Class Index


These are the API classes. See all API packages.

A

AbsListView Base class that can be used to implement virtualized lists of items. 
AbsListView.LayoutParams AbsListView extends LayoutParams to provide a place to hold the view type. 
AbsListView.MultiChoiceModeListener A MultiChoiceModeListener receives events for AbsListView#CHOICE_MODE_MULTIPLE_MODAL
AbsListView.OnScrollListener Interface definition for a callback to be invoked when the list or grid has been scrolled. 
AbsListView.RecyclerListener A RecyclerListener is used to receive a notification whenever a View is placed inside the RecycleBin's scrap heap. 
AbsListView.SelectionBoundsAdjuster The top-level view of a list item can implement this interface to allow itself to modify the bounds of the selection shown for that item. 
AbsoluteLayout This class was deprecated in API level 3. Use FrameLayout, RelativeLayout or a custom layout instead. 
AbsoluteLayout.LayoutParams Per-child layout information associated with AbsoluteLayout. 
AbsoluteSizeSpan A span that changes the size of the text it's attached to. 
AbsSavedState A Parcelable implementation that should be used by inheritance hierarchies to ensure the state of all classes along the chain is saved. 
AbsSeekBar AbsSeekBar extends the capabilities of ProgressBar by adding a draggable thumb. 
AbsSpinner An abstract base class for spinner widgets. 
AbstractAccountAuthenticator Abstract base class for creating AccountAuthenticators. 
AbstractChronology An abstract implementation of a calendar system, used to organize and identify dates. 
AbstractCollection<E> This class provides a skeletal implementation of the Collection interface, to minimize the effort required to implement this interface. 
AbstractCursor This is an abstract cursor class that handles a lot of the common code that all cursors need to deal with and is provided for convenience reasons. 
AbstractCursor.SelfContentObserver Cursors use this class to track changes others make to their URI. 
AbstractExecutorService Provides default implementations of ExecutorService execution methods. 
AbstractInputMethodService AbstractInputMethodService provides a abstract base class for input methods. 
AbstractInputMethodService.AbstractInputMethodImpl Base class for derived classes to implement their InputMethod interface. 
AbstractInputMethodService.AbstractInputMethodSessionImpl Base class for derived classes to implement their InputMethodSession interface. 
AbstractInterruptibleChannel Base implementation class for interruptible channels. 
AbstractList<E> This class provides a skeletal implementation of the List interface to minimize the effort required to implement this interface backed by a "random access" data store (such as an array). 
AbstractMap<K, V> This class provides a skeletal implementation of the Map interface, to minimize the effort required to implement this interface. 
AbstractMap.SimpleEntry<K, V> An Entry maintaining a key and a value. 
AbstractMap.SimpleImmutableEntry<K, V> An unmodifiable Entry maintaining a key and a value. 
AbstractMethodError Thrown when an application tries to call an abstract method. 
AbstractOwnableSynchronizer A synchronizer that may be exclusively owned by a thread. 
AbstractPreferences This class provides a skeletal implementation of the Preferences class, greatly easing the task of implementing it. 
AbstractQueue<E> This class provides skeletal implementations of some Queue operations. 
AbstractQueuedLongSynchronizer A version of AbstractQueuedSynchronizer in which synchronization state is maintained as a long
AbstractQueuedLongSynchronizer.ConditionObject Condition implementation for a AbstractQueuedLongSynchronizer serving as the basis of a Lock implementation. 
AbstractQueuedSynchronizer Provides a framework for implementing blocking locks and related synchronizers (semaphores, events, etc) that rely on first-in-first-out (FIFO) wait queues. 
AbstractQueuedSynchronizer.ConditionObject Condition implementation for a AbstractQueuedSynchronizer serving as the basis of a Lock implementation. 
AbstractSelectableChannel Base implementation class for selectable channels. 
AbstractSelectionKey Base implementation class for selection keys. 
AbstractSelector Base implementation class for selectors. 
AbstractSequentialList<E> This class provides a skeletal implementation of the List interface to minimize the effort required to implement this interface backed by a "sequential access" data store (such as a linked list). 
AbstractSet<E> This class provides a skeletal implementation of the Set interface to minimize the effort required to implement this interface. 
AbstractThreadedSyncAdapter An abstract implementation of a SyncAdapter that spawns a thread to invoke a sync operation. 
AbstractVerifier This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
AbstractWindowedCursor A base class for Cursors that store their data in CursorWindows. 
AccelerateDecelerateInterpolator An interpolator where the rate of change starts and ends slowly but accelerates through the middle. 
AccelerateInterpolator An interpolator where the rate of change starts out slowly and and then accelerates. 
AcceptPendingException Unchecked exception thrown when an attempt is made to initiate an accept operation on a channel and a previous accept operation has not completed. 
AccessControlContext Android doesn't support SecurityManager
AccessControlException

This exception is thrown by the AccessController to indicate that a requested access (to a critical system resource such as the file system or the network) is denied. 

AccessController Android doesn't support SecurityManager
AccessControlProfile A class used to specify access controls. 
AccessControlProfile.Builder A builder for AccessControlProfile
AccessControlProfileId A class used to wrap an access control profile identifiers. 
AccessDeniedException Checked exception thrown when a file system operation is denied, typically due to a file permission or other access check. 
AccessibilityButtonController Controller for the accessibility button within the system's navigation area

This class may be used to query the accessibility button's state and register callbacks for interactions with and state changes to the accessibility button when AccessibilityServiceInfo#FLAG_REQUEST_ACCESSIBILITY_BUTTON is set. 

AccessibilityButtonController.AccessibilityButtonCallback Callback for interaction with and changes to state of the accessibility button within the system's navigation area. 
AccessibilityEvent

This class represents accessibility events that are sent by the system when something notable happens in the user interface. 

AccessibilityEventSource This interface is implemented by classes source of AccessibilityEvents. 
AccessibilityGestureEvent This class describes the gesture event including gesture id and which display it happens on. 
AccessibilityManager System level service that serves as an event dispatch for AccessibilityEvents, and provides facilities for querying the accessibility state of the system. 
AccessibilityManager.AccessibilityServicesStateChangeListener Listener for changes to the state of accessibility services. 
AccessibilityManager.AccessibilityStateChangeListener Listener for the system accessibility state. 
AccessibilityManager.AudioDescriptionRequestedChangeListener Listener for the audio description by default state. 
AccessibilityManager.TouchExplorationStateChangeListener Listener for the system touch exploration state. 
AccessibilityNodeInfo This class represents a node of the window content as well as actions that can be requested from its source. 
AccessibilityNodeInfo.AccessibilityAction A class defining an action that can be performed on an AccessibilityNodeInfo
AccessibilityNodeInfo.CollectionInfo Class with information if a node is a collection. 
AccessibilityNodeInfo.CollectionInfo.Builder The builder for CollectionInfo. 
AccessibilityNodeInfo.CollectionItemInfo Class with information if a node is a collection item. 
AccessibilityNodeInfo.CollectionItemInfo.Builder Builder for creating CollectionItemInfo objects. 
AccessibilityNodeInfo.ExtraRenderingInfo Class with information of a view useful to evaluate accessibility needs. 
AccessibilityNodeInfo.RangeInfo Class with information if a node is a range. 
AccessibilityNodeInfo.TouchDelegateInfo Class with information of touch delegated views and regions from TouchDelegate for the AccessibilityNodeInfo
AccessibilityNodeProvider This class is the contract a client should implement to enable support of a virtual view hierarchy rooted at a given view for accessibility purposes. 
AccessibilityRecord Represents a record in an AccessibilityEvent and contains information about state change of its source View
AccessibilityRequestPreparer Object responsible to ensuring that a View is prepared to meet a synchronous request for accessibility data. 
AccessibilityService Accessibility services should only be used to assist users with disabilities in using Android devices and apps. 
AccessibilityService.GestureResultCallback Class used to report status of dispatched gestures 
AccessibilityService.MagnificationController Used to control and query the state of display magnification. 
AccessibilityService.MagnificationController.OnMagnificationChangedListener Listener for changes in the state of magnification. 
AccessibilityService.ScreenshotResult Can be used to construct a bitmap of the screenshot or any other operations for AccessibilityService#takeScreenshot API. 
AccessibilityService.SoftKeyboardController Used to control, query, and listen for changes to the soft keyboard show mode. 
AccessibilityService.SoftKeyboardController.OnShowModeChangedListener Listener for changes in the soft keyboard show mode. 
AccessibilityService.TakeScreenshotCallback Interface used to report status of taking screenshot. 
AccessibilityServiceInfo This class describes an AccessibilityService
AccessibilityWindowInfo This class represents a state snapshot of a window for accessibility purposes. 
AccessibleObject The AccessibleObject class is the base class for Field, Method and Constructor objects. 
AccessMode Defines access modes used to test the accessibility of a file. 
AccessNetworkConstants Contains access network related constants. 
AccessNetworkConstants.AccessNetworkType  
AccessNetworkConstants.EutranBand Frequency bands for EUTRAN. 
AccessNetworkConstants.GeranBand Frequency bands for GERAN. 
AccessNetworkConstants.NgranBands Frequency bands for NGRAN https://www.etsi.org/deliver/etsi_ts/138100_138199/13810101/15.08.02_60/ts_13810101v150802p.pdf https://www.etsi.org/deliver/etsi_ts/138100_138199/13810102/15.08.00_60/ts_13810102v150800p.pdf 
AccessNetworkConstants.UtranBand Frequency bands for UTRAN. 
Account Value type that represents an Account in the AccountManager
AccountAuthenticatorActivity This class was deprecated in API level 30. Applications should extend Activity themselves. This class is not compatible with AppCompat, and the functionality it provides is not complex. 
AccountAuthenticatorResponse Object used to communicate responses back to the AccountManager 
AccountManager This class provides access to a centralized registry of the user's online accounts. 
AccountManagerCallback<V>  
AccountManagerFuture<V> A AccountManagerFuture represents the result of an asynchronous AccountManager call. 
AccountsException  
Acl This interface was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
AclEntry An entry in an access control list (ACL). 
AclEntry This interface was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
AclEntry.Builder A builder of AclEntry objects. 
AclEntryFlag Defines the flags for used by the flags component of an ACL entry
AclEntryPermission Defines the permissions for use with the permissions component of an ACL entry
AclEntryType A typesafe enumeration of the access control entry types. 
AclFileAttributeView A file attribute view that supports reading or updating a file's Access Control Lists (ACL) or file owner attributes. 
AclNotFoundException This class was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
AcousticEchoCanceler Acoustic Echo Canceler (AEC). 
Action An action defined by the provider that intents into the provider's app for specific user actions. 
ActionBar A primary toolbar within the activity that may display the activity title, application-level navigation affordances, and other interactive items. 
ActionBar.LayoutParams Per-child layout information associated with action bar custom views. 
ActionBar.OnMenuVisibilityListener Listener for receiving events when action bar menus are shown or hidden. 
ActionBar.OnNavigationListener This interface was deprecated in API level 21. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. 
ActionBar.Tab This class was deprecated in API level 21. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. 
ActionBar.TabListener This interface was deprecated in API level 21. Action bar navigation modes are deprecated and not supported by inline toolbar action bars. Consider using other common navigation patterns instead. 
ActionMenuView ActionMenuView is a presentation of a series of menu options as a View. 
ActionMenuView.LayoutParams  
ActionMenuView.OnMenuItemClickListener Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners. 
ActionMode Represents a contextual mode of the user interface. 
ActionMode.Callback Callback interface for action modes. 
ActionMode.Callback2 Extension of ActionMode.Callback to provide content rect information. 
ActionProvider An ActionProvider defines rich menu interaction in a single component. 
ActionProvider.VisibilityListener Listens to changes in visibility as reported by ActionProvider#refreshVisibility()
ActiveCaloriesBurnedRecord Captures the estimated active energy burned by the user (in kilocalories), excluding basal metabolic rate (BMR). 
ActiveCaloriesBurnedRecord.Builder Builder class for ActiveCaloriesBurnedRecord 
Activity An activity is a single, focused thing that the user can do. 
Activity.ScreenCaptureCallback Interface for observing screen captures of an Activity
ActivityGroup This class was deprecated in API level 13. Use the new Fragment and FragmentManager APIs instead; these are also available on older platforms through the Android compatibility package. 
ActivityInfo Information you can retrieve about a particular application activity or receiver. 
ActivityInfo.WindowLayout Contains information about position and size of the activity on the display. 
ActivityInstrumentationTestCase<T extends Activity> This class was deprecated in API level 3. new tests should be written using ActivityInstrumentationTestCase2, which provides more options for configuring the Activity under test 
ActivityInstrumentationTestCase2<T extends Activity> This class was deprecated in API level 24. Use ActivityTestRule instead. New tests should be written using the Android Testing Support Library. 
ActivityManager

This class gives information about, and interacts with, activities, services, and the containing process. 

ActivityManager.AppTask The AppTask allows you to manage your own application's tasks. 
ActivityManager.MemoryInfo Information you can retrieve about the available memory through ActivityManager#getMemoryInfo
ActivityManager.ProcessErrorStateInfo Information you can retrieve about any processes that are in an error condition. 
ActivityManager.RecentTaskInfo Information you can retrieve about tasks that the user has most recently started or visited. 
ActivityManager.RunningAppProcessInfo Information you can retrieve about a running process. 
ActivityManager.RunningServiceInfo Information you can retrieve about a particular Service that is currently running in the system. 
ActivityManager.RunningTaskInfo Information you can retrieve about a particular task that is currently "running" in the system. 
ActivityManager.TaskDescription Information you can set and retrieve about the current activity within the recent task list. 
ActivityManager.TaskDescription.Builder Provides a convenient way to set the fields of a TaskDescription when creating a new instance. 
ActivityNotFoundException This exception is thrown when a call to Context#startActivity or one of its variants fails because an Activity can not be found to execute the given Intent. 
ActivityOptions Helper class for building an options Bundle that can be used with Context.startActivity(Intent, Bundle) and related methods. 
ActivityTestCase This class was deprecated in API level 24. New tests should be written using the Android Testing Support Library. 
ActivityUnitTestCase<T extends Activity> This class was deprecated in API level 24. Write Local Unit Tests instead. 
Adapter An Adapter object acts as a bridge between an AdapterView and the underlying data for that view. 
AdapterView<T extends Adapter> An AdapterView is a view whose children are determined by an Adapter
AdapterView.AdapterContextMenuInfo Extra menu information provided to the View.OnCreateContextMenuListener.onCreateContextMenu(ContextMenu, View, ContextMenuInfo) callback when a context menu is brought up for this AdapterView. 
AdapterView.OnItemClickListener Interface definition for a callback to be invoked when an item in this AdapterView has been clicked. 
AdapterView.OnItemLongClickListener Interface definition for a callback to be invoked when an item in this view has been clicked and held. 
AdapterView.OnItemSelectedListener Interface definition for a callback to be invoked when an item in this view has been selected. 
AdapterViewAnimator Base class for a AdapterView that will perform animations when switching between its views. 
AdapterViewFlipper Simple ViewAnimator that will animate between two or more views that have been added to it. 
AdaptiveIconDrawable

This class can also be created via XML inflation using <adaptive-icon> tag in addition to dynamic creation. 

AdBuffer Buffer for advertisement data. 
AddAdSelectionFromOutcomesOverrideRequest This POJO represents the TestAdSelectionManager.overrideAdSelectionFromOutcomesConfigRemoteInfo(AddAdSelectionFromOutcomesOverrideRequest, Executor, OutcomeReceiver) ( AddAdSelectionOverrideRequest, Executor, OutcomeReceiver)} request

It contains, a AdSelectionFromOutcomesConfig which will serve as the identifier for the specific override, a String selectionLogicJs and String selectionSignals field representing the override value 

AddAdSelectionOverrideRequest This POJO represents the TestAdSelectionManager.overrideAdSelectionConfigRemoteInfo(android.adservices.adselection.AddAdSelectionOverrideRequest, java.util.concurrent.Executor, android.os.OutcomeReceiver) request

It contains, a AdSelectionConfig which will serve as the identifier for the specific override, a String decisionLogicJs and String trustedScoringSignals field representing the override value 

AdData Represents data specific to an ad that is necessary for ad selection and rendering. 
AdData.Builder Builder for AdData objects. 
AddCustomAudienceOverrideRequest This POJO represents the TestCustomAudienceManager.overrideCustomAudienceRemoteInfo(android.adservices.customaudience.AddCustomAudienceOverrideRequest, java.util.concurrent.Executor, android.os.OutcomeReceiver) request. 
AddCustomAudienceOverrideRequest.Builder Builder for AddCustomAudienceOverrideRequest objects. 
AdditionalContentContract Specifies constants used by Chooser when interacting with the additional content provider, see Intent.EXTRA_CHOOSER_ADDITIONAL_CONTENT_URI
AdditionalContentContract.Columns  
AdditionalContentContract.CursorExtraKeys Constants for Cursor.getExtras() keys. 
AdditionalContentContract.MethodNames Constants for method names used with ContentResolver.call(Uri, String, String, Bundle) method. 
Address A class representing an Address, that is, a set of Strings describing a location. 
AdFilters A container class for filters which are associated with an ad. 
AdFilters.Builder Builder for creating AdFilters objects. 
AdId A unique, user-resettable, device-wide, per-profile ID for advertising. 
AdIdManager AdId Manager provides APIs for app and ad-SDKs to access advertising ID. 
Adler32 A class that can be used to compute the Adler-32 checksum of a data stream. 
AdRequest An advertisement request which can be sent to TV input to request AD operations. 
AdResponse An advertisement response which can be sent to TV interactive App service to inform AD status. 
AdSelectionConfig Contains the configuration of the ad selection process. 
AdSelectionConfig.Builder Builder for AdSelectionConfig object. 
AdSelectionFromOutcomesConfig Contains the configuration of the ad selection process that select a winner from a given list of ad selection ids. 
AdSelectionFromOutcomesConfig.Builder Builder for AdSelectionFromOutcomesConfig objects. 
AdSelectionManager AdSelection Manager provides APIs for app and ad-SDKs to run ad selection processes as well as report impressions. 
AdSelectionOutcome This class represents a field in the OutcomeReceiver, which is an input to the AdSelectionManager.selectAds(AdSelectionConfig, Executor, OutcomeReceiver) in the AdSelectionManager
AdSelectionOutcome.Builder Builder for AdSelectionOutcome objects. 
AdSelectionSignals This class holds JSON that will be passed into a JavaScript function during ad selection. 
AdServicesException Exception thrown by AdServices. 
AdServicesOutcomeReceiver<R, E extends Throwable> Callback interface intended for use when an asynchronous operation may result in a failure. 
AdServicesPermissions Permissions used by the AdServices APIs. 
AdServicesState This class specifies the state of the APIs exposed by AdServicesApi apk. 
AdTechIdentifier An Identifier representing an ad buyer or seller. 
Advanceable This interface can be implemented by any collection-type view which has a notion of progressing through its set of children. 
AdvertiseCallback Bluetooth LE advertising callbacks, used to deliver advertising operation status. 
AdvertiseData Advertise data packet container for Bluetooth LE advertising. 
AdvertiseData.Builder Builder for AdvertiseData
AdvertiseSettings The AdvertiseSettings provide a way to adjust advertising preferences for each Bluetooth LE advertisement instance. 
AdvertiseSettings.Builder Builder class for AdvertiseSettings
AdvertisingSet This class provides a way to control single Bluetooth LE advertising instance. 
AdvertisingSetCallback Bluetooth LE advertising set callbacks, used to deliver advertising operation status. 
AdvertisingSetParameters The AdvertisingSetParameters provide a way to adjust advertising preferences for each Bluetooth LE advertising set. 
AdvertisingSetParameters.Builder Builder class for AdvertisingSetParameters
AdWithBid Represents an ad and its corresponding bid value after the bid generation step in the ad selection process. 
AEADBadTagException This exception is thrown when a Cipher operating in an AEAD mode (such as GCM/CCM) is unable to verify the supplied authentication tag. 
AggregateRecordsGroupedByDurationResponse<T> Class to represent the response from HealthConnectManager#aggregateGroupByDuration 
AggregateRecordsGroupedByPeriodResponse<T> Class to represent the response from HealthConnectManager#aggregateGroupByPeriod 
AggregateRecordsRequest<T> A class to create requests for HealthConnectManager#aggregate 
AggregateRecordsRequest.Builder<T>  
AggregateRecordsResponse<T> A class representing response for HealthConnectManager#aggregate 
AggregationType<T> Class to represent aggregation types in Record classes. 
AitInfo AIT (Application Information Table) info. 
AlarmClock The AlarmClock provider contains an Intent action and extras that can be used to start an Activity to set a new alarm or timer in an alarm clock application. 
AlarmManager This class provides access to the system alarm services. 
AlarmManager.AlarmClockInfo An immutable description of a scheduled "alarm clock" event. 
AlarmManager.OnAlarmListener Direct-notification alarms: the requester must be running continuously from the time the alarm is set to the time it is delivered, or delivery will fail. 
AlertDialog A subclass of Dialog that can display one, two or three buttons. 
AlertDialog.Builder  
AlgorithmConstraints This interface specifies constraints for cryptographic algorithms, keys (key sizes), and other algorithm parameters. 
AlgorithmParameterGenerator The AlgorithmParameterGenerator class is used to generate a set of parameters to be used with a certain algorithm. 
AlgorithmParameterGeneratorSpi This class defines the Service Provider Interface (SPI) for the AlgorithmParameterGenerator class, which is used to generate a set of parameters to be used with a certain algorithm. 
AlgorithmParameters This class is used as an opaque representation of cryptographic parameters. 
AlgorithmParameterSpec A (transparent) specification of cryptographic parameters. 
AlgorithmParametersSpi This class defines the Service Provider Interface (SPI) for the AlgorithmParameters class, which is used to manage algorithm parameters. 
AliasActivity This class was deprecated in API level 30. Use <activity-alias> or subclass Activity directly. 
AlignmentSpan Span that allows defining the alignment of text at the paragraph level. 
AlignmentSpan.Standard Default implementation of the AlignmentSpan
Allocation This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Allocation.MipmapControl Controls mipmap behavior when using the bitmap creation and update functions. 
Allocation.OnBufferAvailableListener Interface to handle notification when new buffers are available via Allocation.USAGE_IO_INPUT
AllocationAdapter This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
AllowAllHostnameVerifier This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
AllPermission Android doesn't support SecurityManager
AlphaAnimation An animation that controls the alpha level of an object. 
AlphabeticIndex<V> AlphabeticIndex supports the creation of a UI index appropriate for a given language. 
AlphabeticIndex.Bucket<V> An index "bucket" with a label string and type. 
AlphabeticIndex.Bucket.LabelType Type of the label 
AlphabeticIndex.ImmutableIndex<V> Immutable, thread-safe version of AlphabeticIndex
AlphabeticIndex.Record<V> A (name, data) pair, to be sorted by name into one of the index buckets. 
AlphabetIndexer A helper class for adapters that implement the SectionIndexer interface. 
AlreadyBoundException Unchecked exception thrown when an attempt is made to bind the socket a network oriented channel that is already bound. 
AlreadyConnectedException Unchecked exception thrown when an attempt is made to connect a SocketChannel that is already connected. 
AlreadyPersonalizedException Thrown if trying to create a credential which already exists. 
AlteredCharSequence This class was deprecated in API level 30. The functionality this class offers is easily implemented outside the framework. 
AlternativeSpan List of alternative hypotheses for a specific span of a speech recognition result string. 
AlternativeSpans List of AlternativeSpan for a specific speech recognition result. 
AltitudeConverter Converts altitudes reported above the World Geodetic System 1984 (WGS84) reference ellipsoid into ones above Mean Sea Level. 
AnalogClock This class was deprecated in API level 23. This widget is no longer supported; except for RemoteViews use cases like app widgets. 
AndroidCharacter This class was deprecated in API level 26. Use various methods from UCharacter, instead. 
AndroidException Base class for all checked exceptions thrown by the Android frameworks. 
AndroidRuntimeException Base class for all unchecked exceptions thrown by the Android frameworks. 
AndroidTestCase This class was deprecated in API level 24. Use InstrumentationRegistry instead. New tests should be written using the Android Testing Support Library. 
AndroidTestRunner This class was deprecated in API level 24. Use AndroidJUnitRunner instead. New tests should be written using the Android Testing Support Library. 
Animatable Interface that drawables supporting animations should implement. 
Animatable2 Abstract class that drawables supporting animations and callbacks should extend. 
Animatable2.AnimationCallback  
AnimatedImageDrawable Drawable for drawing animated images (like GIF). 
AnimatedStateListDrawable Drawable containing a set of Drawable keyframes where the currently displayed keyframe is chosen based on the current state set. 
AnimatedVectorDrawable This class animates properties of a VectorDrawable with animations defined using ObjectAnimator or AnimatorSet
Animation Abstraction for an Animation that can be applied to Views, Surfaces, or other objects. 
Animation.AnimationListener

An animation listener receives notifications from an animation. 

Animation.Description Utility class to parse a string description of a size. 
AnimationDrawable An object used to create frame-by-frame animations, defined by a series of Drawable objects, which can be used as a View object's background. 
AnimationSet Represents a group of Animations that should be played together. 
AnimationUtils Defines common utilities for working with animations. 
Animator This is the superclass for classes which provide basic support for animations which can be started, ended, and have AnimatorListeners added to them. 
Animator.AnimatorListener

An animation listener receives notifications from an animation. 

Animator.AnimatorPauseListener A pause listener receives notifications from an animation when the animation is paused or resumed
AnimatorInflater This class is used to instantiate animator XML files into Animator objects. 
AnimatorListenerAdapter This adapter class provides empty implementations of the methods from Animator.AnimatorListener
AnimatorSet This class plays a set of Animator objects in the specified order. 
AnimatorSet.Builder The Builder object is a utility class to facilitate adding animations to a AnimatorSet along with the relationships between the various animations. 
AnnotatedElement Represents an annotated element of the program currently running in this VM. 
Annotation Annotations are simple key-value pairs that are preserved across TextView save/restore cycles and can be used to keep application-specific data that needs to be maintained for regions of text. 
Annotation The common interface extended by all annotation interfaces. 
Annotation An Annotation object is used as a wrapper for a text attribute value if the attribute has annotation characteristics. 
AnnotationFormatError Thrown when the annotation parser attempts to read an annotation from a class file and determines that the annotation is malformed. 
AnnotationTypeMismatchException Thrown to indicate that a program has attempted to access an element of an annotation whose type has changed after the annotation was compiled (or serialized). 
AnticipateInterpolator An interpolator where the change starts backward then flings forward. 
AnticipateOvershootInterpolator An interpolator where the change starts backward then flings forward and overshoots the target value and finally goes back to the final value. 
ApkChecksum A typed checksum of an APK. 
ApnSetting An Access Point Name (APN) configuration for a carrier data connection. 
ApnSetting.Builder Provides a convenient way to set the fields of a ApnSetting when creating a new instance. 
AppComponentFactory Interface used to control the instantiation of manifest elements. 
Appendable An object to which char sequences and values can be appended. 
AppInfo Information about apps. 
AppInfo Application Info class containing details about a given application 
AppInstallFilters A container for the ad filters that are based on app install state. 
AppInstallFilters.Builder Builder for creating AppInstallFilters objects. 
Application Base class for maintaining global application state. 
Application.ActivityLifecycleCallbacks  
Application.OnProvideAssistDataListener Callback interface for use with Application#registerOnProvideAssistDataListener and Application#unregisterOnProvideAssistDataListener
ApplicationErrorReport Describes an application error. 
ApplicationErrorReport.AnrInfo Describes an application not responding error. 
ApplicationErrorReport.BatteryInfo Describes a battery usage report. 
ApplicationErrorReport.CrashInfo Describes an application crash. 
ApplicationErrorReport.RunningServiceInfo Describes a running service report. 
ApplicationExitInfo Describes the information of an application process's death. 
ApplicationInfo Information you can retrieve about a particular application. 
ApplicationInfo.DisplayNameComparator  
ApplicationMediaCapabilities ApplicationMediaCapabilities is an immutable class that encapsulates an application's capabilities for handling newer video codec format and media features. 
ApplicationMediaCapabilities.Builder Builder class for ApplicationMediaCapabilities objects. 
ApplicationRuntime Provides APIs to retrieve the information about the application loaded in the current runtime. 
ApplicationStartInfo Describes information related to an application process's startup. 
ApplicationTestCase<T extends Application> This class was deprecated in API level 24. Use InstrumentationRegistry instead. New tests should be written using the Android Testing Support Library. 
AppLinkInfo App link information used by TV interactive app to launch Android apps. 
AppOpsManager App-ops are used for two purposes: Access control and tracking. 
AppOpsManager.OnOpActiveChangedListener Callback for notification of changes to operation active state. 
AppOpsManager.OnOpChangedListener Callback for notification of changes to operation state. 
AppOpsManager.OnOpNotedCallback Callback an app can set to monitor the app-ops the system has tracked for it. 
AppOwnedSdkSandboxInterface Represents a channel for an SDK in the sandbox process to interact with the app. 
AppSearchBatchResult<KeyType, ValueType> Provides results for AppSearch batch operations which encompass multiple documents. 
AppSearchBatchResult.Builder<KeyType, ValueType> Builder for AppSearchBatchResult objects. 
AppSearchException An exception thrown by AppSearchSession or a subcomponent. 
AppSearchManager Provides access to the centralized AppSearch index maintained by the system. 
AppSearchManager.SearchContext Contains information about how to create the search session. 
AppSearchManager.SearchContext.Builder Builder for SearchContext objects. 
AppSearchResult<ValueType> Information about the success or failure of an AppSearch call. 
AppSearchSchema The AppSearch Schema for a particular type of document. 
AppSearchSchema.BooleanPropertyConfig Configuration for a property containing a boolean. 
AppSearchSchema.BooleanPropertyConfig.Builder Builder for BooleanPropertyConfig
AppSearchSchema.Builder Builder for objects
AppSearchSchema.BytesPropertyConfig Configuration for a property containing a byte array. 
AppSearchSchema.BytesPropertyConfig.Builder Builder for BytesPropertyConfig
AppSearchSchema.DocumentPropertyConfig Configuration for a property containing another Document. 
AppSearchSchema.DocumentPropertyConfig.Builder Builder for DocumentPropertyConfig
AppSearchSchema.DoublePropertyConfig Configuration for a property containing a double-precision decimal number. 
AppSearchSchema.DoublePropertyConfig.Builder Builder for DoublePropertyConfig
AppSearchSchema.LongPropertyConfig Configuration for a property containing a 64-bit integer. 
AppSearchSchema.LongPropertyConfig.Builder Builder for LongPropertyConfig
AppSearchSchema.PropertyConfig Common configuration for a single property (field) in a Document. 
AppSearchSchema.StringPropertyConfig Configuration for a property of type String in a Document. 
AppSearchSchema.StringPropertyConfig.Builder Builder for StringPropertyConfig
AppSearchSession Provides a connection to a single AppSearch database. 
AppSetId A unique, per-device, per developer-account user-resettable ID for non-monetizing advertising usecases. 
AppSetIdManager AppSetIdManager provides APIs for app and ad-SDKs to access appSetId for non-monetizing purpose. 
AppUriAuthenticationPolicy The app-URI authentication policy is set by the credential management app. 
AppUriAuthenticationPolicy.Builder Builder class for AppUriAuthenticationPolicy objects. 
AppWidgetHost AppWidgetHost provides the interaction with the AppWidget service for apps, like the home screen, that want to embed AppWidgets in their UI. 
AppWidgetHostView Provides the glue to show AppWidget views. 
AppWidgetManager Updates AppWidget state; gets information about installed AppWidget providers and other AppWidget related state. 
AppWidgetProvider A convenience class to aid in implementing an AppWidget provider. 
AppWidgetProviderInfo Describes the meta data for an installed AppWidget provider. 
ArchivedActivityInfo Contains fields required to show archived package in Launcher. 
ArchivedPackageInfo Contains fields required for archived package installation, i.e. 
ArcMotion A PathMotion that generates a curved path along an arc on an imaginary circle containing the two points. 
ArcShape Creates an arc shape. 
ArgbEvaluator This evaluator can be used to perform type interpolation between integer values that represent ARGB colors. 
ArithmeticException Thrown when an exceptional arithmetic condition has occurred. 
Array The Array class provides static methods to dynamically create and access Java arrays. 
Array The mapping in the Java programming language for the SQL type ARRAY
ArrayAdapter<T> You can use this adapter to provide views for an AdapterView, Returns a view for each object in a collection of data objects you provide, and can be used with list-based user interface widgets such as ListView or Spinner
ArrayBlockingQueue<E> A bounded blocking queue backed by an array. 
ArrayDeque<E> Resizable-array implementation of the Deque interface. 
ArrayIndexOutOfBoundsException Thrown to indicate that an array has been accessed with an illegal index. 
ArrayList<E> Resizable-array implementation of the List interface. 
ArrayMap<K, V> ArrayMap is a generic key->value mapping data structure that is designed to be more memory efficient than a traditional HashMap
Arrays This class contains various methods for manipulating arrays (such as sorting and searching). 
ArraySet<E> ArraySet is a generic set data structure that is designed to be more memory efficient than a traditional HashSet
ArrayStoreException Thrown to indicate that an attempt has been made to store the wrong type of object into an array of objects. 
ArrowKeyMovementMethod A movement method that provides cursor movement and selection. 
AssertionError Thrown to indicate that an assertion has failed. 
AssertionFailedError This class was deprecated in API level 16. use junit.framework.AssertionFailedError 
AssetFileDescriptor File descriptor of an entry in the AssetManager. 
AssetFileDescriptor.AutoCloseInputStream An InputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescriptor.close() for you when the stream is closed. 
AssetFileDescriptor.AutoCloseOutputStream An OutputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescriptor.close() for you when the stream is closed. 
AssetManager Provides access to an application's raw asset files; see Resources for the way most applications will want to retrieve their resource data. 
AssetManager.AssetInputStream  
AssetsProvider Provides callbacks that allow for the value of a file-based resources or assets of a ResourcesProvider to be specified or overridden. 
AssistContent Holds information about the content an application is viewing, to hand to an assistant at the user's request. 
AssistStructure

This API automatically creates assist data from the platform's implementation of assist and autofill. 

AssistStructure.ViewNode Describes a single view in the assist data. 
AssistStructure.WindowNode Describes a window in the assist data. 
AssociatedDevice Container for device info from an association that is not self-managed. 
AssociationInfo Details for a specific "association" that has been established between an app and companion device. 
AssociationRequest A request for the user to select a companion device to associate with. 
AssociationRequest.Builder A builder for AssociationRequest 
AsynchronousByteChannel An asynchronous channel that can read and write bytes. 
AsynchronousChannel A channel that supports asynchronous I/O operations. 
AsynchronousChannelGroup A grouping of asynchronous channels for the purpose of resource sharing. 
AsynchronousChannelProvider Service-provider class for asynchronous channels. 
AsynchronousCloseException Checked exception received by a thread when another thread closes the channel or the part of the channel upon which it is blocked in an I/O operation. 
AsynchronousFileChannel An asynchronous channel for reading, writing, and manipulating a file. 
AsynchronousServerSocketChannel An asynchronous channel for stream-oriented listening sockets. 
AsynchronousSocketChannel An asynchronous channel for stream-oriented connecting sockets. 
AsyncNotedAppOp When an app-op is noted and the app the app-op is noted for has a AppOpsManager.OnOpNotedCallback registered the note-event needs to be delivered to the callback. 
AsyncPlayer Plays a series of audio URIs, but does all the hard work on another thread so that any slowness with preparing or loading doesn't block the calling thread. 
AsyncQueryHandler A helper class to help make handling asynchronous ContentResolver queries easier. 
AsyncQueryHandler.WorkerArgs  
AsyncQueryHandler.WorkerHandler  
AsyncTask<Params, Progress, Result> This class was deprecated in API level 30. Use the standard java.util.concurrent or Kotlin concurrency utilities instead. 
AsyncTask.Status Indicates the current status of the task. 
AsyncTaskLoader<D> This class was deprecated in API level 28. Use the Support Library AsyncTaskLoader 
AtomicBoolean A boolean value that may be updated atomically. 
AtomicFile Helper class for performing atomic operations on a file by writing to a new file and renaming it into the place of the original file after the write has successfully completed. 
AtomicInteger An int value that may be updated atomically. 
AtomicIntegerArray An int array in which elements may be updated atomically. 
AtomicIntegerFieldUpdater<T> A reflection-based utility that enables atomic updates to designated volatile int fields of designated classes. 
AtomicLong A long value that may be updated atomically. 
AtomicLongArray A long array in which elements may be updated atomically. 
AtomicLongFieldUpdater<T> A reflection-based utility that enables atomic updates to designated volatile long fields of designated classes. 
AtomicMarkableReference<V> An AtomicMarkableReference maintains an object reference along with a mark bit, that can be updated atomically. 
AtomicMoveNotSupportedException Checked exception thrown when a file cannot be moved as an atomic file system operation. 
AtomicReference<V> An object reference that may be updated atomically. 
AtomicReferenceArray<E> An array of object references in which elements may be updated atomically. 
AtomicReferenceFieldUpdater<T, V> A reflection-based utility that enables atomic updates to designated volatile reference fields of designated classes. 
AtomicStampedReference<V> An AtomicStampedReference maintains an object reference along with an integer "stamp", that can be updated atomically. 
AttachCallback Base class for Aware attach callbacks. 
AttachedSurfaceControl Provides an interface to the root-Surface of a View Hierarchy or Window. 
AttachedSurfaceControl.OnBufferTransformHintChangedListener Buffer transform hint change listener. 
AttestedKeyPair The AttestedKeyPair class contains a KeyPair instance of keys generated by Keystore and owned by KeyChain, as well as an attestation record for the key. 
Attr The Attr interface represents an attribute in an Element object. 
AttributedCharacterIterator An AttributedCharacterIterator allows iteration through both text and related attribute information. 
AttributedCharacterIterator.Attribute Defines attribute keys that are used to identify text attributes. 
AttributedString An AttributedString holds text and related attribute information. 
AttributeList This interface was deprecated in API level 9. This interface has been replaced by the SAX2 Attributes interface, which includes Namespace support. 
AttributeListImpl This class was deprecated in API level 9. This class implements a deprecated interface, AttributeList; that interface has been replaced by Attributes, which is implemented in the AttributesImpl helper class. 
Attributes The Attributes class maps Manifest attribute names to associated string values. 
Attributes Interface for a list of XML attributes. 
Attributes.Name The Attributes.Name class represents an attribute name stored in this Map. 
Attributes2 SAX2 extension to augment the per-attribute information provided though Attributes
Attributes2Impl SAX2 extension helper for additional Attributes information, implementing the Attributes2 interface. 
AttributeSet A collection of attributes, as found associated with a tag in an XML document. 
AttributesImpl Default implementation of the Attributes interface. 
AttributeView An object that provides a read-only or updatable view of non-opaque values associated with an object in a filesystem. 
Attribution Information about an attribution declared by a package. 
AttributionSource This class represents a source to which access to permission protected data should be attributed. 
AttributionSource.Builder A builder for AttributionSource 
AudioAttributes A class to encapsulate a collection of attributes describing information about an audio stream. 
AudioAttributes.Builder Builder class for AudioAttributes objects. 
AudioCodec This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
AudioDescriptor The AudioDescriptor contains the information to describe the audio playback/capture capabilities. 
AudioDeviceCallback AudioDeviceCallback defines the mechanism by which applications can receive notifications of audio device connection and disconnection events. 
AudioDeviceInfo Provides information about an audio device. 
AudioEffect AudioEffect is the base class for controlling audio effects provided by the android audio framework. 
AudioEffect.Descriptor The effect descriptor contains information on a particular effect implemented in the audio framework:
  • type: UUID identifying the effect type. 
AudioEffect.OnControlStatusChangeListener The OnControlStatusChangeListener interface defines a method called by the AudioEffect when control of the effect engine is gained or lost by the application 
AudioEffect.OnEnableStatusChangeListener The OnEnableStatusChangeListener interface defines a method called by the AudioEffect when the enabled state of the effect engine was changed by the controlling application. 
AudioFocusRequest A class to encapsulate information about an audio focus request. 
AudioFocusRequest.Builder Builder class for AudioFocusRequest objects. 
AudioFormat The AudioFormat class is used to access a number of audio format and channel configuration constants. 
AudioFormat.Builder Builder class for AudioFormat objects. 
AudioGroup This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
AudioManager AudioManager provides access to volume and ringer mode control. 
AudioManager.AudioPlaybackCallback Interface for receiving update notifications about the playback activity on the system. 
AudioManager.AudioRecordingCallback Interface for receiving update notifications about the recording configuration. 
AudioManager.OnAudioFocusChangeListener Interface definition for a callback to be invoked when the audio focus of the system is updated. 
AudioManager.OnCommunicationDeviceChangedListener Listener registered by client to be notified upon communication audio device change. 
AudioManager.OnModeChangedListener Interface definition of a callback that is notified when the audio mode changes 
AudioManager.OnPreferredMixerAttributesChangedListener Interface to be notified of changes in the preferred mixer attributes. 
AudioMetadata AudioMetadata class is used to manage typed key-value pairs for configuration and capability requests within the Audio Framework. 
AudioMetadata.Format A container class for AudioMetadata Format keys. 
AudioMetadata.Key<T> Key interface for the AudioMetadata map. 
AudioMetadataMap AudioMetadataMap is a writeable Map-style interface of AudioMetadata.Key value pairs. 
AudioMetadataReadMap A read only Map-style interface of AudioMetadata.Key value pairs used for AudioMetadata
AudioMixerAttributes Class to represent the attributes of the audio mixer: its format, which represents by an AudioFormat object and mixer behavior. 
AudioMixerAttributes.Builder Builder class for AudioMixerAttributes objects. 
AudioPlaybackCaptureConfiguration Configuration for capturing audio played by other apps. 
AudioPlaybackCaptureConfiguration.Builder Builder for creating AudioPlaybackCaptureConfiguration instances. 
AudioPlaybackConfiguration The AudioPlaybackConfiguration class collects the information describing an audio playback session. 
AudioPresentation The AudioPresentation class encapsulates the information that describes an audio presentation which is available in next generation audio content. 
AudioPresentation.Builder A builder class for creating AudioPresentation objects. 
AudioProfile An AudioProfile is specific to an audio format and lists supported sampling rates and channel masks for that format. 
AudioRecord The AudioRecord class manages the audio resources for Java applications to record audio from the audio input hardware of the platform. 
AudioRecord.Builder Builder class for AudioRecord objects. 
AudioRecord.MetricsConstants  
AudioRecord.OnRecordPositionUpdateListener Interface definition for a callback to be invoked when an AudioRecord has reached a notification marker set by AudioRecord#setNotificationMarkerPosition(int) or for periodic updates on the progress of the record head, as set by AudioRecord#setPositionNotificationPeriod(int)
AudioRecord.OnRoutingChangedListener This interface was deprecated in API level 24. users should switch to the general purpose AudioRouting.OnRoutingChangedListener class instead. 
AudioRecordingConfiguration The AudioRecordingConfiguration class collects the information describing an audio recording session. 
AudioRecordingMonitor AudioRecordingMonitor defines an interface implemented by AudioRecord and MediaRecorder allowing applications to install a callback and be notified of changes in the capture path while recoding is active. 
AudioRouting AudioRouting defines an interface for controlling routing and routing notifications in AudioTrack and AudioRecord objects. 
AudioRouting.OnRoutingChangedListener Defines the interface by which applications can receive notifications of routing changes for the associated AudioRouting
AudioStream This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
AudioTimestamp Structure that groups a position in frame units relative to an assumed audio stream, together with the estimated time when that frame enters or leaves the audio processing pipeline on that device. 
AudioTrack The AudioTrack class manages and plays a single audio resource for Java applications. 
AudioTrack.Builder Builder class for AudioTrack objects. 
AudioTrack.MetricsConstants  
AudioTrack.OnCodecFormatChangedListener Interface definition for a listener for codec format changes. 
AudioTrack.OnPlaybackPositionUpdateListener Interface definition for a callback to be invoked when the playback head position of an AudioTrack has reached a notification marker or has increased by a certain period. 
AudioTrack.OnRoutingChangedListener This interface was deprecated in API level 24. users should switch to the general purpose AudioRouting.OnRoutingChangedListener class instead. 
AudioTrack.StreamEventCallback Abstract class to receive event notifications about the stream playback in offloaded mode. 
AuthenticationKeyMetadata Data about authentication keys. 
AuthenticationRequiredException Specialization of SecurityException that is thrown when authentication is needed from the end user before viewing the content. 
Authenticator The class Authenticator represents an object that knows how to obtain authentication for a network connection. 
Authenticator.RequestorType The type of the entity requesting authentication. 
AuthenticatorDescription A Parcelable value type that contains information about an account authenticator. 
AuthenticatorException  
AuthPermission Legacy security code; do not use. 
AuthProvider Legacy security code; do not use. 
AutoCloseable An object that may hold resources (such as file or socket handles) until it is closed. 
AutoCompleteTextView

An editable text view that shows completion suggestions automatically while the user is typing. 

AutoCompleteTextView.OnDismissListener Listener to respond to the AutoCompleteTextView's completion list being dismissed. 
AutoCompleteTextView.Validator This interface is used to make sure that the text entered in this TextView complies to a certain format. 
AutofillId A unique identifier for an autofill node inside an Activity
AutofillManager

The AutofillManager class provides ways for apps and custom views to integrate with the Autofill Framework lifecycle. 

AutofillManager.AutofillCallback Callback for autofill related events. 
AutofillService An AutofillService is a service used to automatically fill the contents of the screen on behalf of a given user - for more information about autofill, read Autofill Framework
AutofillValue Abstracts how a View can be autofilled by an AutofillService
AutomaticGainControl Automatic Gain Control (AGC). 
AutomaticZenRule Rule instance information for a zen (aka DND or Attention Management) mode. 
AutomaticZenRule.Builder  
AutoText This class accesses a dictionary of corrections to frequent misspellings. 
AutoTransition Utility class for creating a default transition that automatically fades, moves, and resizes views during a scene change. 
AvailableNetworkInfo Defines available network information which includes corresponding subscription id, network plmns and corresponding priority to be used for network selection by Opportunistic Network Service when passed through TelephonyManager#updateAvailableNetworks 
AvailableNetworkInfo.Builder Provides a convenient way to set the fields of a AvailableNetworkInfo when creating a new instance. 
AvailableNfcAntenna Represents a single available Nfc antenna on an Android device. 
AwarePairingConfig The config for the Aware Pairing. 
AwarePairingConfig.Builder Builder used to build AwarePairingConfig objects. 
AwareResources The resources of the Aware service. 

B

BackendBusyException Indicates a transient error that prevented a key operation from being created. 
BackEvent Object used to report back gesture progress. 
BackgroundColorSpan Changes the background color of the text to which the span is attached. 
BackgroundServiceStartNotAllowedException Exception thrown when an app tries to start a background Service when it's not allowed to do so. 
BackingStoreException Thrown to indicate that a preferences operation could not complete because of a failure in the backing store, or a failure to contact the backing store. 
BackupAgent Provides the central interface between an application and Android's data backup infrastructure. 
BackupAgentHelper A convenient BackupAgent wrapper class that automatically manages heterogeneous data sets within the backup data, each identified by a unique key prefix. 
BackupDataInput Provides the structured interface through which a BackupAgent reads information from the backup data set, via its onRestore() method. 
BackupDataInputStream Provides an InputStream-like interface for accessing an entity's data during a restore operation. 
BackupDataOutput Provides the structured interface through which a BackupAgent commits information to the backup data set, via its onBackup() method. 
BackupHelper Defines the calling interface that BackupAgentHelper uses when dispatching backup and restore operations to the installed helpers. 
BackupManager The interface through which an application interacts with the Android backup service to request backup and restore operations. 
BadPaddingException This exception is thrown when a particular padding mechanism is expected for the input data but the data is not padded properly. 
BadParcelableException Exception thrown when a Parcelable is malformed or otherwise invalid. 
BarringInfo Provides the barring configuration for a particular service type. 
BarringInfo.BarringServiceInfo Describe the current barring configuration of a cell 
BasalBodyTemperatureRecord Captures the body temperature of a user when at rest (for example, immediately after waking up). 
BasalBodyTemperatureRecord.Builder Builder class for BasalBodyTemperatureRecord 
BasalMetabolicRateRecord Captures the BMR of a user. 
BasalMetabolicRateRecord.Builder Builder class for BasalMetabolicRateRecord 
Base64 Utilities for encoding and decoding the Base64 representation of binary data. 
Base64 This class consists exclusively of static methods for obtaining encoders and decoders for the Base64 encoding scheme. 
Base64.Decoder This class implements a decoder for decoding byte data using the Base64 encoding scheme as specified in RFC 4648 and RFC 2045. 
Base64.Encoder This class implements an encoder for encoding byte data using the Base64 encoding scheme as specified in RFC 4648 and RFC 2045. 
Base64DataException This exception is thrown by Base64InputStream or Base64OutputStream when an error is detected in the data being decoded. 
Base64InputStream An InputStream that does Base64 decoding on the data read through it. 
Base64OutputStream An OutputStream that does Base64 encoding on the data written to it, writing the resulting data to another OutputStream. 
BaseAdapter Common base class of common implementation for an Adapter that can be used in both ListView (by implementing the specialized ListAdapter interface) and Spinner (by implementing the specialized SpinnerAdapter interface). 
BaseBundle A mapping from String keys to values of various types. 
BaseColumns  
BaseDexClassLoader Base class for common functionality between various dex-based ClassLoader implementations. 
BaseExpandableListAdapter Base class for a ExpandableListAdapter used to provide data and Views from some data to an expandable list view. 
BaseInputConnection Base class for implementors of the InputConnection interface, taking care of most of the common behavior for providing a connection to an Editable. 
BaseInterpolator An abstract class which is extended by default interpolators. 
BaseKeyListener Abstract base class for key listeners. 
BaseMovementMethod Base classes for movement methods. 
BaseObj This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
BaseStream<T, S extends BaseStream<T, S>> Base interface for streams, which are sequences of elements supporting sequential and parallel aggregate operations. 
BasicFileAttributes Basic attributes associated with a file in a file system. 
BasicFileAttributeView A file attribute view that provides a view of a basic set of file attributes common to many file systems. 
BasicPermission Android doesn't support SecurityManager
BassBoost Bass boost is an audio effect to boost or amplify low frequencies of the sound. 
BassBoost.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the BassBoost when a parameter value has changed. 
BassBoost.Settings The Settings class regroups all bass boost parameters. 
BatchResultCallback<KeyType, ValueType> The callback interface to return AppSearchBatchResult
BatchUpdateException The subclass of SQLException thrown when an error occurs during a batch update operation. 
BatchUpdates Defines actions to be applied to a template presentation
BatchUpdates.Builder Builder for BatchUpdates objects. 
BatteryManager The BatteryManager class contains strings and constants used for values in the Intent.ACTION_BATTERY_CHANGED Intent, and provides a method for querying battery and charging properties. 
BatteryState The BatteryState class is a representation of a single battery on a device. 
BeginCreateCredentialRequest Request for beginning a create credential request. 
BeginCreateCredentialResponse Response to a BeginCreateCredentialRequest
BeginCreateCredentialResponse.Builder A builder for BeginCreateCredentialResponse 
BeginGetCredentialOption A specific type of credential request to be sent to the provider during the query phase of a get flow. 
BeginGetCredentialRequest Query stage request for getting user's credentials from a given credential provider. 
BeginGetCredentialRequest.Builder Builder for BeginGetCredentialRequest
BeginGetCredentialResponse Response from a credential provider, containing credential entries and other associated data to be shown on the account selector UI. 
BeginGetCredentialResponse.Builder Builds an instance of BeginGetCredentialResponse
BiConsumer<T, U> Represents an operation that accepts two input arguments and returns no result. 
Bidi

Bidi algorithm for ICU

This is an implementation of the Unicode Bidirectional Algorithm. 
Bidi This class implements the Unicode Bidirectional Algorithm. 
BidiClassifier Overrides default Bidi class values with custom ones. 
BidiFormatter Utility class for formatting text for display in a potentially opposite-directionality context without garbling. 
BidiFormatter.Builder A class for building a BidiFormatter with non-default options. 
BidirectionalStream Class for bidirectional sending and receiving of data over HTTP/2 or QUIC connections. 
BidirectionalStream.Builder Builder for BidirectionalStreams. 
BidirectionalStream.Callback Callback interface used to receive callbacks from a BidirectionalStream
BidirectionalTypeConverter<T, V> Abstract base class used convert type T to another type V and back again. 
BidiRun A BidiRun represents a sequence of characters at the same embedding level. 
BiFunction<T, U, R> Represents a function that accepts two arguments and produces a result. 
BigDecimal The BigDecimal class implements immutable arbitrary-precision decimal numbers. 
BigDecimal Immutable, arbitrary-precision signed decimal numbers. 
BigInteger Immutable arbitrary-precision integers. 
BinaryOperator<T> Represents an operation upon two operands of the same type, producing a result of the same type as the operands. 
Binder Base class for a remotable object, the core part of a lightweight remote procedure call mechanism defined by IBinder
BindException Signals that an error occurred while attempting to bind a socket to a local address and port. 
BiometricManager A class that contains biometric utilities. 
BiometricManager.Authenticators Types of authenticators, defined at a level of granularity supported by BiometricManager and BiometricPrompt
BiometricManager.Strings Provides localized strings for an application that uses BiometricPrompt to authenticate the user. 
BiometricPrompt A class that manages a system-provided biometric dialog. 
BiometricPrompt.AuthenticationCallback Callback structure provided to BiometricPrompt#authenticate(CancellationSignal, Executor, AuthenticationCallback) or BiometricPrompt#authenticate(CryptoObject, CancellationSignal, Executor, AuthenticationCallback)
BiometricPrompt.AuthenticationResult Container for callback data from BiometricPrompt.authenticate(android.os.CancellationSignal, java.util.concurrent.Executor, android.hardware.biometrics.BiometricPrompt.AuthenticationCallback) and BiometricPrompt.authenticate(android.hardware.biometrics.BiometricPrompt.CryptoObject, android.os.CancellationSignal, java.util.concurrent.Executor, android.hardware.biometrics.BiometricPrompt.AuthenticationCallback)
BiometricPrompt.Builder A builder that collects arguments to be shown on the system-provided biometric dialog. 
BiometricPrompt.CryptoObject A wrapper class for the cryptographic operations supported by BiometricPrompt. 
BiPredicate<T, U> Represents a predicate (boolean-valued function) of two arguments. 
Bitmap  
Bitmap.CompressFormat Specifies the known formats a bitmap can be compressed into 
Bitmap.Config Possible bitmap configurations. 
BitmapDrawable A Drawable that wraps a bitmap and can be tiled, stretched, or aligned. 
BitmapFactory Creates Bitmap objects from various sources, including files, streams, and byte-arrays. 
BitmapFactory.Options  
BitmapRegionDecoder BitmapRegionDecoder can be used to decode a rectangle region from an image. 
BitmapShader Shader used to draw a bitmap as a texture. 
BitSet This class implements a vector of bits that grows as needed. 
BlackLevelPattern Immutable class to store a 4-element vector of integers corresponding to a 2x2 pattern of color channel offsets used for the black level offsets of each color channel. 
BlendMode  
BlendModeColorFilter A color filter that can be used to tint the source pixels using a single color and a specific BlendMode
Blob The representation (mapping) in the JavaTM programming language of an SQL BLOB value. 
BlobHandle An identifier to represent a blob. 
BlobStoreManager This class provides access to the blob store managed by the system. 
BlobStoreManager.Session Represents an ongoing session of a blob's contribution to the blob store managed by the system. 
BlockedNumberContract

The contract between the blockednumber provider and applications. 

BlockedNumberContract.BlockedNumbers Constants to interact with the blocked numbers list. 
BlockingDeque<E> A Deque that additionally supports blocking operations that wait for the deque to become non-empty when retrieving an element, and wait for space to become available in the deque when storing an element. 
BlockingQueue<E> A Queue that additionally supports operations that wait for the queue to become non-empty when retrieving an element, and wait for space to become available in the queue when storing an element. 
BloodGlucose Represents a unit of blood glucose level (glycaemia). 
BloodGlucoseRecord Captures the concentration of glucose in the blood. 
BloodGlucoseRecord.Builder Builder class for BloodGlucoseRecord 
BloodGlucoseRecord.RelationToMealType Relationship of the meal to the blood glucose measurement. 
BloodGlucoseRecord.SpecimenSource Type of body fluid used to measure the blood glucose. 
BloodPressureRecord Captures the blood pressure of a user. 
BloodPressureRecord.BloodPressureMeasurementLocation Identifier for Blood Pressure Measurement Location 
BloodPressureRecord.BodyPosition Identifier for body position 
BloodPressureRecord.Builder Builder class for BloodPressureRecord 
BluetoothA2dp This class provides the public APIs to control the Bluetooth A2DP profile. 
BluetoothAdapter Represents the local device Bluetooth adapter. 
BluetoothAdapter.LeScanCallback Callback interface used to deliver LE scan results. 
BluetoothAssignedNumbers Bluetooth Assigned Numbers. 
BluetoothClass Represents a Bluetooth class, which describes general characteristics and capabilities of a device. 
BluetoothClass.Device Defines all device class constants. 
BluetoothClass.Device.Major Defines all major device class constants. 
BluetoothClass.Service Defines all service class constants. 
BluetoothCodecConfig Represents the codec configuration for a Bluetooth A2DP source device. 
BluetoothCodecConfig.Builder Builder for BluetoothCodecConfig
BluetoothCodecStatus Represents the codec status (configuration and capability) for a Bluetooth A2DP source device. 
BluetoothCodecStatus.Builder Builder for BluetoothCodecStatus
BluetoothCodecType Represents a supported source codec type for a Bluetooth A2DP device. 
BluetoothCsipSetCoordinator This class provides the public APIs to control the Bluetooth CSIP set coordinator. 
BluetoothDevice Represents a remote Bluetooth device. 
BluetoothDeviceFilter A filter for Bluetooth(non-LE) devices 
BluetoothDeviceFilter.Builder A builder for BluetoothDeviceFilter 
BluetoothGatt Public API for the Bluetooth GATT Profile. 
BluetoothGattCallback This abstract class is used to implement BluetoothGatt callbacks. 
BluetoothGattCharacteristic Represents a Bluetooth GATT Characteristic

A GATT characteristic is a basic data element used to construct a GATT service, BluetoothGattService

BluetoothGattDescriptor Represents a Bluetooth GATT Descriptor

GATT Descriptors contain additional information and attributes of a GATT characteristic, BluetoothGattCharacteristic

BluetoothGattServer Public API for the Bluetooth GATT Profile server role. 
BluetoothGattServerCallback This abstract class is used to implement BluetoothGattServer callbacks. 
BluetoothGattService Represents a Bluetooth GATT Service

Gatt Service contains a collection of BluetoothGattCharacteristic, as well as referenced services. 

BluetoothHeadset Public API for controlling the Bluetooth Headset Service. 
BluetoothHealth This class was deprecated in API level 29. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as BluetoothGatt, BluetoothAdapter.listenUsingL2capChannel(), or BluetoothDevice.createL2capChannel(int) 
BluetoothHealthAppConfiguration This class was deprecated in API level 29. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as BluetoothGatt, BluetoothAdapter.listenUsingL2capChannel(), or BluetoothDevice.createL2capChannel(int) 
BluetoothHealthCallback This class was deprecated in API level 29. Health Device Profile (HDP) and MCAP protocol are no longer used. New apps should use Bluetooth Low Energy based solutions such as BluetoothGatt, BluetoothAdapter.listenUsingL2capChannel(), or BluetoothDevice.createL2capChannel(int) 
BluetoothHearingAid This class provides the public APIs to control the Hearing Aid profile. 
BluetoothHidDevice Provides the public APIs to control the Bluetooth HID Device profile. 
BluetoothHidDevice.Callback The template class that applications use to call callback functions on events from the HID host. 
BluetoothHidDeviceAppQosSettings Represents the Quality of Service (QoS) settings for a Bluetooth HID Device application. 
BluetoothHidDeviceAppSdpSettings Represents the Service Discovery Protocol (SDP) settings for a Bluetooth HID Device application. 
BluetoothLeAdvertiser This class provides a way to perform Bluetooth LE advertise operations, such as starting and stopping advertising. 
BluetoothLeAudio This class provides the public APIs to control the LeAudio profile. 
BluetoothLeAudioCodecConfig Represents the codec configuration for a Bluetooth LE Audio source device. 
BluetoothLeAudioCodecConfig.Builder Builder for BluetoothLeAudioCodecConfig
BluetoothLeAudioCodecStatus Represents the codec status (configuration and capability) for a Bluetooth Le Audio source device. 
BluetoothLeDeviceFilter A filter for Bluetooth LE devices 
BluetoothLeDeviceFilter.Builder Builder for BluetoothLeDeviceFilter 
BluetoothLeScanner This class provides methods to perform scan related operations for Bluetooth LE devices. 
BluetoothManager High level manager used to obtain an instance of an BluetoothAdapter and to conduct overall Bluetooth Management. 
BluetoothProfile Public APIs for the Bluetooth Profiles. 
BluetoothProfile.ServiceListener An interface for notifying BluetoothProfile IPC clients when they have been connected or disconnected to the service. 
BluetoothServerSocket A listening Bluetooth socket. 
BluetoothSocket A connected or connecting Bluetooth socket. 
BluetoothSocketException Thrown when an error occurs during a Bluetooth Socket related exception. 
BluetoothStatusCodes A class with constants representing possible return values for Bluetooth APIs. 
BlurMaskFilter This takes a mask, and blurs its edge by the specified radius. 
BlurMaskFilter.Blur  
BodyFatRecord Captures the body fat percentage of a user. 
BodyFatRecord.Builder Builder class for BodyFatRecord 
BodyTemperatureMeasurementLocation Where on the user's body a temperature measurement was taken from. 
BodyTemperatureRecord Captures the body temperature of a user. 
BodyTemperatureRecord.Builder Builder class for BodyTemperatureRecord 
BodyWaterMassRecord Captures the user's body water mass. 
BodyWaterMassRecord.Builder Builder class for BodyWaterMassRecord 
BoneMassRecord Captures the user's bone mass. 
BoneMassRecord.Builder Builder class for BoneMassRecord 
Boolean The Boolean class wraps a value of the primitive type boolean in an object. 
BooleanAction Action sent by user toggling a Control between checked/unchecked. 
BooleanSupplier Represents a supplier of boolean-valued results. 
BootstrapMethodError Thrown to indicate that an invokedynamic instruction or a dynamic constant failed to resolve its bootstrap method and arguments, or for invokedynamic instruction the bootstrap method has failed to provide a call site with a target of the correct method type, or for a dynamic constant the bootstrap method has failed to provide a constant value of the required type. 
BoringLayout A BoringLayout is a very simple Layout implementation for text that fits on a single line and is all left-to-right characters. 
BoringLayout.Metrics  
BounceInterpolator An interpolator where the change bounces at the end. 
BrailleDisplayController Used to communicate with a Braille display that supports the Braille display HID standard (usage page 0x41). 
BrailleDisplayController.BrailleDisplayCallback Interface provided to BrailleDisplayController connection methods to receive callbacks from the system. 
BreakIterator [icu enhancement] ICU's replacement for BreakIterator. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
BreakIterator The BreakIterator class implements methods for finding the location of boundaries in text. 
BroadcastInfoRequest A request for the information retrieved from broadcast signal. 
BroadcastInfoResponse A response of BroadcastInfoRequest for information retrieved from broadcast signal. 
BroadcastOptions Helper class for building an options Bundle that can be used with Context.sendBroadcast(Intent) and related methods. 
BroadcastReceiver Base class for code that receives and handles broadcast intents sent by Context.sendBroadcast(Intent)
BroadcastReceiver.PendingResult State for a result that is pending for a broadcast receiver. 
BrokenBarrierException Exception thrown when a thread tries to wait upon a barrier that is in a broken state, or which enters the broken state while the thread is waiting. 
Browser  
BrowserCompatHostnameVerifier This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
BuddhistCalendar BuddhistCalendar is a subclass of GregorianCalendar that numbers years since the birth of the Buddha. 
Buffer A container for data of a specific primitive type. 
BufferedInputStream A BufferedInputStream adds functionality to another input stream-namely, the ability to buffer the input and to support the mark and reset methods. 
BufferedOutputStream The class implements a buffered output stream. 
BufferedReader Reads text from a character-input stream, buffering characters so as to provide for the efficient reading of characters, arrays, and lines. 
BufferedWriter Writes text to a character-output stream, buffering characters so as to provide for the efficient writing of single characters, arrays, and strings. 
BufferOverflowException Unchecked exception thrown when a relative put operation reaches the target buffer's limit. 
BufferUnderflowException Unchecked exception thrown when a relative get operation reaches the source buffer's limit. 
BugreportManager Class that provides a privileged API to capture and consume bugreports. 
BugreportManager.BugreportCallback An interface describing the callback for bugreport progress and status. 
Build Information about the current build, extracted from system properties. 
Build.Partition Build information for a particular device partition. 
Build.VERSION Various version strings. 
Build.VERSION_CODES Enumeration of the currently known SDK version codes. 
BulletSpan A span which styles paragraphs as bullet points (respecting layout direction). 
Bundle A mapping from String keys to various Parcelable values. 
BundleSession An instances of this class represents a session with data stored in a bundle. 
Button A user interface element the user can tap or click to perform an action. 
Byte The Byte class wraps a value of primitive type byte in an object. 
Byte2 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Byte3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Byte4 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ByteArrayInputStream A ByteArrayInputStream contains an internal buffer that contains bytes that may be read from the stream. 
ByteArrayOutputStream This class implements an output stream in which the data is written into a byte array. 
ByteBuffer A byte buffer. 
ByteChannel A channel that can read and write bytes. 
ByteOrder A typesafe enumeration for byte orders. 

C

CacheRequest Represents channels for storing resources in the ResponseCache. 
CacheResponse Represent channels for retrieving resources from the ResponseCache. 
Calendar [icu enhancement] ICU's replacement for Calendar. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
Calendar The Calendar class is an abstract class that provides methods for converting between a specific instant in time and a set of calendar fields such as YEAR, MONTH, DAY_OF_MONTH, HOUR, and so on, and for manipulating the calendar fields, such as getting the date of the next week. 
Calendar.Builder Calendar.Builder is used for creating a Calendar from various date-time parameters. 
Calendar.WeekData Simple, immutable struct-like class for access to the CLDR week data. 
CalendarContract

The contract between the calendar provider and applications. 

CalendarContract.Attendees Fields and helpers for interacting with Attendees. 
CalendarContract.AttendeesColumns Columns from the Attendees table that other tables join into themselves. 
CalendarContract.CalendarAlerts Fields and helpers for accessing calendar alerts information. 
CalendarContract.CalendarAlertsColumns  
CalendarContract.CalendarCache CalendarCache stores some settings for calendar including the current time zone for the instances. 
CalendarContract.CalendarCacheColumns  
CalendarContract.CalendarColumns Columns specific to the Calendars Uri that other Uris can query. 
CalendarContract.CalendarEntity Class that represents a Calendar Entity. 
CalendarContract.Calendars Constants and helpers for the Calendars table, which contains details for individual calendars. 
CalendarContract.CalendarSyncColumns Generic columns for use by sync adapters. 
CalendarContract.Colors Fields for accessing colors available for a given account. 
CalendarContract.ColorsColumns  
CalendarContract.EventDays Fields and helpers for querying for a list of days that contain events. 
CalendarContract.EventDaysColumns  
CalendarContract.Events Constants and helpers for the Events table, which contains details for individual events. 
CalendarContract.EventsColumns Columns from the Events table that other tables join into themselves. 
CalendarContract.EventsEntity Class that represents an Event Entity. 
CalendarContract.ExtendedProperties Fields for accessing the Extended Properties. 
CalendarContract.ExtendedPropertiesColumns  
CalendarContract.Instances Fields and helpers for interacting with Instances. 
CalendarContract.Reminders Fields and helpers for accessing reminders for an event. 
CalendarContract.RemindersColumns  
CalendarContract.SyncColumns Columns for Sync information used by Calendars and Events tables. 
CalendarContract.SyncState A table provided for sync adapters to use for storing private sync state data. 
CalendarView This class is a calendar widget for displaying and selecting dates. 
CalendarView.OnDateChangeListener The callback used to indicate the user changes the date. 
Call Represents an ongoing phone call that the in-call app should present to the user. 
Call.Callback Defines callbacks which inform the InCallService of changes to a Call
Call.Details  
Call.RttCall A class that holds the state that describes the state of the RTT channel to the remote party, if it is active. 
Callable<V> A task that returns a result and may throw an exception. 
CallableStatement The interface used to execute SQL stored procedures. 
CallAttributes CallAttributes represents a set of properties that define a new Call. 
CallAttributes.Builder Build an instance of CallAttributes
CallAudioState Encapsulates the telecom audio state, including the current audio routing, supported audio routing and mute. 
Callback

Implementations of this interface are passed to a CallbackHandler, allowing underlying security services the ability to interact with a calling application to retrieve specific authentication data such as usernames and passwords, or to display certain information, such as error and warning messages. 

CallbackException Exception passed to UrlRequest.Callback.onFailed() when UrlRequest.Callback or UploadDataProvider method throws an exception. 
CallbackHandler

An application implements a CallbackHandler and passes it to underlying security services so that they may interact with the application to retrieve specific authentication data, such as usernames and passwords, or to display certain information, such as error and warning messages. 

CallControl CallControl provides client side control of a call. 
CallControlCallback CallControlCallback relays call updates (that require a response) from the Telecom framework out to the application.This can include operations which the app must implement on a Call due to the presence of other calls on the device, requests relayed from a Bluetooth device, or from another calling surface. 
CallEndpoint Encapsulates the endpoint where call media can flow 
CallEndpointException This class represents a set of exceptions that can occur when requesting a CallEndpoint change. 
CallEventCallback CallEventCallback relays call updates (that do not require any action) from the Telecom framework out to the application. 
CallException This class defines exceptions that can be thrown when using Telecom APIs with OutcomeReceivers. 
CallingAppInfo Information pertaining to the calling application, including the package name and a list of app signatures. 
CallLog The CallLog provider contains information about placed and received calls. 
CallLog.Calls Contains the recent calls. 
CallLog.Locations Table that contains information on location data sent via call composer. 
CallRedirectionService This service can be implemented to interact between Telecom and its implementor for making outgoing call with optional redirection/cancellation purposes. 
CallScreeningService This service can be implemented by the default dialer (see TelecomManager#getDefaultDialerPackage()) or a third party app to allow or disallow incoming calls before they are shown to a user. 
CallScreeningService.CallResponse Information about how to respond to an incoming call. 
CallScreeningService.CallResponse.Builder  
CallSite A CallSite is a holder for a variable MethodHandle, which is called its target
CamcorderProfile Retrieves the predefined camcorder profile settings for camcorder applications. 
Camera A camera instance can be used to compute 3D transformations and generate a matrix that can be applied, for instance, on a Canvas
Camera This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.Area This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.AutoFocusCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.AutoFocusMoveCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.CameraInfo This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.ErrorCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.Face This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.FaceDetectionListener This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.OnZoomChangeListener This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.Parameters This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.PictureCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.PreviewCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.ShutterCallback This interface was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
Camera.Size This class was deprecated in API level 21. We recommend using the new android.hardware.camera2 API for new applications. 
CameraAccessException

CameraAccessException is thrown if a camera device could not be queried or opened by the CameraManager, or if the connection to an opened CameraDevice is no longer valid. 

CameraCaptureSession A configured capture session for a CameraDevice, used for capturing images from the camera or reprocessing images captured from the camera in the same session previously. 
CameraCaptureSession.CaptureCallback

A callback object for tracking the progress of a CaptureRequest submitted to the camera device. 

CameraCaptureSession.StateCallback A callback object for receiving updates about the state of a camera capture session. 
CameraCharacteristics

The properties describing a CameraDevice

CameraCharacteristics.Key<T> A Key is used to do camera characteristics field lookups with CameraCharacteristics#get
CameraConstrainedHighSpeedCaptureSession A constrained high speed capture session for a CameraDevice, used for capturing high speed images from the CameraDevice for high speed video recording use case. 
CameraDevice

The CameraDevice class is a representation of a single camera connected to an Android device, allowing for fine-grain control of image capture and post-processing at high frame rates. 

CameraDevice.CameraDeviceSetup CameraDeviceSetup is a limited representation of CameraDevice that can be used to query device specific information which would otherwise need a CameraDevice instance. 
CameraDevice.StateCallback A callback objects for receiving updates about the state of a camera device. 
CameraExtensionCharacteristics

Allows clients to query availability and supported resolutions of camera extensions. 

CameraExtensionSession A camera capture session that enables access to device-specific camera extensions, which often use multi-frame bursts and sophisticated post-process algorithms for image capture. 
CameraExtensionSession.ExtensionCaptureCallback A callback object for tracking the progress of a CaptureRequest submitted to the camera device. 
CameraExtensionSession.StateCallback A callback object for receiving updates about the state of a camera extension session. 
CameraExtensionSession.StillCaptureLatency Realtime calculated still CameraExtensionSession.capture(CaptureRequest, Executor, ExtensionCaptureCallback) latency. 
CameraManager

A system service manager for detecting, characterizing, and connecting to CameraDevices

CameraManager.AvailabilityCallback A callback for camera devices becoming available or unavailable to open. 
CameraManager.TorchCallback A callback for camera flash torch modes becoming unavailable, disabled, or enabled. 
CameraMetadata<TKey> The base class for camera controls and information. 
CameraOfflineSession A camera capture session that was switched to offline mode via successful call to CameraCaptureSession#switchToOffline
CameraOfflineSession.CameraOfflineSessionCallback  
CameraPrewarmService Extend this class to implement a camera prewarm service. 
CameraProfile The CameraProfile class is used to retrieve the pre-defined still image capture (jpeg) quality levels (0-100) used for low, medium, and high quality settings in the Camera application. 
CancellationException Exception indicating that the result of a value-producing task, such as a FutureTask, cannot be retrieved because the task was cancelled. 
CancellationSignal Provides the ability to cancel an operation in progress. 
CancellationSignal.OnCancelListener Listens for cancellation. 
CancelledKeyException Unchecked exception thrown when an attempt is made to use a selection key that is no longer valid. 
Canvas The Canvas class holds the "draw" calls. 
Canvas.EdgeType This enum was deprecated in API level 30. quickReject no longer uses this. 
Canvas.VertexMode  
Capability Represents a capability that can be performed by an app, also known as App Action. 
Capability Immutable class to store the camera capability, its corresponding maximum streaming dimension and zoom range. 
Capability.Builder Builder class for Capability
CapabilityParams Represents the parameters and its matching names which can be associated with a Capability
CapabilityParams.Builder Builder class for CapabilityParams
CaptioningManager Contains methods for accessing and monitoring preferred video captioning state and visual properties. 
CaptioningManager.CaptioningChangeListener Listener for changes in captioning properties, including enabled state and user style preferences. 
CaptioningManager.CaptionStyle Specifies visual properties for video captions, including foreground and background colors, edge properties, and typeface. 
CaptivePortal A class allowing apps handling the ConnectivityManager#ACTION_CAPTIVE_PORTAL_SIGN_IN activity to indicate to the system different outcomes of captive portal sign in. 
CaptureFailure A report of failed capture for a single image capture from the image sensor. 
CaptureRequest

An immutable package of settings and outputs needed to capture a single image from the camera device. 

CaptureRequest.Builder A builder for capture requests. 
CaptureRequest.Key<T> A Key is used to do capture request field lookups with CaptureRequest#get or to set fields with CaptureRequest.Builder#set(Key, Object)
CaptureResult

The subset of the results of a single image capture from the image sensor. 

CaptureResult.Key<T> A Key is used to do capture result field lookups with CaptureResult#get
CardEmulation This class can be used to query the state of NFC card emulation services. 
CarrierConfigManager Provides access to telephony configuration values that are carrier-specific. 
CarrierConfigManager.Apn Configs used for APN setup. 
CarrierConfigManager.Bsf This groups the BSF (BootStrapping Function) related configs. 
CarrierConfigManager.CarrierConfigChangeListener Listener interface to get a notification when the carrier configurations have changed. 
CarrierConfigManager.Gps GPS configs. 
CarrierConfigManager.Ims Configs used by the IMS stack. 
CarrierConfigManager.ImsEmergency Emergency Call/E911. 
CarrierConfigManager.ImsRtt IMS RTT configs. 
CarrierConfigManager.ImsServiceEntitlement Configs used by ImsServiceEntitlement. 
CarrierConfigManager.ImsSms IMS SMS configs. 
CarrierConfigManager.ImsSs IMS supplementary services configs. 
CarrierConfigManager.ImsVoice IMS Voice configs. 
CarrierConfigManager.ImsVt IMS Video Telephony configs. 
CarrierConfigManager.ImsWfc WiFi Calling. 
CarrierConfigManager.Iwlan Configs used for epdg tunnel bring up. 
CarrierIdentifier Used to pass info to CarrierConfigService implementations so they can decide what values to return. 
CarrierMessagingClientService If the default SMS app has a service that extends this class, the system always tries to bind it so that the process is always running, which allows the app to have a persistent connection to the server. 
CarrierMessagingService A service that receives calls from the system when new SMS and MMS are sent or received. 
CarrierMessagingService.ResultCallback<T> A callback interface used to provide results asynchronously. 
CarrierMessagingService.SendMmsResult The result of sending an MMS. 
CarrierMessagingService.SendMultipartSmsResult The result of sending a multipart SMS. 
CarrierMessagingService.SendSmsResult The result of sending an SMS. 
CarrierService A service that exposes carrier-specific functionality to the system. 
CaseMap Low-level case mapping options and methods. 
CaseMap.Fold Case folding options and methods. 
CaseMap.Lower Lowercasing options and methods. 
CaseMap.Title Titlecasing options and methods. 
CaseMap.Upper Uppercasing options and methods. 
CDATASection CDATA sections are used to escape blocks of text containing characters that would otherwise be regarded as markup. 
CdmaCellLocation This class was deprecated in API level 31. use CellIdentity. 
CellIdentity CellIdentity represents the identity of a unique cell. 
CellIdentityCdma CellIdentity is to represent a unique CDMA cell 
CellIdentityGsm CellIdentity to represent a unique GSM cell 
CellIdentityLte CellIdentity is to represent a unique LTE cell 
CellIdentityNr Information to represent a unique NR(New Radio 5G) cell. 
CellIdentityTdscdma CellIdentity is to represent a unique TD-SCDMA cell 
CellIdentityWcdma CellIdentity to represent a unique UMTS cell 
CellInfo Immutable cell information from a point in time. 
CellInfoCdma A CellInfo representing a CDMA cell that provides identity and measurement info. 
CellInfoGsm A CellInfo representing a GSM cell that provides identity and measurement info. 
CellInfoLte A CellInfo representing an LTE cell that provides identity and measurement info. 
CellInfoNr A CellInfo representing an 5G NR cell that provides identity and measurement info. 
CellInfoTdscdma A CellInfo representing a TD-SCDMA cell that provides identity and measurement info. 
CellInfoWcdma A CellInfo representing a WCDMA cell that provides identity and measurement info. 
CellLocation This class was deprecated in API level 31. use CellIdentity. 
CellSignalStrength Abstract base class for cell phone signal strength related information. 
CellSignalStrengthCdma Signal strength related information. 
CellSignalStrengthGsm GSM signal strength related information. 
CellSignalStrengthLte LTE signal strength related information. 
CellSignalStrengthNr 5G NR signal strength related information. 
CellSignalStrengthTdscdma Tdscdma signal strength related information. 
CellSignalStrengthWcdma Wcdma signal strength related information. 
Certificate This interface was deprecated in API level 3. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.cert.Certificate and related classes. 
Certificate

Abstract class for managing a variety of identity certificates. 

Certificate

Abstract class for managing a variety of identity certificates. 

Certificate.CertificateRep Alternate Certificate class for serialization. 
CertificateEncodingException Certificate Encoding Exception. 
CertificateEncodingException Certificate Encoding Exception. 
CertificateException This exception indicates one of a variety of certificate problems. 
CertificateException This exception indicates one of a variety of certificate problems. 
CertificateExpiredException Certificate Expired Exception. 
CertificateExpiredException Certificate Expired Exception. 
CertificateFactory This class defines the functionality of a certificate factory, which is used to generate certificate, certification path (CertPath) and certificate revocation list (CRL) objects from their encodings. 
CertificateFactorySpi This class defines the Service Provider Interface (SPI) for the CertificateFactory class. 
CertificateNotYetValidException Certificate is not yet valid exception. 
CertificateNotYetValidException Certificate is not yet valid exception. 
CertificateParsingException Certificate Parsing Exception. 
CertificateParsingException Certificate Parsing Exception. 
CertificateRevokedException An exception that indicates an X.509 certificate is revoked. 
CertPath An immutable sequence of certificates (a certification path). 
CertPath.CertPathRep Alternate CertPath class for serialization. 
CertPathBuilder A class for building certification paths (also known as certificate chains). 
CertPathBuilderException An exception indicating one of a variety of problems encountered when building a certification path with a CertPathBuilder
CertPathBuilderResult A specification of the result of a certification path builder algorithm. 
CertPathBuilderSpi The Service Provider Interface (SPI) for the CertPathBuilder class. 
CertPathChecker

Performs one or more checks on each Certificate of a CertPath

CertPathParameters A specification of certification path algorithm parameters. 
CertPathTrustManagerParameters A wrapper for CertPathParameters. 
CertPathValidator A class for validating certification paths (also known as certificate chains). 
CertPathValidatorException An exception indicating one of a variety of problems encountered when validating a certification path. 
CertPathValidatorException.BasicReason The BasicReason enumerates the potential reasons that a certification path of any type may be invalid. 
CertPathValidatorException.Reason The reason the validation algorithm failed. 
CertPathValidatorResult A specification of the result of a certification path validator algorithm. 
CertPathValidatorSpi The Service Provider Interface (SPI) for the CertPathValidator class. 
CertSelector A selector that defines a set of criteria for selecting Certificates. 
CertStore A class for retrieving Certificates and CRLs from a repository. 
CertStoreException An exception indicating one of a variety of problems retrieving certificates and CRLs from a CertStore
CertStoreParameters A specification of CertStore parameters. 
CertStoreSpi The Service Provider Interface (SPI) for the CertStore class. 
CervicalMucusRecord Captures the description of cervical mucus. 
CervicalMucusRecord.Builder Builder class for CervicalMucusRecord 
CervicalMucusRecord.CervicalMucusAppearance Identifier for Cervical Mucus Appearance 
CervicalMucusRecord.CervicalMucusSensation Identifier for Cervical Mucus Sensation 
ChaCha20ParameterSpec This class specifies the parameters used with the ChaCha20 algorithm. 
ChangeBounds This transition captures the layout bounds of target views before and after the scene change and animates those changes during the transition. 
ChangeClipBounds ChangeClipBounds captures the View.getClipBounds() before and after the scene change and animates those changes during the transition. 
ChangedPackages Packages that have been changed since the last time they were requested. 
ChangeImageTransform This Transition captures an ImageView's matrix before and after the scene change and animates it during the transition. 
ChangeLogsRequest Request class for HealthConnectManager#getChangeLogs 
ChangeLogsRequest.Builder Builder class for ChangeLogsRequest 
ChangeLogsResponse Response class for HealthConnectManager#getChangeLogs This is the response to clients fetching changes. 
ChangeLogsResponse.DeletedLog A change log holds the Metadata#getId() of a deleted Record. 
ChangeLogTokenRequest A class to request changelog token using HealthConnectManager#getChangeLogToken 
ChangeLogTokenRequest.Builder Builder for ChangeLogTokenRequest 
ChangeLogTokenResponse Response class for HealthConnectManager#getChangeLogToken
ChangeScroll This transition captures the scroll properties of targets before and after the scene change and animates any changes. 
ChangeTransform This Transition captures scale and rotation for Views before and after the scene change and animates those changes during the transition. 
Channel Instances of this class represent an ISO/IEC 7816-4 channel opened to a Secure Element. 
Channel A nexus for I/O operations. 
Channels Utility methods for channels and streams. 
Character The Character class wraps a value of the primitive type char in an object. 
Character.Subset Instances of this class represent particular subsets of the Unicode character set. 
Character.UnicodeBlock A family of character subsets representing the character blocks in the Unicode specification. 
Character.UnicodeScript A family of character subsets representing the character scripts defined in the Unicode Standard Annex #24: Script Names
CharacterCodingException Checked exception thrown when a character encoding or decoding error occurs. 
CharacterData The CharacterData interface extends Node with a set of attributes and methods for accessing character data in the DOM. 
Characteristics The characteristics of the Wi-Fi Aware implementation. 
CharacterIterator This interface defines a protocol for bidirectional iteration over text. 
CharacterPickerDialog Dialog for choosing accented characters related to a base character. 
CharacterStyle The classes that affect character-level text formatting extend this class. 
CharArrayBuffer This is used for Cursor#copyStringToBuffer 
CharArrayReader This class implements a character buffer that can be used as a character-input stream. 
CharArrayWriter This class implements a character buffer that can be used as an Writer. 
CharBuffer A char buffer. 
CharConversionException Base class for character conversion exceptions. 
CharSequence A CharSequence is a readable sequence of char values. 
CharSequenceTransformation Replaces a TextView child of a CustomDescription with the contents of one or more regular expressions (regexs). 
CharSequenceTransformation.Builder Builder for CharSequenceTransformation objects. 
Charset A named mapping between sequences of sixteen-bit Unicode code units and sequences of bytes. 
CharsetDecoder An engine that can transform a sequence of bytes in a specific charset into a sequence of sixteen-bit Unicode characters. 
CharsetEncoder An engine that can transform a sequence of sixteen-bit Unicode characters into a sequence of bytes in a specific charset. 
CharsetProvider Charset service-provider class. 
Checkable Defines an extension for views that make them checkable. 
CheckBox

A checkbox is a specific type of two-states button that can be either checked or unchecked. 

CheckBoxPreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
CheckedInputStream An input stream that also maintains a checksum of the data being read. 
CheckedOutputStream An output stream that also maintains a checksum of the data being written. 
CheckedTextView An extension to TextView that supports the Checkable interface and displays. 
Checksum A typed checksum. 
Checksum An interface representing a data checksum. 
ChildSaProposal ChildSaProposal represents a proposed configuration to negotiate a Child SA. 
ChildSaProposal.Builder This class is used to incrementally construct a ChildSaProposal. 
ChildSessionCallback Callback interface for receiving state changes of a Child Session. 
ChildSessionConfiguration ChildSessionConfiguration represents the negotiated configuration for a Child Session. 
ChildSessionConfiguration.Builder This class can be used to incrementally construct a ChildSessionConfiguration
ChildSessionParams ChildSessionParams is an abstract class that represents proposed configurations for negotiating a Child Session. 
ChineseCalendar ChineseCalendar is a concrete subclass of Calendar that implements a traditional Chinese calendar. 
ChoiceFormat A ChoiceFormat allows you to attach a format to a range of numbers. 
ChooserAction A ChooserAction is an app-defined action that can be provided to the Android Sharesheet to be shown to the user when Intent.ACTION_CHOOSER is invoked. 
ChooserAction.Builder Builder class for ChooserAction objects 
ChooserResult An event reported to a supplied [IntentSender] by the system chooser when an activity is selected or other actions are taken to complete the session. 
ChooserTarget This class was deprecated in API level 30. For publishing direct share targets, please follow the instructions in https://developer.android.com/training/sharing/receive.html#providing-direct-share-targets instead. 
ChooserTargetService This class was deprecated in API level 30. For publishing direct share targets, please follow the instructions in https://developer.android.com/training/sharing/receive.html#providing-direct-share-targets instead. 
Choreographer Coordinates the timing of animations, input and drawing. 
Choreographer.FrameCallback Implement this interface to receive a callback when a new display frame is being rendered. 
Choreographer.FrameData The payload for VsyncCallback which includes frame information such as when the frame started being rendered, and multiple possible frame timelines and their information including deadline and expected present time. 
Choreographer.FrameTimeline Holds data that describes one possible VSync frame event to render at. 
Choreographer.VsyncCallback Implement this interface to receive a callback to start the next frame. 
ChronoField A standard set of fields. 
ChronoLocalDate A date without time-of-day or time-zone in an arbitrary chronology, intended for advanced globalization use cases. 
ChronoLocalDateTime<D extends ChronoLocalDate> A date-time without a time-zone in an arbitrary chronology, intended for advanced globalization use cases. 
Chronology A calendar system, used to organize and identify dates. 
Chronometer Class that implements a simple timer. 
Chronometer.OnChronometerTickListener A callback that notifies when the chronometer has incremented on its own. 
ChronoPeriod A date-based amount of time, such as '3 years, 4 months and 5 days' in an arbitrary chronology, intended for advanced globalization use cases. 
ChronoUnit A standard set of date periods units. 
ChronoZonedDateTime<D extends ChronoLocalDate> A date-time with a time-zone in an arbitrary chronology, intended for advanced globalization use cases. 
Cipher This class provides the functionality of a cryptographic cipher for encryption and decryption. 
CipherInputStream A CipherInputStream is composed of an InputStream and a Cipher so that read() methods return data that are read in from the underlying InputStream but have been additionally processed by the Cipher. 
CipherOutputStream A CipherOutputStream is composed of an OutputStream and a Cipher so that write() methods first process the data before writing them out to the underlying OutputStream. 
CipherSpi This class defines the Service Provider Interface (SPI) for the Cipher class. 
CipherSuiteNotSupportedException Thrown if trying to use a cipher suite which isn't supported. 
CircularPropagation A propagation that varies with the distance to the epicenter of the Transition or center of the scene if no epicenter exists. 
CivicLocationKeys Civic Address key types used to define address elements. 
Class<T> Instances of the class Class represent classes and interfaces in a running Java application. 
ClassCastException Thrown to indicate that the code has attempted to cast an object to a subclass of which it is not an instance. 
ClassCircularityError Thrown when the Java Virtual Machine detects a circularity in the superclass hierarchy of a class being loaded. 
ClassFormatError Thrown when the Java Virtual Machine attempts to read a class file and determines that the file is malformed or otherwise cannot be interpreted as a class file. 
ClassLoader A class loader is an object that is responsible for loading classes. 
ClassNotFoundException Thrown when an application tries to load in a class through its string name using:
  • The forName method in class Class
ClassValue<T> Lazily associate a computed value with (potentially) every type. 
Cleaner Cleaner manages a set of object references and corresponding cleaning actions. 
Cleaner.Cleanable Cleanable represents an object and a cleaning action registered in a Cleaner
ClearCredentialStateException Represents an error encountered during the CredentialManager#clearCredentialState(ClearCredentialStateRequest, CancellationSignal, Executor, OutcomeReceiver) operation. 
ClearCredentialStateRequest A request class for clearing a user's credential state from the credential providers. 
ClearCredentialStateRequest A request class for clearing a user's credential state. 
CleartextNetworkViolation  
ClickableSpan If an object of this type is attached to the text of a TextView with a movement method of LinkMovementMethod, the affected spans of text can be selected. 
ClientCertRequest ClientCertRequest: The user receives an instance of this class as a parameter of WebViewClient#onReceivedClientCertRequest
ClientInfoStatus Enumeration for status of the reason that a property could not be set via a call to Connection.setClientInfo 
ClipboardManager Interface to the clipboard service, for placing and retrieving text in the global clipboard. 
ClipboardManager This class was deprecated in API level 11. Old text-only interface to the clipboard. See ClipboardManager for the modern API. 
ClipboardManager.OnPrimaryClipChangedListener Defines a listener callback that is invoked when the primary clip on the clipboard changes. 
ClipData Representation of a clipped data on the clipboard. 
ClipData.Item Description of a single item in a ClipData. 
ClipData.Item.Builder A builder for a ClipData Item. 
ClipDescription Meta-data describing the contents of a ClipData
ClipDrawable A Drawable that clips another Drawable based on this Drawable's current level value. 
Clob The mapping in the JavaTM programming language for the SQL CLOB type. 
Clock A clock providing access to the current instant, date and time using a time-zone. 
Cloneable A class implements the Cloneable interface to indicate to the Object.clone() method that it is legal for that method to make a field-for-field copy of instances of that class. 
CloneNotSupportedException Thrown to indicate that the clone method in class Object has been called to clone an object, but that the object's class does not implement the Cloneable interface. 
Closeable A Closeable is a source or destination of data that can be closed. 
ClosedByInterruptException Checked exception received by a thread when another thread interrupts it while it is blocked in an I/O operation upon a channel. 
ClosedChannelException Checked exception thrown when an attempt is made to invoke or complete an I/O operation upon channel that is closed, or at least closed to that operation. 
ClosedDirectoryStreamException Unchecked exception thrown when an attempt is made to invoke an operation on a directory stream that is closed. 
ClosedFileSystemException Unchecked exception thrown when an attempt is made to invoke an operation on a file and the file system is closed. 
ClosedSelectorException Unchecked exception thrown when an attempt is made to invoke an I/O operation upon a closed selector. 
ClosedSubscriberGroupInfo Information to represent a closed subscriber group. 
ClosedWatchServiceException Unchecked exception thrown when an attempt is made to invoke an operation on a watch service that is closed. 
CloseGuard CloseGuard is a mechanism for flagging implicit finalizer cleanup of resources that should have been cleaned up by explicit close methods (aka "explicit termination methods" in Effective Java). 
CloudMediaProvider Base class for a cloud media provider. 
CloudMediaProvider.CloudMediaSurfaceController Manages rendering the preview of media items on given instances of Surface
CloudMediaProvider.CloudMediaSurfaceStateChangedCallback This class is used by CloudMediaProvider to send Surface state updates to picker launched via MediaStore#ACTION_PICK_IMAGES
CloudMediaProviderContract Defines the contract between a cloud media provider and the OS. 
CloudMediaProviderContract.AlbumColumns Constants related to an album item, including Cursor column names 
CloudMediaProviderContract.MediaCollectionInfo Constants related to a media collection 
CloudMediaProviderContract.MediaColumns Constants related to a media item, including Cursor column names 
CoderMalfunctionError Error thrown when the decodeLoop method of a CharsetDecoder, or the encodeLoop method of a CharsetEncoder, throws an unexpected exception. 
CoderResult A description of the result state of a coder. 
CodeSigner This class encapsulates information about a code signer. 
CodeSource Legacy security code; do not use. 
CodingErrorAction A typesafe enumeration for coding-error actions. 
CollapsibleActionView When a View implements this interface it will receive callbacks when expanded or collapsed as an action view alongside the optional, app-specified callbacks to OnActionExpandListener
CollationElementIterator CollationElementIterator is an iterator created by a RuleBasedCollator to walk through a string. 
CollationElementIterator The CollationElementIterator class is used as an iterator to walk through each character of an international string. 
CollationKey A CollationKey represents a String under the rules of a specific Collator object. 
CollationKey A CollationKey represents a String under the rules of a specific Collator object. 
CollationKey.BoundMode Options that used in the API CollationKey.getBound() for getting a CollationKey based on the bound mode requested. 
Collator [icu enhancement] ICU's replacement for Collator. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
Collator The Collator class performs locale-sensitive String comparison. 
Collator.ReorderCodes Reordering codes for non-script groups that can be reordered under collation. 
Collection<E> The root interface in the collection hierarchy
CollectionCertStoreParameters Parameters used as input for the Collection CertStore algorithm. 
Collections This class consists exclusively of static methods that operate on or return collections. 
Collector<T, A, R> A mutable reduction operation that accumulates input elements into a mutable result container, optionally transforming the accumulated result into a final representation after all input elements have been processed. 
Collector.Characteristics Characteristics indicating properties of a Collector, which can be used to optimize reduction implementations. 
Collectors Implementations of Collector that implement various useful reduction operations, such as accumulating elements into collections, summarizing elements according to various criteria, etc. 
Color

The Color class provides methods for creating, converting and manipulating colors. 

ColorDrawable A specialized Drawable that fills the Canvas with a specified color. 
ColorFilter A color filter can be used with a Paint to modify the color of each pixel drawn with that paint. 
ColorMatrix 4x5 matrix for transforming the color and alpha components of a Bitmap. 
ColorMatrixColorFilter A color filter that transforms colors through a 4x5 color matrix. 
ColorSpace

A ColorSpace is used to identify a specific organization of colors. 

ColorSpace.Adaptation

List of adaptation matrices that can be used for chromatic adaptation using the von Kries transform. 

ColorSpace.Connector

A connector transforms colors from a source color space to a destination color space. 

ColorSpace.Model A color model is required by a ColorSpace to describe the way colors can be represented as tuples of numbers. 
ColorSpace.Named

List of common, named color spaces. 

ColorSpace.RenderIntent

A render intent determines how a connector maps colors from one color space to another. 

ColorSpace.Rgb

An RGB color space is an additive color space using the RGB color model (a color is therefore represented by a tuple of 3 numbers). 

ColorSpace.Rgb.TransferParameters

Defines the parameters for the ICC parametric curve type 4, as defined in ICC.1:2004-10, section 10.15. 

ColorSpaceProfiles Immutable class with information about supported color space profiles. 
ColorSpaceTransform Immutable class for describing a 3x3 matrix of Rational values in row-major order. 
ColorStateList Lets you map View state sets to colors. 
ColorStateListDrawable A Drawable that manages a ColorDrawable to make it stateful and backed by a ColorStateList
CombinedVibration A CombinedVibration describes a combination of haptic effects to be performed by one or more Vibrators
CombinedVibration.ParallelCombination A combination of haptic effects that should be played in multiple vibrators in parallel. 
CommandAction A simple ControlAction indicating that the user has interacted with a Control created using a StatelessTemplate
CommandRequest A request for command from broadcast signal. 
CommandResponse A response for command from broadcast signal. 
Comment This interface inherits from CharacterData and represents the content of a comment, i.e., all the characters between the starting ' <!--' and ending '-->'. 
CommonDataSource Interface that defines the methods which are common between DataSource, XADataSource and ConnectionPoolDataSource
CompactDecimalFormat Formats numbers in compact (abbreviated) notation, like "1.2K" instead of "1200". 
CompactDecimalFormat.CompactStyle Style parameter for CompactDecimalFormat. 
CompactNotation A class that defines the scientific notation style to be used when formatting numbers in NumberFormatter. 
CompanionDeviceManager Public interfaces for managing companion devices. 
CompanionDeviceManager.Callback Callback for applications to receive updates about and the outcome of AssociationRequest issued via associate() call. 
CompanionDeviceService A service that receives calls from the system with device events. 
CompanionException CompanionException can be thrown during the companion system data transfer process. 
Comparable<T> This interface imposes a total ordering on the objects of each class that implements it. 
Comparator<T> A comparison function, which imposes a total ordering on some collection of objects. 
ComparisonFailure This class was deprecated in API level 16. use org.junit.ComparisonFailure 
Compiler Does nothing on Android. 
CompletableFuture<T> A Future that may be explicitly completed (setting its value and status), and may be used as a CompletionStage, supporting dependent functions and actions that trigger upon its completion. 
CompletableFuture.AsynchronousCompletionTask A marker interface identifying asynchronous tasks produced by async methods. 
CompletionException Exception thrown when an error or other exception is encountered in the course of completing a result or task. 
CompletionHandler<V, A> A handler for consuming the result of an asynchronous I/O operation. 
CompletionInfo Information about a single text completion that an editor has reported to an input method. 
CompletionService<V> A service that decouples the production of new asynchronous tasks from the consumption of the results of completed tasks. 
CompletionStage<T> A stage of a possibly asynchronous computation, that performs an action or computes a value when another CompletionStage completes. 
ComponentCallbacks The set of callback APIs that are common to all application components (Activity, Service, ContentProvider, and Application). 
ComponentCallbacks2 Extended ComponentCallbacks interface with a new callback for finer-grained memory management. 
ComponentCaller Represents the app that launched the component. 
ComponentInfo Base class containing information common to all application components (ActivityInfo, ServiceInfo). 
ComponentName Identifier for a specific application component (Activity, Service, BroadcastReceiver, or ContentProvider) that is available. 
ComposePathEffect  
ComposeShader A subclass of shader that returns the composition of two other shaders, combined by an Xfermode subclass. 
CompoundButton

A button with two states, checked and unchecked. 

CompoundButton.OnCheckedChangeListener Interface definition for a callback to be invoked when the checked state of a compound button changed. 
ConcurrentHashMap<K, V> A hash table supporting full concurrency of retrievals and high expected concurrency for updates. 
ConcurrentHashMap.KeySetView<K, V> A view of a ConcurrentHashMap as a Set of keys, in which additions may optionally be enabled by mapping to a common value. 
ConcurrentLinkedDeque<E> An unbounded concurrent deque based on linked nodes. 
ConcurrentLinkedQueue<E> An unbounded thread-safe queue based on linked nodes. 
ConcurrentMap<K, V> A Map providing thread safety and atomicity guarantees. 
ConcurrentModificationException This exception may be thrown by methods that have detected concurrent modification of an object when such modification is not permissible. 
ConcurrentNavigableMap<K, V> A ConcurrentMap supporting NavigableMap operations, and recursively so for its navigable sub-maps. 
ConcurrentSkipListMap<K, V> A scalable concurrent ConcurrentNavigableMap implementation. 
ConcurrentSkipListSet<E> A scalable concurrent NavigableSet implementation based on a ConcurrentSkipListMap
Condition The current condition of an AutomaticZenRule, provided by the app that owns the rule. 
Condition Condition factors out the Object monitor methods (wait, notify and notifyAll) into distinct objects to give the effect of having multiple wait-sets per object, by combining them with the use of arbitrary Lock implementations. 
ConditionProviderService This class was deprecated in API level 29. Instead of using an automatically bound service, use NotificationManager.setAutomaticZenRuleState(String, Condition) to tell the system about the state of your rule. In order to maintain a link from Settings to your rule configuration screens, provide a configuration activity that handles NotificationManager.ACTION_AUTOMATIC_ZEN_RULE on your AutomaticZenRule via AutomaticZenRule.setConfigurationActivity(ComponentName). 
ConditionVariable Class that implements the condition variable locking paradigm. 
Conference Represents a conference call which can contain any number of Connection objects. 
Conferenceable Interface used to identify entities with which another entity can participate in a conference call with. 
Config This class was deprecated in API level 14. This class is not useful, it just returns the same value for all constants, and has always done this. Do not use it. 
ConfigParser Utility class for building PasspointConfiguration from an installation file. 
Configuration This class describes all device configuration information that can impact the resources the application retrieves. 
ConfigurationInfo Information you can retrieve about hardware configuration preferences declared by an application. 
ConfigurationStats Represents the usage statistics of a device Configuration for a specific time range. 
ConfirmationAlreadyPresentingException This exception is thrown when presenting a prompt fails because another prompt is already being presented. 
ConfirmationCallback Callback class used when signaling that a prompt is no longer being presented. 
ConfirmationNotAvailableException This exception is thrown when presenting a prompt fails because the environment lacks facilities for showing confirmations. 
ConfirmationPrompt Class used for displaying confirmation prompts. 
ConfirmationPrompt.Builder A builder that collects arguments, to be shown on the system-provided confirmation prompt. 
ConnectEvent A class that represents a TCP connect event initiated through the standard network stack. 
ConnectException Signals that an error occurred while attempting to connect a socket to a remote address and port. 
Connection Represents a phone call or connection to a remote endpoint that carries voice and/or video traffic. 
Connection

A connection (session) with a specific database. 

Connection.RttModifyStatus Provides constants to represent the results of responses to session modify requests sent via Call#sendRttRequest() 
Connection.RttTextStream Provides methods to read and write RTT data to/from the in-call app. 
Connection.VideoProvider Provides a means of controlling the video session associated with a Connection
ConnectionEvent

An Event object that provides information about the source of a connection-related event. 

ConnectionEventListener

An object that registers to be notified of events generated by a PooledConnection object. 

ConnectionlessHandwritingCallback Interface to receive the result of starting a connectionless stylus handwriting session using one of InputMethodManager#startConnectionlessStylusHandwriting(View, CursorAnchorInfo, Executor,ConnectionlessHandwritingCallback), InputMethodManager.startConnectionlessStylusHandwritingForDelegation(android.view.View, android.view.inputmethod.CursorAnchorInfo, java.util.concurrent.Executor, android.view.inputmethod.ConnectionlessHandwritingCallback), or InputMethodManager.startConnectionlessStylusHandwritingForDelegation(android.view.View, android.view.inputmethod.CursorAnchorInfo, java.lang.String, java.util.concurrent.Executor, android.view.inputmethod.ConnectionlessHandwritingCallback)
ConnectionMigrationOptions A class configuring the HTTP connection migration functionality. 
ConnectionMigrationOptions.Builder Builder for ConnectionMigrationOptions
ConnectionPendingException Unchecked exception thrown when an attempt is made to connect a SocketChannel for which a non-blocking connection operation is already in progress. 
ConnectionPoolDataSource A factory for PooledConnection objects. 
ConnectionRequest Simple data container encapsulating a request to some entity to create a new Connection
ConnectionService An abstract service that should be implemented by any apps which either:
  1. Can make phone calls (VoIP or otherwise) and want those calls to be integrated into the built-in phone app. 
ConnectivityDiagnosticsManager Class that provides utilities for collecting network connectivity diagnostics information. 
ConnectivityDiagnosticsManager.ConnectivityDiagnosticsCallback Abstract base class for Connectivity Diagnostics callbacks. 
ConnectivityDiagnosticsManager.ConnectivityReport Class that includes connectivity information for a specific Network at a specific time. 
ConnectivityDiagnosticsManager.DataStallReport Class that includes information for a suspected data stall on a specific Network 
ConnectivityManager Class that answers queries about the state of network connectivity. 
ConnectivityManager.NetworkCallback Base class for NetworkRequest callbacks. 
ConnectivityManager.OnNetworkActiveListener Callback for use with ConnectivityManager#addDefaultNetworkActiveListener to find out when the system default network has gone in to a high power state. 
ConnectTimeoutException This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
Console Methods to access the character-based console device, if any, associated with the current Java virtual machine. 
ConsoleHandler This Handler publishes log records to System.err
ConsoleMessage Public class representing a JavaScript console message from WebCore. 
ConsoleMessage.MessageLevel  
ConstantCallSite A ConstantCallSite is a CallSite whose target is permanent, and can never be changed. 
ConstrainedFieldPosition Represents a span of a string containing a given field. 
Constructor<T> Constructor provides information about, and access to, a single constructor for a class. 
Consumer<T> Represents an operation that accepts a single input argument and returns no result. 
ConsumerIrManager Class that operates consumer infrared on the device. 
ConsumerIrManager.CarrierFrequencyRange Represents a range of carrier frequencies (inclusive) on which the infrared transmitter can transmit 
Contacts This class was deprecated in API level 5. The APIs have been superseded by ContactsContract. The newer APIs allow access multiple accounts and support aggregation of similar contacts. These APIs continue to work but will only return data for the first Google account created, which matches the original behavior. 
Contacts.ContactMethods This class was deprecated in API level 5. see ContactsContract 
Contacts.ContactMethodsColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.Extensions This class was deprecated in API level 5. see ContactsContract 
Contacts.ExtensionsColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.GroupMembership This class was deprecated in API level 5. see ContactsContract 
Contacts.Groups This class was deprecated in API level 5. see ContactsContract 
Contacts.GroupsColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.Intents This class was deprecated in API level 5. see ContactsContract 
Contacts.Intents.Insert This class was deprecated in API level 5. see ContactsContract 
Contacts.Intents.UI This class was deprecated in API level 5. Do not use. This is not supported. 
Contacts.OrganizationColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.Organizations This class was deprecated in API level 5. see ContactsContract 
Contacts.People This class was deprecated in API level 5. see ContactsContract 
Contacts.People.ContactMethods This class was deprecated in API level 5. see ContactsContract 
Contacts.People.Extensions This class was deprecated in API level 5. see ContactsContract 
Contacts.People.Phones This class was deprecated in API level 5. see ContactsContract 
Contacts.PeopleColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.Phones This class was deprecated in API level 5. see ContactsContract 
Contacts.PhonesColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.Photos This class was deprecated in API level 5. see ContactsContract 
Contacts.PhotosColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.PresenceColumns This interface was deprecated in API level 5. see ContactsContract 
Contacts.Settings This class was deprecated in API level 5. see ContactsContract 
Contacts.SettingsColumns This interface was deprecated in API level 5. see ContactsContract 
ContactsContract

The contract between the contacts provider and applications. 

ContactsContract.AggregationExceptions

Constants for the contact aggregation exceptions table, which contains aggregation rules overriding those used by automatic aggregation. 

ContactsContract.BaseSyncColumns Generic columns for use by sync adapters. 
ContactsContract.CommonDataKinds Container for definitions of common data types stored in the ContactsContract.Data table. 
ContactsContract.CommonDataKinds.BaseTypes The base types that all "Typed" data kinds support. 
ContactsContract.CommonDataKinds.Callable

Convenient functionalities for "callable" data. 

ContactsContract.CommonDataKinds.CommonColumns Columns common across the specific types. 
ContactsContract.CommonDataKinds.Contactables A special class of data items, used to refer to types of data that can be used to attempt to start communicating with a person (Phone and Email). 
ContactsContract.CommonDataKinds.Email

A data kind representing an email address. 

ContactsContract.CommonDataKinds.Event

A data kind representing an event. 

ContactsContract.CommonDataKinds.GroupMembership

Group Membership. 

ContactsContract.CommonDataKinds.Identity A data kind representing an Identity related to the contact. 
ContactsContract.CommonDataKinds.Im This class was deprecated in API level 35. This field may not be well supported by some contacts apps and is discouraged to use. 
ContactsContract.CommonDataKinds.Nickname

A data kind representing the contact's nickname. 

ContactsContract.CommonDataKinds.Note

Notes about the contact. 

ContactsContract.CommonDataKinds.Organization

A data kind representing an organization. 

ContactsContract.CommonDataKinds.Phone

A data kind representing a telephone number. 

ContactsContract.CommonDataKinds.Photo

A data kind representing a photo for the contact. 

ContactsContract.CommonDataKinds.Relation

A data kind representing a relation. 

ContactsContract.CommonDataKinds.SipAddress This class was deprecated in API level 35. This field may not be well supported by some contacts apps and is discouraged to use. 
ContactsContract.CommonDataKinds.StructuredName A data kind representing the contact's proper name. 
ContactsContract.CommonDataKinds.StructuredPostal

A data kind representing a postal addresses. 

ContactsContract.CommonDataKinds.Website

A data kind representing a website related to the contact. 

ContactsContract.ContactNameColumns Contact name and contact name metadata columns in the RawContacts table. 
ContactsContract.ContactOptionsColumns Columns of ContactsContract.Contacts that track the user's preferences for, or interactions with, the contact. 
ContactsContract.Contacts Constants for the contacts table, which contains a record per aggregate of raw contacts representing the same person. 
ContactsContract.Contacts.AggregationSuggestions

A read-only sub-directory of a single contact aggregate that contains all aggregation suggestions (other contacts). 

ContactsContract.Contacts.AggregationSuggestions.Builder A convenience builder for aggregation suggestion content URIs. 
ContactsContract.Contacts.Data A sub-directory of a single contact that contains all of the constituent raw contact ContactsContract.Data rows. 
ContactsContract.Contacts.Entity

A sub-directory of a contact that contains all of its ContactsContract.RawContacts as well as ContactsContract.Data rows. 

ContactsContract.Contacts.Photo A read-only sub-directory of a single contact that contains the contact's primary photo. 
ContactsContract.ContactsColumns Columns of ContactsContract.Contacts that refer to intrinsic properties of the contact, as opposed to the user-specified options found in ContactOptionsColumns
ContactsContract.ContactStatusColumns  
ContactsContract.Data

Constants for the data table, which contains data points tied to a raw contact. 

ContactsContract.DataColumns Columns in the Data table. 
ContactsContract.DataColumnsWithJoins Combines all columns returned by ContactsContract.Data table queries. 
ContactsContract.DataUsageFeedback This class was deprecated in API level 29. Contacts affinity information is no longer supported as of Android version Build.VERSION_CODES.Q. Both update and delete calls are always ignored. 
ContactsContract.DataUsageStatColumns Columns in the Data_Usage_Stat table 
ContactsContract.DeletedContacts Constants for the deleted contact table. 
ContactsContract.DeletedContactsColumns  
ContactsContract.Directory A Directory represents a contacts corpus, e.g. Local contacts, Google Apps Global Address List or Corporate Global Address List. 
ContactsContract.DisplayNameSources Types of data used to produce the display name for a contact. 
ContactsContract.DisplayPhoto Helper class for accessing full-size photos by photo file ID. 
ContactsContract.FullNameStyle Constants for various styles of combining given name, family name etc into a full name. 
ContactsContract.Groups Constants for the groups table. 
ContactsContract.GroupsColumns  
ContactsContract.Intents Contains helper classes used to create or manage Intents that involve contacts. 
ContactsContract.Intents.Insert Convenience class that contains string constants used to create contact Intents
ContactsContract.PhoneLookup A table that represents the result of looking up a phone number, for example for caller ID. 
ContactsContract.PhoneLookupColumns  
ContactsContract.PhoneticNameStyle Constants for various styles of capturing the pronunciation of a person's name. 
ContactsContract.PinnedPositions

Contact-specific information about whether or not a contact has been pinned by the user at a particular position within the system contact application's user interface. 

ContactsContract.Presence This class was deprecated in API level 5. This old name was never meant to be made public. Do not use. 
ContactsContract.PresenceColumns Additional data mixed in with StatusColumns to link back to specific ContactsContract.Data#_ID entries. 
ContactsContract.Profile

Constants for the user's profile data, which is represented as a single contact on the device that represents the user. 

ContactsContract.ProfileSyncState A table provided for sync adapters to use for storing private sync state data for the user's personal profile. 
ContactsContract.ProviderStatus API for inquiring about the general status of the provider. 
ContactsContract.QuickContact Helper methods to display QuickContact dialogs that display all the information belonging to a specific Contacts entry. 
ContactsContract.RawContacts Constants for the raw contacts table, which contains one row of contact information for each person in each synced account. 
ContactsContract.RawContacts.Data A sub-directory of a single raw contact that contains all of its ContactsContract.Data rows. 
ContactsContract.RawContacts.DisplayPhoto

A sub-directory of a single raw contact that represents its primary display photo. 

ContactsContract.RawContacts.Entity

A sub-directory of a single raw contact that contains all of its ContactsContract.Data rows. 

ContactsContract.RawContactsColumns  
ContactsContract.RawContactsEntity

Constants for the raw contacts entities table, which can be thought of as an outer join of the raw_contacts table with the data table. 

ContactsContract.SearchSnippets Additional column returned by Contacts.CONTENT_FILTER_URI explaining why the filter matched the contact. 
ContactsContract.Settings

Contacts-specific settings for various Account's. 

ContactsContract.SettingsColumns  
ContactsContract.SimAccount A parcelable class encapsulating account data for contacts that originate from a SIM card. 
ContactsContract.SimContacts Class containing utility methods around determine what accounts in the ContactsProvider are related to the SIM cards in the device. 
ContactsContract.StatusColumns Social status update columns. 
ContactsContract.StatusUpdates

A status update is linked to a ContactsContract.Data row and captures the user's latest status update via the corresponding source, e.g. 

ContactsContract.SyncColumns Columns that appear when each row of a table belongs to a specific account, including sync information that an account may need. 
ContactsContract.SyncState A table provided for sync adapters to use for storing private sync state data for contacts. 
ContentCaptureCondition Defines a condition for when content capture should be allowed. 
ContentCaptureContext Context associated with a ContentCaptureSession - see ContentCaptureManager for more info. 
ContentCaptureContext.Builder Builder for ContentCaptureContext objects. 
ContentCaptureManager

Provides additional ways for apps to integrate with the content capture subsystem. 

ContentCaptureSession Session used when notifying the Android system about events associated with views. 
ContentCaptureSessionId Identifier for a Content Capture session. 
ContentHandler The abstract class ContentHandler is the superclass of all classes that read an Object from a URLConnection
ContentHandler Receive notification of the logical content of a document. 
ContentHandlerFactory This interface defines a factory for content handlers. 
ContentInfo Holds all the relevant data for a request to View#performReceiveContent
ContentInfo.Builder Builder for ContentInfo
ContentObservable A specialization of Observable for ContentObserver that provides methods for sending notifications to a list of ContentObserver objects. 
ContentObserver Receives call backs for changes to content. 
ContentProvider Content providers are one of the primary building blocks of Android applications, providing content to applications. 
ContentProvider.CallingIdentity Opaque token representing the identity of an incoming IPC. 
ContentProvider.PipeDataWriter<T> Interface to write a stream of data to a pipe. 
ContentProviderClient The public interface object used to interact with a specific ContentProvider
ContentProviderOperation Represents a single operation to be performed as part of a batch of operations. 
ContentProviderOperation.Builder Used to add parameters to a ContentProviderOperation
ContentProviderResult Contains the result of the application of a ContentProviderOperation
ContentQueryMap Caches the contents of a cursor into a Map of String->ContentValues and optionally keeps the cache fresh by registering for updates on the content backing the cursor. 
ContentResolver This class provides applications access to the content model. 
ContentResolver.MimeTypeInfo Detailed description of a specific MIME type, including an icon and label that describe the type. 
ContentUris Utility methods useful for working with Uri objects that use the "content" (content://) scheme. 
ContentUriWithoutPermissionViolation  
ContentValues This class is used to store a set of values that the ContentResolver can process. 
Context Interface to global information about an application environment. 
Context.BindServiceFlags Specific flags used for bindService() call, which encapsulates a 64 bits long integer. 
ContextMenu Extension of Menu for context menus providing functionality to modify the header of the context menu. 
ContextMenu.ContextMenuInfo Additional information regarding the creation of the context menu. 
ContextParams This class represents rules around how a context being created via Context#createContext should behave. 
ContextParams.Builder Builder for creating a ContextParams
ContextThemeWrapper A context wrapper that allows you to modify or replace the theme of the wrapped context. 
ContextWrapper Proxying implementation of Context that simply delegates all of its calls to another Context. 
Control Represents a physical object that can be represented by a ControlTemplate and whose properties may be modified through a ControlAction
Control.StatefulBuilder Builder class for Control that contains state information. 
Control.StatelessBuilder Builder class for Control
ControlAction An abstract action indicating a user interaction with a Control
ControlButton Button element for ControlTemplate
ControlsProviderService Service implementation allowing applications to contribute controls to the System UI. 
ControlTemplate An abstract input template for a Control
ConversationAction Represents the action suggested by a TextClassifier on a given conversation. 
ConversationAction.Builder Builder class to construct ConversationAction
ConversationActions Represents a list of actions suggested by a TextClassifier on a given conversation. 
ConversationActions.Message Represents a message in the conversation. 
ConversationActions.Message.Builder Builder class to construct a Message 
ConversationActions.Request A request object for generating conversation action suggestions. 
ConversationActions.Request.Builder Builder object to construct the Request object. 
ConversationStatus  
ConversationStatus.Builder  
CookieHandler A CookieHandler object provides a callback mechanism to hook up a HTTP state management policy implementation into the HTTP protocol handler. 
CookieManager Manages the cookies used by an application's WebView instances. 
CookieManager CookieManager provides a concrete implementation of CookieHandler, which separates the storage of cookies from the policy surrounding accepting and rejecting cookies. 
CookiePolicy CookiePolicy implementations decide which cookies should be accepted and which should be rejected. 
CookieStore A CookieStore object represents a storage for cookie. 
CookieSyncManager This class was deprecated in API level 21. The WebView now automatically syncs cookies as necessary. You no longer need to create or use the CookieSyncManager. To manually force a sync you can use the CookieManager method CookieManager#flush which is a synchronous replacement for sync(). 
CopticCalendar Implement the Coptic calendar system. 
CopyOnWriteArrayList<E> A thread-safe variant of ArrayList in which all mutative operations (add, set, and so on) are implemented by making a fresh copy of the underlying array. 
CopyOnWriteArraySet<E> A Set that uses an internal CopyOnWriteArrayList for all of its operations. 
CopyOption An object that configures how to copy or move a file. 
CoreConnectionPNames This interface was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
CornerPathEffect  
CorrectionInfo Information about a single text correction that an editor has reported to an input method. 
CountDownLatch A synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes. 
CountDownTimer Schedule a countdown until a time in the future, with regular notifications on intervals along the way. 
CountedCompleter<T> A ForkJoinTask with a completion action performed when triggered and there are no remaining pending actions. 
CpuUsageInfo CPU usage information per core. 
CRC32 A class that can be used to compute the CRC-32 of a data stream. 
CRC32C A class that can be used to compute the CRC-32C of a data stream. 
CreateCredentialException Represents an error encountered during the CredentialManager#createCredential(Context, CreateCredentialRequest, CancellationSignal, Executor, OutcomeReceiver) operation. 
CreateCredentialRequest A request to register a specific type of user credential, potentially launching UI flows to collect user consent and any other operation needed. 
CreateCredentialRequest Request for creating a credential. 
CreateCredentialRequest.Builder A builder for CreateCredentialRequest
CreateCredentialResponse A response object that encapsulates the result of a successful credential creation execution. 
CreateEntry An entry to be shown on the UI. 
Credential Represents a user credential that can be used to authenticate to your app. 
Credential Class representing Credential subtree in the PerProviderSubscription (PPS) Management Object (MO) tree. 
Credential.CertificateCredential Certificate based credential. 
Credential.SimCredential SIM (Subscriber Identify Module) based credential. 
Credential.UserCredential Username-password based credential. 
CredentialDataRequest An object representing a request for credential data. 
CredentialDataRequest.Builder A builder for CredentialDataRequest
CredentialDataResult An object that contains the result of retrieving data from a credential. 
CredentialDataResult.Entries A class for representing data elements returned. 
CredentialDescription Represents the type and contained data fields of a Credential
CredentialEntry A credential entry that is to be displayed on the account selector that is presented to the user. 
CredentialManager Manages user authentication flows. 
CredentialOption Information about a specific type of credential to be requested during a CredentialManager.getCredential(Context, GetCredentialRequest, CancellationSignal, Executor, OutcomeReceiver) operation. 
CredentialOption.Builder A builder for CredentialOption
CredentialProtectedWhileLockedViolation Subclass of Violation that is used when a process accesses filesystem paths stored in credential protected storage areas while the user is locked. 
CredentialProviderService Service to be extended by credential providers, in order to return user credentials to the framework. 
Credentials A class for representing UNIX credentials passed via ancillary data on UNIX domain sockets. 
Criteria This class was deprecated in API level 34. Criteria based APIs are deprecated because they cannot fully capture the complexity of location providers, and encourage bad development practices. Prefer to explicit select the location provider of interest (LocationManager#FUSED_PROVIDER, etc), rather than relying on Criteria. 
CriticalNative An ART runtime built-in optimization for native methods to speed up JNI transitions: Methods that are annotated with @CriticalNative use the fastest available JNI transitions from managed code to the native code and back. 
CRL This class is an abstraction of certificate revocation lists (CRLs) that have different formats but important common uses. 
CRLException CRL (Certificate Revocation List) Exception. 
CRLReason The CRLReason enumeration specifies the reason that a certificate is revoked, as defined in RFC 5280: Internet X.509 Public Key Infrastructure Certificate and CRL Profile
CRLSelector A selector that defines a set of criteria for selecting CRLs. 
CrossProcessCursor A cross process cursor is an extension of a Cursor that also supports usage from remote processes. 
CrossProcessCursorWrapper Cursor wrapper that implements CrossProcessCursor
CrossProfileApps Class for handling cross profile operations. 
CryptoPrimitive An enumeration of cryptographic primitives. 
Currency A class encapsulating a currency, as defined by ISO 4217. 
Currency Represents a currency. 
Currency.CurrencyUsage Currency Usage used for Decimal Format 
CurrencyAmount An amount of currency, consisting of a Number and a Currency. 
CurrencyPluralInfo This class represents the information needed by DecimalFormat to format currency plural, such as "3.00 US dollars" or "1.00 US dollar". 
CurrencyPrecision A class that defines a rounding strategy parameterized by a currency to be used when formatting numbers in NumberFormatter. 
Cursor This interface provides random read-write access to the result set returned by a database query. 
CursorAdapter Adapter that exposes data from a Cursor to a ListView widget. 
CursorAnchorInfo Positional information about the text insertion point and characters in the composition string. 
CursorAnchorInfo.Builder Builder for CursorAnchorInfo
CursorIndexOutOfBoundsException An exception indicating that a cursor is out of bounds. 
CursorJoiner Does a join on two cursors using the specified columns. 
CursorJoiner.Result The result of a call to next(). 
CursorLoader This class was deprecated in API level 28. Use the Support Library CursorLoader 
CursorTreeAdapter An adapter that exposes data from a series of Cursors to an ExpandableListView widget. 
CursorWindow A buffer containing multiple cursor rows. 
CursorWindowAllocationException This exception is thrown when a CursorWindow couldn't be allocated, most probably due to memory not being available. 
CursorWrapper Wrapper class for Cursor that delegates all calls to the actual cursor object. 
CustomAudience Represents the information necessary for a custom audience to participate in ad selection. 
CustomAudience.Builder Builder for CustomAudience objects. 
CustomAudienceManager CustomAudienceManager provides APIs for app and ad-SDKs to join / leave custom audiences. 
CustomDescription Defines a custom description for the autofill save UI. 
CustomDescription.Builder Builder for CustomDescription objects. 
CustomPrinterIconCallback Callback for PrinterDiscoverySession#onRequestCustomPrinterIcon
CustomViolation  
CycleInterpolator Repeats the animation for a specified number of cycles. 
CyclicBarrier A synchronization aid that allows a set of threads to all wait for each other to reach a common barrier point. 
CyclingPedalingCadenceRecord Captures the user's cycling pedaling cadence. 
CyclingPedalingCadenceRecord.Builder Builder class for CyclingPedalingCadenceRecord 
CyclingPedalingCadenceRecord.CyclingPedalingCadenceRecordSample Represents a single measurement of the cycling pedaling cadence. 

D

DashPathEffect  
DatabaseErrorHandler An interface to let apps define an action to take when database corruption is detected. 
DatabaseMetaData Comprehensive information about the database as a whole. 
DatabaseUtils Static utility methods for dealing with databases and Cursors. 
DatabaseUtils.InsertHelper This class was deprecated in API level 17. Use SQLiteStatement instead. 
DataFailCause DataFailCause collects data connection failure causes code from different sources. 
DataFormatException Signals that a data format error has occurred. 
DatagramChannel A selectable channel for datagram-oriented sockets. 
DatagramPacket This class represents a datagram packet. 
DatagramSocket This class represents a socket for sending and receiving datagram packets. 
DatagramSocketImpl Abstract datagram and multicast socket implementation base class. 
DatagramSocketImplFactory This interface defines a factory for datagram socket implementations. 
DataInput The DataInput interface provides for reading bytes from a binary stream and reconstructing from them data in any of the Java primitive types. 
DataInputStream A data input stream lets an application read primitive Java data types from an underlying input stream in a machine-independent way. 
DataOrigin Specifies the contributing source/application of any Record 
DataOrigin.Builder  
DataOutput The DataOutput interface provides for converting data from any of the Java primitive types to a series of bytes and writing these bytes to a binary stream. 
DataOutputStream A data output stream lets an application write primitive Java data types to an output stream in a portable way. 
DataRemovalRequest Class used by apps to request the content capture service to remove data associated with LocusIds
DataRemovalRequest.Builder Builder for DataRemovalRequest objects. 
DataRemovalRequest.LocusIdRequest Representation of a request to remove data associated with a LocusId
Dataset

A Dataset object represents a group of fields (key / value pairs) used to autofill parts of a screen. 

Dataset.Builder A builder for Dataset objects. 
DataSetObservable A specialization of Observable for DataSetObserver that provides methods for sending notifications to a list of DataSetObserver objects. 
DataSetObserver Receives call backs when a data set has been changed, or made invalid. 
DataShareRequest Container class representing a request to share data with Content Capture service. 
DataShareWriteAdapter Adapter class used by apps to share data with the Content Capture service. 
DataSource

A factory for connections to the physical data source that this DataSource object represents. 

DataSpace DataSpace identifies three components of colors - standard (primaries), transfer and range. 
DataTruncation An exception thrown as a DataTruncation exception (on writes) or reported as a DataTruncation warning (on reads) when a data values is unexpectedly truncated for reasons other than its having execeeded MaxFieldSize
DatatypeConfigurationException

Indicates a serious configuration error. 

DatatypeConstants

Utility class to contain basic Datatype values as constants. 

DatatypeConstants.Field Type-safe enum class that represents six fields of the Duration class. 
DatatypeFactory

Factory that creates new javax.xml.datatype Objects that map XML to/from Java Objects. 

Date

A thin wrapper around a millisecond value that allows JDBC to identify this as an SQL DATE value. 

Date The class Date represents a specific instant in time, with millisecond precision. 
DateFormat [icu enhancement] ICU's replacement for DateFormat. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
DateFormat Utility class for producing strings with formatted date/time. 
DateFormat DateFormat is an abstract class for date/time formatting subclasses which formats and parses dates or time in a language-independent manner. 
DateFormat.BooleanAttribute boolean attributes 
DateFormat.Field The instances of this inner class are used as attribute keys and values in AttributedCharacterIterator that DateFormat.formatToCharacterIterator() method returns. 
DateFormat.Field Defines constants that are used as attribute keys in the AttributedCharacterIterator returned from DateFormat.formatToCharacterIterator and as field identifiers in FieldPosition
DateFormat.HourCycle Hour Cycle 
DateFormatSymbols [icu enhancement] ICU's replacement for DateFormatSymbols. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
DateFormatSymbols DateFormatSymbols is a public class for encapsulating localizable date-time formatting data, such as the names of the months, the names of the days of the week, and the time zone data. 
DateInterval This class represents date interval. 
DateIntervalFormat DateIntervalFormat is a class for formatting and parsing date intervals in a language-independent manner. 
DateIntervalFormat.FormattedDateInterval An immutable class containing the result of a date interval formatting operation. 
DateIntervalInfo DateIntervalInfo is a public class for encapsulating localizable date time interval patterns. 
DateIntervalInfo.PatternInfo PatternInfo class saves the first and second part of interval pattern, and whether the interval pattern is earlier date first. 
DateKeyListener For entering dates in a text field. 
DatePicker Provides a widget for selecting a date. 
DatePicker.OnDateChangedListener The callback used to indicate the user changed the date. 
DatePickerDialog A simple dialog containing an DatePicker
DatePickerDialog.OnDateSetListener The listener used to indicate the user has finished selecting a date. 
DateSorter Sorts dates into the following groups: Today Yesterday seven days ago one month ago older than a month ago 
DateTimeException Exception used to indicate a problem while calculating a date-time. 
DateTimeFormatter Formatter for printing and parsing date-time objects. 
DateTimeFormatterBuilder Builder to create date-time formatters. 
DateTimeKeyListener For entering dates and times in the same text field. 
DateTimeParseException An exception thrown when an error occurs during parsing. 
DateTimePatternGenerator This class provides flexible generation of date format patterns, like "yy-MM-dd". 
DateTimePatternGenerator.DisplayWidth Field display name width constants for getFieldDisplayName 
DateTimePatternGenerator.PatternInfo PatternInfo supplies output parameters for addPattern(...). 
DateTransformation Replaces a TextView child of a CustomDescription with the contents of a field that is expected to have a date value
DateUtils This class contains various date-related utilities for creating text for things like elapsed time and date ranges, strings for days of the week and months, and AM/PM text etc. 
DateValueSanitizer Sanitizes a date AutofillValue using a DateFormat
DayOfWeek A day-of-week, such as 'Tuesday'. 
DeadObjectException The object you are calling has died, because its hosting process no longer exists, or there has been a low-level binder error. 
DeadSystemException The core Android system has died and is going through a runtime restart. 
Debug Provides various debugging methods for Android applications, including tracing and allocation counts. 
Debug.InstructionCount This class was deprecated in API level 23. Instruction counting is no longer supported. 
Debug.MemoryInfo This class is used to retrieved various statistics about the memory mappings for this process. 
DebugUtils

Various utilities for debugging and logging. 

DecelerateInterpolator An interpolator where the rate of change starts out quickly and and then decelerates. 
DecimalFormat [icu enhancement] ICU's replacement for DecimalFormat. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
DecimalFormat DecimalFormat is a concrete subclass of NumberFormat that formats decimal numbers. 
DecimalFormatSymbols [icu enhancement] ICU's replacement for DecimalFormatSymbols. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
DecimalFormatSymbols This class represents the set of symbols (such as the decimal separator, the grouping separator, and so on) needed by DecimalFormat to format numbers. 
DecimalStyle Localized decimal style used in date and time formatting. 
DecisionLogic Generic Decision logic that could be provided by the buyer or seller. 
DeclHandler SAX2 extension handler for DTD declaration events. 
DefaultDatabaseErrorHandler Default class used to define the action to take when database corruption is reported by sqlite. 
DefaultHandler Default base class for SAX2 event handlers. 
DefaultHandler2 This class extends the SAX2 base handler class to support the SAX2 LexicalHandler, DeclHandler, and EntityResolver2 extensions. 
Deflater This class provides support for general purpose compression using the popular ZLIB compression library. 
DeflaterInputStream Implements an input stream filter for compressing data in the "deflate" compression format. 
DeflaterOutputStream This class implements an output stream filter for compressing data in the "deflate" compression format. 
Delayed A mix-in style interface for marking objects that should be acted upon after a given delay. 
DelayQueue<E extends Delayed> An unbounded blocking queue of Delayed elements, in which an element can only be taken when its delay has expired. 
DelegatedAdminReceiver Base class for delegated apps to handle callbacks related to their delegated capabilities. 
DelegateLastClassLoader A ClassLoader implementation that implements a delegate last lookup policy. 
DeleteGesture A sub-class of HandwritingGesture for deleting an area of text using single rectangle. 
DeleteGesture.Builder Builder for DeleteGesture
DeleteRangeGesture A subclass of HandwritingGesture for deleting a range of text by defining start and end rectangles. 
DeleteRangeGesture.Builder Builder for DeleteRangeGesture
DeletionRequest Deletion Request. 
DeletionRequest.Builder Builder for DeletionRequest objects. 
DeniedByServerException Exception thrown when the provisioning server or key server denies a certficate or license for a device. 
Deprecated A program element annotated @Deprecated is one that programmers are discouraged from using. 
Deque<E> A linear collection that supports element insertion and removal at both ends. 
DESedeKeySpec This class specifies a DES-EDE ("triple-DES") key. 
DESKeySpec This class specifies a DES key. 
Destroyable Objects such as credentials may optionally implement this interface to provide the capability to destroy its contents. 
DestroyFailedException Signals that a destroy operation failed. 
Device A physical device (such as phone, watch, scale, or chest strap) which captured associated health data point. 
Device.Builder  
DeviceAdminInfo This class is used to specify meta information of a device administrator component. 
DeviceAdminReceiver Base class for implementing a device administration component. 
DeviceAdminService Base class for a service that device owner/profile owners can optionally have. 
DeviceFilter<D extends Parcelable> A filter for companion devices of type D 
DeviceId The response returned from DeviceLockManager#getDeviceId on success. 
DeviceLockManager Manager used to interact with the system device lock service. 
DeviceNotAssociatedException An exception for a case when a given device was not associated to the calling app. 
DevicePolicyIdentifiers Class containing identifiers for policy APIs in DevicePolicyManager, for example they will be passed in PolicyUpdateReceiver#onPolicySetResult and PolicyUpdateReceiver#onPolicyChanged to communicate updates of a certain policy back to the admin. 
DevicePolicyManager Manages device policy and restrictions applied to the user of the device or apps running on the device. 
DevicePolicyManager.InstallSystemUpdateCallback Callback used in DevicePolicyManager.installSystemUpdate(ComponentName, Uri, Executor, InstallSystemUpdateCallback) to indicate that there was an error while trying to install an update. 
DevicePolicyManager.OnClearApplicationUserDataListener Callback used in DevicePolicyManager.clearApplicationUserData(ComponentName, String, Executor, OnClearApplicationUserDataListener) to indicate that the clearing of an application's user data is done. 
DevicePolicyResources Class containing the required identifiers to update device management resources. 
DevicePolicyResourcesManager Class containing required APIs to set, reset, and get device policy related resources. 
DeviceProductInfo Product-specific information about the display or the directly connected device on the display chain. 
DeviceStateSensorOrientationMap Immutable class that maps the device fold state to sensor orientation. 
DeviceStateSensorOrientationMap.Builder Builds a DeviceStateSensorOrientationMap object. 
DeviceTypes Device types for Control
DexClassLoader A class loader that loads classes from .jar and .apk files containing a classes.dex entry. 
DexFile Loads DEX files. 
DexFile.OptimizationInfo Encapsulates information about the optimizations performed on a dex file. 
DhcpInfo A simple object for retrieving the results of a DHCP request. 
DHGenParameterSpec This class specifies the set of parameters used for generating Diffie-Hellman (system) parameters for use in Diffie-Hellman key agreement. 
DHKey The interface to a Diffie-Hellman key. 
DHParameterSpec This class specifies the set of parameters used with the Diffie-Hellman algorithm, as specified in PKCS #3: Diffie-Hellman Key-Agreement Standard
DHPrivateKey The interface to a Diffie-Hellman private key. 
DHPrivateKeySpec This class specifies a Diffie-Hellman private key with its associated parameters. 
DHPublicKey The interface to a Diffie-Hellman public key. 
DHPublicKeySpec This class specifies a Diffie-Hellman public key with its associated parameters. 
DialerFilter This class was deprecated in API level 26. Use a custom view or layout to handle this functionality instead 
DialerKeyListener For dialing-only text entry

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. 
Dialog Base class for Dialogs. 
DialogFragment This class was deprecated in API level 28. Use the Support Library DialogFragment for consistent behavior across all devices and access to Lifecycle. 
DialogInterface Interface that defines a dialog-type class that can be shown, dismissed, or canceled, and may have buttons that can be clicked. 
DialogInterface.OnCancelListener Interface used to allow the creator of a dialog to run some code when the dialog is canceled. 
DialogInterface.OnClickListener Interface used to allow the creator of a dialog to run some code when an item on the dialog is clicked. 
DialogInterface.OnDismissListener Interface used to allow the creator of a dialog to run some code when the dialog is dismissed. 
DialogInterface.OnKeyListener Interface definition for a callback to be invoked when a key event is dispatched to this dialog. 
DialogInterface.OnMultiChoiceClickListener Interface used to allow the creator of a dialog to run some code when an item in a multi-choice dialog is clicked. 
DialogInterface.OnShowListener Interface used to allow the creator of a dialog to run some code when the dialog is shown. 
DialogPreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Dictionary<K, V> The Dictionary class is the abstract parent of any class, such as Hashtable, which maps keys to values. 
DigestException This is the generic Message Digest exception. 
DigestInputStream A transparent stream that updates the associated message digest using the bits going through the stream. 
DigestOutputStream A transparent stream that updates the associated message digest using the bits going through the stream. 
DigitalClock This class was deprecated in API level 17. It is recommended you use TextClock instead. 
DigitsKeyListener For digits-only text entry

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. 
DirectAction Represents an abstract action that can be perform on this app. 
DirectAction.Builder Builder for construction of DirectAction. 
DirectoryIteratorException Runtime exception thrown if an I/O error is encountered when iterating over the entries in a directory. 
DirectoryNotEmptyException Checked exception thrown when a file system operation fails because a directory is not empty. 
DirectoryStream<T> An object to iterate over the entries in a directory. 
DirectoryStream.Filter<T> An interface that is implemented by objects that decide if a directory entry should be accepted or filtered. 
DisconnectCause Describes the cause of a disconnected call. 
DisconnectCause Describes the cause of a disconnected call. 
DiscoveryRequest Encapsulates parameters for NsdManager#discoverServices
DiscoveryRequest.Builder The builder for creating new DiscoveryRequest objects. 
DiscoverySession A class representing a single publish or subscribe Aware session. 
DiscoverySessionCallback Base class for Aware session events callbacks. 
DiscretePathEffect  
DiskReadViolation  
DiskWriteViolation  
Display Provides information about the size and density of a logical display. 
Display.HdrCapabilities Encapsulates the HDR capabilities of a given display. 
Display.Mode A mode supported by a given display. 
DisplayContext Display context settings. 
DisplayContext.Type Type values for DisplayContext 
DisplayCutout Represents the area of the display that is not functional for displaying content. 
DisplayCutout.Builder A Builder class to construct a DisplayCutout instance. 
DisplayHash The DisplayHash used to validate information about what was present on screen. 
DisplayHashManager Manages DisplayHash requests. 
DisplayHashResultCallback Use when calling View#generateDisplayHash(String, Rect, Executor, DisplayHashResultCallback)
DisplayManager Manages the properties of attached displays. 
DisplayManager.DisplayListener Listens for changes in available display devices. 
DisplayMetrics A structure describing general information about a display, such as its size, density, and font scaling. 
DisplayOptions Represents all the display options that are supported by CLDR such as grammatical case, noun class, ... 
DisplayOptions.Builder Responsible for building DisplayOptions
DisplayOptions.Capitalization Represents all the capitalization options. 
DisplayOptions.DisplayLength Represents all the display lengths. 
DisplayOptions.GrammaticalCase Represents all the grammatical cases that are supported by CLDR. 
DisplayOptions.NameStyle Represents all the name styles. 
DisplayOptions.NounClass Represents all the grammatical noun classes that are supported by CLDR. 
DisplayOptions.PluralCategory Standard CLDR plural category constants. 
DisplayOptions.SubstituteHandling Represents all the substitute handlings. 
DisplayShape A class representing the shape of a display. 
DistanceRecord Captures distance travelled by the user since the last reading. 
DistanceRecord.Builder Builder class for DistanceRecord 
DngCreator The DngCreator class provides functions to write raw pixel data as a DNG file. 
DnsEvent A class that represents a DNS lookup event initiated through the standard network stack. 
DnsOptions A class configuring the host resolution functionality. 
DnsOptions.Builder Builder for DnsOptions
DnsOptions.StaleDnsOptions A class configuring the stale DNS functionality. 
DnsOptions.StaleDnsOptions.Builder Builder for StaleDnsOptions
DnsResolver Dns resolver class for asynchronous dns querying Note that if a client sends a query with more than 1 record in the question section but the remote dns server does not support this, it may not respond at all, leading to a timeout. 
DnsResolver.Callback<T> Base interface for answer callbacks 
DnsResolver.DnsException Class to represent DNS error 
DocTypeNotSupportedException Thrown if trying to create a credential with an unsupported document type. 
Document The Document interface represents the entire HTML or XML document. 
DocumentBuilder Defines the API to obtain DOM Document instances from an XML document. 
DocumentBuilderFactory Defines a factory API that enables applications to obtain a parser that produces DOM object trees from XML documents. 
DocumentChangeInfo Contains information about an individual change detected by an ObserverCallback
Documented If the annotation @Documented is present on the declaration of an annotation interface A, then any @A annotation on an element is considered part of the element's public contract. 
DocumentFragment DocumentFragment is a "lightweight" or "minimal" Document object. 
DocumentHandler This interface was deprecated in API level 9. This interface has been replaced by the SAX2 ContentHandler interface, which includes Namespace support. 
DocumentIdUtil A util class with methods for working with document ids. 
DocumentsContract Defines the contract between a documents provider and the platform. 
DocumentsContract.Document Constants related to a document, including Cursor column names and flags. 
DocumentsContract.Path Holds a path from a document to a particular document under it. 
DocumentsContract.Root Constants related to a root of documents, including Cursor column names and flags. 
DocumentsProvider Base class for a document provider. 
DocumentType Each Document has a doctype attribute whose value is either null or a DocumentType object. 
DomainCombiner Legacy security code; do not use. 
DomainLoadStoreParameter Configuration data that specifies the keystores in a keystore domain. 
DomainVerificationManager System service to access domain verification APIs. 
DomainVerificationUserState Contains the user selection state for a package. 
DOMConfiguration The DOMConfiguration interface represents the configuration of a document and maintains a table of recognized parameters. 
DOMError DOMError is an interface that describes an error. 
DOMErrorHandler DOMErrorHandler is a callback interface that the DOM implementation can call when reporting errors that happens while processing XML data, or when doing some other processing (e.g. validating a document). 
DOMException DOM operations only raise exceptions in "exceptional" circumstances, i.e., when an operation is impossible to perform (either for logical reasons, because data is lost, or because the implementation has become unstable). 
DOMImplementation The DOMImplementation interface provides a number of methods for performing operations that are independent of any particular instance of the document object model. 
DOMImplementationList The DOMImplementationList interface provides the abstraction of an ordered collection of DOM implementations, without defining or constraining how this collection is implemented. 
DOMImplementationLS DOMImplementationLS contains the factory methods for creating Load and Save objects. 
DOMImplementationSource This interface permits a DOM implementer to supply one or more implementations, based upon requested features and versions, as specified in . 
DOMLocator Indicates the position of a node in a source DOM, intended primarily for error reporting. 
DOMLocator DOMLocator is an interface that describes a location (e.g. 
DOMResult

Acts as a holder for a transformation result tree in the form of a Document Object Model (DOM) tree. 

DOMSource

Acts as a holder for a transformation Source tree in the form of a Document Object Model (DOM) tree. 

DOMStringList The DOMStringList interface provides the abstraction of an ordered collection of DOMString values, without defining or constraining how this collection is implemented. 
DosFileAttributes File attributes associated with a file in a file system that supports legacy "DOS" attributes. 
DosFileAttributeView A file attribute view that provides a view of the legacy "DOS" file attributes. 
Double The Double class wraps a value of the primitive type double in an object. 
Double2 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Double3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Double4 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
DoubleAccumulator One or more variables that together maintain a running double value updated using a supplied function. 
DoubleAdder One or more variables that together maintain an initially zero double sum. 
DoubleBinaryOperator Represents an operation upon two double-valued operands and producing a double-valued result. 
DoubleBuffer A double buffer. 
DoubleConsumer Represents an operation that accepts a single double-valued argument and returns no result. 
DoubleFunction<R> Represents a function that accepts a double-valued argument and produces a result. 
DoublePredicate Represents a predicate (boolean-valued function) of one double-valued argument. 
DoubleStream A sequence of primitive double-valued elements supporting sequential and parallel aggregate operations. 
DoubleStream.Builder A mutable builder for a DoubleStream
DoubleStream.DoubleMapMultiConsumer Represents an operation that accepts a double-valued argument and a DoubleConsumer, and returns no result. 
DoubleSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and average. 
DoubleSupplier Represents a supplier of double-valued results. 
DoubleToIntFunction Represents a function that accepts a double-valued argument and produces an int-valued result. 
DoubleToLongFunction Represents a function that accepts a double-valued argument and produces a long-valued result. 
DoubleUnaryOperator Represents an operation on a single double-valued operand that produces a double-valued result. 
DownloadableSubscription Information about a subscription which is downloadable to an eUICC using EuiccManager#downloadSubscription(DownloadableSubscription, boolean, PendingIntent) 
DownloadableSubscription.Builder  
DownloadCompletedInput The input data for IsolatedWorker.onDownloadCompleted(android.adservices.ondevicepersonalization.DownloadCompletedInput, android.os.OutcomeReceiver)
DownloadCompletedOutput The result returned by IsolatedWorker.onDownloadCompleted(android.adservices.ondevicepersonalization.DownloadCompletedInput, android.os.OutcomeReceiver)
DownloadCompletedOutput.Builder A builder for DownloadCompletedOutput 
DownloadListener  
DownloadManager The download manager is a system service that handles long-running HTTP downloads. 
DownloadManager.Query This class may be used to filter download manager queries. 
DownloadManager.Request This class contains all the information necessary to request a new download. 
DownloadProgressListener A optional listener class used by download clients to track progress. 
DownloadRequest Describes a request to download files over cell-broadcast. 
DownloadRequest.Builder  
DownloadStatusListener A optional listener class used by download clients to track progress. 
DragAndDropPermissions DragAndDropPermissions controls the access permissions for the content URIs associated with a DragEvent
DragEvent Represents an event that is sent out by the system at various times during a drag and drop operation. 
Drawable A Drawable is a general abstraction for "something that can be drawn." Most often you will deal with Drawable as the type of resource retrieved for drawing things to the screen; the Drawable class provides a generic API for dealing with an underlying visual resource that may take a variety of forms. 
Drawable.Callback Implement this interface if you want to create an animated drawable that extends Drawable
Drawable.ConstantState This abstract class is used by Drawables to store shared constant state and data between Drawables. 
DrawableContainer A helper class that contains several Drawables and selects which one to use. 
DrawableContainer.DrawableContainerState A ConstantState that can contain several Drawables. 
DrawableMarginSpan A span which adds a drawable and a padding to the paragraph it's attached to. 
DrawableWrapper Drawable container with only one child element. 
DrawFilter A DrawFilter subclass can be installed in a Canvas. 
DrbgParameters This class specifies the parameters used by a DRBG (Deterministic Random Bit Generator). 
DrbgParameters.Capability The reseedable and prediction resistance capabilities of a DRBG. 
DrbgParameters.Instantiation DRBG parameters for instantiation. 
DrbgParameters.NextBytes DRBG parameters for random bits generation. 
DrbgParameters.Reseed DRBG parameters for reseed. 
DreamService Extend this class to implement a custom dream (available to the user as a "Daydream"). 
Driver The interface that every driver class must implement. 
Driver SAX2 Driver that pulls events from XmlPullParser and converts them into SAX2 callbacks. 
DriverManager

The basic service for managing a set of JDBC drivers. 

DriverPropertyInfo

Driver properties for making a connection. 

DrmConvertedStatus This class was deprecated in API level 30. Please use MediaDrm 
DrmErrorEvent This class was deprecated in API level 30. Please use MediaDrm 
DrmEvent This class was deprecated in API level 30. Please use MediaDrm 
DrmInfo This class was deprecated in API level 30. Please use MediaDrm 
DrmInfoEvent This class was deprecated in API level 30. Please use MediaDrm 
DrmInfoRequest This class was deprecated in API level 30. Please use MediaDrm 
DrmInfoStatus This class was deprecated in API level 30. Please use MediaDrm 
DrmInitData Encapsulates initialization data required by a MediaDrm instance. 
DrmInitData.SchemeInitData Scheme initialization data. 
DrmManagerClient This class was deprecated in API level 30. Please use MediaDrm 
DrmManagerClient.OnErrorListener Interface definition for a callback that receives information about DRM framework errors. 
DrmManagerClient.OnEventListener Interface definition for a callback that receives information about DRM processing events. 
DrmManagerClient.OnInfoListener Interface definition for a callback that receives status messages and warnings during registration and rights acquisition. 
DrmRights This class was deprecated in API level 30. Please use MediaDrm 
DrmStore This class was deprecated in API level 30. Please use MediaDrm 
DrmStore.Action Defines actions that can be performed on rights-protected content. 
DrmStore.ConstraintsColumns Interface definition for the columns that represent DRM constraints. 
DrmStore.DrmObjectType Defines DRM object types. 
DrmStore.Playback Defines playback states for content. 
DrmStore.RightsStatus Defines status notifications for digital rights. 
DrmSupportInfo This class was deprecated in API level 30. Please use MediaDrm 
DrmUtils This class was deprecated in API level 30. Please use MediaDrm 
DrmUtils.ExtendedMetadataParser Utility that parses extended metadata embedded in DRM constraint information. 
DropBoxManager Enqueues chunks of data (from various sources -- application crashes, kernel log records, etc.). 
DropBoxManager.Entry A single entry retrieved from the drop box. 
DSAGenParameterSpec This immutable class specifies the set of parameters used for generating DSA parameters as specified in FIPS 186-3 Digital Signature Standard (DSS)
DSAKey The interface to a DSA public or private key. 
DSAKeyPairGenerator An interface to an object capable of generating DSA key pairs. 
DSAParameterSpec This class specifies the set of parameters used with the DSA algorithm. 
DSAParams Interface to a DSA-specific set of key parameters, which defines a DSA key family
DSAPrivateKey The standard interface to a DSA private key. 
DSAPrivateKeySpec This class specifies a DSA private key with its associated parameters. 
DSAPublicKey The interface to a DSA public key. 
DSAPublicKeySpec This class specifies a DSA public key with its associated parameters. 
DsmccRequest A request for DSM-CC from broadcast signal. 
DsmccResponse A response for DSM-CC from broadcast signal. 
DTDHandler Receive notification of basic DTD-related events. 
Dumpable Represents an object whose state can be dumped into a PrintWriter
DumpableContainer Represents a container that manages dumpables
DuplicateFormatFlagsException Unchecked exception thrown when duplicate flags are provided in the format specifier. 
Duration A time-based amount of time, such as '34.5 seconds'. 
Duration

Immutable representation of a time span as defined in the W3C XML Schema 1.0 specification. 

DynamicDrawableSpan Span that replaces the text it's attached to with a Drawable that can be aligned with the bottom or with the baseline of the surrounding text. 
DynamicLayout DynamicLayout is a text layout that updates itself as the text is edited. 
DynamicLayout.Builder Builder for dynamic layouts. 
DynamicRangeProfiles Immutable class with information about supported 10-bit dynamic range profiles. 
DynamicsProcessing DynamicsProcessing is an audio effect for equalizing and changing dynamic range properties of the sound. 
DynamicsProcessing.BandBase Base class for bands 
DynamicsProcessing.BandStage Base class for stages that hold bands 
DynamicsProcessing.Channel Class for Channel configuration parameters. 
DynamicsProcessing.Config Class for Config object, used by DynamicsProcessing to configure and update the audio effect. 
DynamicsProcessing.Config.Builder  
DynamicsProcessing.Eq Class for Equalizer stage 
DynamicsProcessing.EqBand Class for Equalizer Bands Equalizer bands have three controllable parameters: enabled/disabled, cutoffFrequency and gain 
DynamicsProcessing.Limiter Class for Limiter Stage Limiter is a single band compressor at the end of the processing chain, commonly used to protect the signal from overloading and distortion. 
DynamicsProcessing.Mbc Class for Multi-Band Compressor (MBC) stage 
DynamicsProcessing.MbcBand Class for Multi-Band compressor bands MBC bands have multiple controllable parameters: enabled/disabled, cutoffFrequency, attackTime, releaseTime, ratio, threshold, kneeWidth, noiseGateThreshold, expanderRatio, preGain and postGain. 
DynamicsProcessing.Stage base class for the different stages. 

E

E2eeContactKeysManager E2eeContactKeysManager provides access to the provider of end-to-end encryption contact keys. 
E2eeContactKeysManager.E2eeContactKey A parcelable class encapsulating other users' end to end encrypted contact key. 
E2eeContactKeysManager.E2eeSelfKey A parcelable class encapsulating self end to end encrypted contact key. 
EapAkaInfo EapAkaInfo represents data provided by the server during EAP AKA authentication 
EapAkaInfo.Builder This class can be used to incrementally construct an EapAkaInfo
EapInfo EapInfo represents data provided by the server during EAP authentication 
EapSessionConfig EapSessionConfig represents a container for EAP method configuration. 
EapSessionConfig.Builder This class can be used to incrementally construct an EapSessionConfig
EapSessionConfig.EapAkaConfig EapAkaConfig represents the configs needed for an EAP AKA session. 
EapSessionConfig.EapAkaOption EapAkaOption represents optional configurations for EAP AKA authentication. 
EapSessionConfig.EapAkaOption.Builder This class can be used to incrementally construct an EapAkaOption
EapSessionConfig.EapAkaPrimeConfig EapAkaPrimeConfig represents the configs needed for an EAP-AKA' session. 
EapSessionConfig.EapMethodConfig EapMethodConfig represents a generic EAP method configuration. 
EapSessionConfig.EapMsChapV2Config EapMsChapV2Config represents the configs needed for an EAP MSCHAPv2 session. 
EapSessionConfig.EapSimConfig EapSimConfig represents the configs needed for an EAP SIM session. 
EapSessionConfig.EapTtlsConfig EapTtlsConfig represents the configs needed for an EAP-TTLS session. 
EasyConnectStatusCallback Easy Connect (DPP) Status Callback. 
EasyEditSpan Provides an easy way to edit a portion of text. 
ECField This interface represents an elliptic curve (EC) finite field. 
ECFieldF2m This immutable class defines an elliptic curve (EC) characteristic 2 finite field. 
ECFieldFp This immutable class defines an elliptic curve (EC) prime finite field. 
ECGenParameterSpec This immutable class specifies the set of parameters used for generating elliptic curve (EC) domain parameters. 
ECKey The interface to an elliptic curve (EC) key. 
ECParameterSpec This immutable class specifies the set of domain parameters used with elliptic curve cryptography (ECC). 
ECPoint This immutable class represents a point on an elliptic curve (EC) in affine coordinates. 
ECPrivateKey The interface to an elliptic curve (EC) private key. 
ECPrivateKeySpec This immutable class specifies an elliptic curve private key with its associated parameters. 
ECPublicKey The interface to an elliptic curve (EC) public key. 
ECPublicKeySpec This immutable class specifies an elliptic curve public key with its associated parameters. 
EdDSAParameterSpec A class used to specify EdDSA signature and verification parameters. 
EdECKey An interface for an elliptic curve public/private key as defined by RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA)
EdECPoint An elliptic curve point used to specify keys as defined by RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA)
EdECPrivateKey An interface for an elliptic curve private key as defined by RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA)
EdECPrivateKeySpec A class representing elliptic curve private keys as defined in RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA), including the curve and other algorithm parameters. 
EdECPublicKey An interface for an elliptic curve public key as defined by RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA)
EdECPublicKeySpec A class representing elliptic curve public keys as defined in RFC 8032: Edwards-Curve Digital Signature Algorithm (EdDSA), including the curve and other algorithm parameters. 
EdgeEffect This class performs the graphical effect used at the edges of scrollable widgets when the user scrolls beyond the content bounds in 2D space. 
Editable This is the interface for text whose content and markup can be changed (as opposed to immutable text like Strings). 
Editable.Factory Factory used by TextView to create new Editables
EditingEndedEvent Event for an editing operation having ended. 
EditingEndedEvent.Builder Builder for EditingEndedEvent 
EditingSession Represents a session of media editing, for example, transcoding between formats, transmuxing or applying trimming or audio/video effects to a stream. 
EditorBoundsInfo Container of rectangular position related info for the Editor. 
EditorBoundsInfo.Builder Builder for EditorBoundsInfo
EditorInfo An EditorInfo describes several attributes of a text editing object that an input method is communicating with (typically an EditText), most importantly the type of text content it contains and the current cursor position. 
Edits Records lengths of string edits but not replacement text. 
Edits.Iterator Access to the list of edits. 
EditText A user interface element for entering and modifying text. 
EditTextPreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Effect

Effects are high-performance transformations that can be applied to image frames. 

EffectContext

An EffectContext keeps all necessary state information to run Effects within a Open GL ES 2.0 context. 

EffectFactory

The EffectFactory class defines the list of available Effects, and provides functionality to inspect and instantiate them. 

EffectUpdateListener Some effects may issue callbacks to inform the host of changes to the effect state. 
EGL  
EGL10  
EGL11  
EGL14 EGL 1.4 
EGL15 EGL 1.5 
EGLConfig Wrapper class for native EGLConfig objects. 
EGLConfig  
EGLContext Wrapper class for native EGLContext objects. 
EGLContext  
EGLDisplay Wrapper class for native EGLDisplay objects. 
EGLDisplay  
EGLExt EGL Extensions 
EGLImage Wrapper class for native EGLImage objects. 
EGLObjectHandle Base class for wrapped EGL objects. 
EGLSurface Wrapper class for native EGLSurface objects. 
EGLSurface  
EGLSync Wrapper class for native EGLSync objects. 
Element This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Element An XML element. 
Element The Element interface represents an element in an HTML or XML document. 
Element.Builder Builder class for producing complex elements with matching field and name pairs. 
Element.DataKind The special interpretation of the data if required. 
Element.DataType DataType represents the basic type information for a basic element. 
ElementListener Listens for the beginning and ending of elements. 
ElementType The constants of this enumerated class provide a simple classification of the syntactic locations where annotations may appear in a Java program. 
ElevationGainedRecord Captures the elevation gained by the user since the last reading. 
ElevationGainedRecord.Builder Builder class for ElevationGainedRecord 
EllipticCurve This immutable class holds the necessary values needed to represent an elliptic curve. 
EmbossMaskFilter  
EmergencyNumber A parcelable class that wraps and retrieves the information of number, service category(s) and country code for a specific emergency number. 
EmojiConsistency The set of emoji that should be drawn by the system with the default font for device consistency. 
EmptyStackException Thrown by methods in the Stack class to indicate that the stack is empty. 
EncodedKeySpec This class represents a public or private key in encoded format. 
EncoderProfiles Describes a set of encoding profiles for a given media (audio and/or video) profile. 
EncoderProfiles.AudioProfile Configuration for an audio encoder. 
EncoderProfiles.VideoProfile Configuration for a video encoder. 
EncryptedPrivateKeyInfo This class implements the EncryptedPrivateKeyInfo type as defined in PKCS #8. 
EncryptedTopic Encrypted form of Topic
EndElementListener Listens for the end of elements. 
EndTextElementListener Listens for the end of text elements. 
Energy Represents a unit of energy. 
EnterpriseGlobalSearchSession Provides a connection to the work profile's AppSearch databases that explicitly allow access from enterprise sessions. 
Entity A representation of a item using ContentValues. 
Entity This interface represents a known entity, either parsed or unparsed, in an XML document. 
Entity.NamedContentValues  
EntityIterator A specialization of Iterator that allows iterating over a collection of Entity objects. 
EntityReference EntityReference nodes may be used to represent an entity reference in the tree. 
EntityResolver Basic interface for resolving entities. 
EntityResolver2 Extended interface for mapping external entity references to input sources, or providing a missing external subset. 
Enum<E extends Enum<E>> This is the common base class of all Java language enumeration classes. 
EnumConstantNotPresentException Thrown when an application tries to access an enum constant by name and the enum type contains no constant with the specified name. 
Enumeration<E> An object that implements the Enumeration interface generates a series of elements, one at a time. 
EnumMap<K extends Enum<K>, V> A specialized Map implementation for use with enum type keys. 
EnumSet<E extends Enum<E>> A specialized Set implementation for use with enum types. 
Environment Provides access to environment variables. 
EnvironmentalReverb A sound generated within a room travels in many directions. 
EnvironmentalReverb.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the EnvironmentalReverb when a parameter value has changed. 
EnvironmentalReverb.Settings The Settings class regroups all environmental reverb parameters. 
EOFException Signals that an end of file or end of stream has been reached unexpectedly during input. 
EphemeralPublicKeyNotFoundException Thrown if the ephemeral public key was not found in the session transcript passed to IdentityCredential#getEntries(byte[], Map, byte[], byte[])
Equalizer An Equalizer is used to alter the frequency response of a particular music source or of the main output mix. 
Equalizer.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the Equalizer when a parameter value has changed. 
Equalizer.Settings The Settings class regroups all equalizer parameters. 
Era An era of the time-line. 
ErrnoException A checked exception thrown when Os methods fail. 
Error An Error is a subclass of Throwable that indicates serious problems that a reasonable application should not try to catch. 
ErrorHandler Basic interface for SAX error handlers. 
ErrorListener

To provide customized error handling, implement this interface and use the setErrorListener method to register an instance of the implementation with the Transformer

ErrorManager ErrorManager objects can be attached to Handlers to process any error that occurs on a Handler during Logging. 
ETC1 Methods for encoding and decoding ETC1 textures. 
ETC1Util Utility methods for using ETC1 compressed textures. 
ETC1Util.ETC1Texture A utility class encapsulating a compressed ETC1 texture. 
EthernetNetworkSpecifier A NetworkSpecifier used to identify ethernet interfaces. 
EthiopicCalendar Implement the Ethiopic calendar system. 
EuiccInfo Information about an eUICC chip/device. 
EuiccManager EuiccManager is the application interface to eUICCs, or eSIMs/embedded SIMs. 
Event Abstract class for metrics events. 
EventInput The input data for IsolatedWorker.onEvent(android.adservices.ondevicepersonalization.EventInput, android.os.OutcomeReceiver)
EventListener A tagging interface that all event listener interfaces must extend. 
EventListenerProxy<T extends EventListener> An abstract wrapper class for an EventListener class which associates a set of additional parameters with the listener. 
EventLog Access to the system diagnostic event record. 
EventLog.Event A previously logged event read from the logs. 
EventLogRecord Data to be logged in the EVENTS table. 
EventLogRecord.Builder A builder for EventLogRecord 
EventLogTags This class was deprecated in API level 9. This class is no longer functional. Use EventLog instead. 
EventLogTags.Description  
EventObject

The root class from which all event state objects shall be derived. 

EventOutput The result returned by IsolatedWorker#onEvent(EventInput, android.os.OutcomeReceiver)
EventOutput.Builder A builder for EventOutput 
EventStats Contains usage statistics for an event type for a specific time range. 
EventUrlProvider Generates event tracking URLs for a request. 
Exception The class Exception and its subclasses are a form of Throwable that indicates conditions that a reasonable application might want to catch. 
ExceptionInInitializerError Signals that an unexpected exception has occurred in a static initializer. 
Exchanger<V> A synchronization point at which threads can pair and swap elements within pairs. 
Executable A shared superclass for the common functionality of Method and Constructor
ExecuteInput The input data for IsolatedWorker#onExecute(ExecuteInput, android.os.OutcomeReceiver)
ExecuteOutput The result returned by IsolatedWorker#onExecute(ExecuteInput, android.os.OutcomeReceiver) in response to a call to OnDevicePersonalizationManager#execute(ComponentName, PersistableBundle, java.util.concurrent.Executor, OutcomeReceiver) from a client app. 
ExecuteOutput.Builder A builder for ExecuteOutput 
ExecutionException Exception thrown when attempting to retrieve the result of a task that aborted by throwing an exception. 
Executor An object that executes submitted Runnable tasks. 
ExecutorCompletionService<V> A CompletionService that uses a supplied Executor to execute tasks. 
Executors Factory and utility methods for Executor, ExecutorService, ScheduledExecutorService, ThreadFactory, and Callable classes defined in this package. 
ExecutorService An Executor that provides methods to manage termination and methods that can produce a Future for tracking progress of one or more asynchronous tasks. 
ExemptionMechanism This class provides the functionality of an exemption mechanism, examples of which are key recovery, key weakening, and key escrow
ExemptionMechanismException This is the generic ExemptionMechanism exception. 
ExemptionMechanismSpi This class defines the Service Provider Interface (SPI) for the ExemptionMechanism class. 
ExerciseCompletionGoal A goal which should be met to complete a PlannedExerciseStep
ExerciseCompletionGoal.ActiveCaloriesBurnedGoal An ExerciseCompletionGoal that requires a specified number of active calories to be burned. 
ExerciseCompletionGoal.DistanceGoal An ExerciseCompletionGoal that requires covering a specified distance. 
ExerciseCompletionGoal.DistanceWithVariableRestGoal An ExerciseCompletionGoal that requires covering a specified distance. 
ExerciseCompletionGoal.DurationGoal An ExerciseCompletionGoal that requires a specified duration to elapse. 
ExerciseCompletionGoal.RepetitionsGoal An ExerciseCompletionGoal that requires a specified number of repetitions to be completed. 
ExerciseCompletionGoal.StepsGoal An ExerciseCompletionGoal that requires completing a specified number of steps. 
ExerciseCompletionGoal.TotalCaloriesBurnedGoal An ExerciseCompletionGoal that requires a specified number of total calories to be burned. 
ExerciseCompletionGoal.UnknownGoal An ExerciseCompletionGoal that is unknown. 
ExerciseCompletionGoal.UnspecifiedGoal An ExerciseCompletionGoal that has no specific target metric. 
ExerciseLap Captures the time of a lap within exercise session. 
ExerciseLap.Builder Builder class for ExerciseLap 
ExercisePerformanceGoal A goal which should be aimed for during a PlannedExerciseStep
ExercisePerformanceGoal.AmrapGoal An ExercisePerformanceGoal that requires completing as many repetitions as possible. 
ExercisePerformanceGoal.CadenceGoal An ExercisePerformanceGoal that requires a target cadence range to be met during the associated PlannedExerciseStep
ExercisePerformanceGoal.HeartRateGoal An ExercisePerformanceGoal that requires a target heart rate range, in BPM, to be met during the associated PlannedExerciseStep
ExercisePerformanceGoal.PowerGoal An ExercisePerformanceGoal that requires a target power range to be met during the associated PlannedExerciseStep
ExercisePerformanceGoal.RateOfPerceivedExertionGoal An ExercisePerformanceGoal that requires a target RPE (rate of perceived exertion) to be met during the associated PlannedExerciseStep
ExercisePerformanceGoal.SpeedGoal An ExercisePerformanceGoal that requires a target speed range to be met during the associated PlannedExerciseStep
ExercisePerformanceGoal.UnknownGoal An ExercisePerformanceGoal that is unknown. 
ExercisePerformanceGoal.WeightGoal An ExercisePerformanceGoal that requires a target weight to be lifted during the associated PlannedExerciseStep
ExerciseRoute Route of the exercise session. 
ExerciseRoute.Location Point in the time and space. 
ExerciseRoute.Location.Builder Builder class for Location 
ExerciseSegment Represents particular exercise within exercise session (see ExerciseSessionRecord). 
ExerciseSegment.Builder Builder class for ExerciseSegment 
ExerciseSegmentType Identifier for exercise types, as returned by ExerciseSegment#getSegmentType()
ExerciseSessionRecord Captures exercise or a sequence of exercises. 
ExerciseSessionRecord.Builder Builder class for ExerciseSessionRecord 
ExerciseSessionType Identifier for exercise types, as returned by ExerciseSessionRecord#getExerciseType()
ExifInterface This is a class for reading and writing Exif tags in various image file formats. 
ExpandableListActivity This class was deprecated in API level 30. Use RecyclerView or use ExpandableListView directly 
ExpandableListAdapter An adapter that links a ExpandableListView with the underlying data. 
ExpandableListView A view that shows items in a vertically scrolling two-level list. 
ExpandableListView.ExpandableListContextMenuInfo Extra menu information specific to an ExpandableListView provided to the View.OnCreateContextMenuListener.onCreateContextMenu(ContextMenu, View, ContextMenuInfo) callback when a context menu is brought up for this AdapterView. 
ExpandableListView.OnChildClickListener Interface definition for a callback to be invoked when a child in this expandable list has been clicked. 
ExpandableListView.OnGroupClickListener Interface definition for a callback to be invoked when a group in this expandable list has been clicked. 
ExpandableListView.OnGroupCollapseListener Used for being notified when a group is collapsed 
ExpandableListView.OnGroupExpandListener Used for being notified when a group is expanded 
ExplicitGcViolation See #StrictMode.ThreadPolicy.Builder.detectExplicitGc()
Explode This transition tracks changes to the visibility of target views in the start and end scenes and moves views in or out from the edges of the scene. 
ExtendedSSLSession Extends the SSLSession interface to support additional session attributes. 
Extension This interface represents an X.509 extension. 
ExtensionSessionConfiguration A class that aggregates all supported arguments for CameraExtensionSession initialization. 
Externalizable Only the identity of the class of an Externalizable instance is written in the serialization stream and it is the responsibility of the class to save and restore the contents of its instances. 
ExternalStorageStats Shared/external storage statistics for a UserHandle on a single storage volume. 
ExtractEditText Specialization of EditText for showing and interacting with the extracted text in a full-screen input method. 
ExtractedText Information about text that has been extracted for use by an input method. 
ExtractedTextRequest Description of what an input method would like from an application when extract text from its input editor. 

F

FabricatedOverlay FabricatedOverlay describes the content of Fabricated Runtime Resource Overlay (FRRO) that is used to overlay the app's resources. 
Face Describes a face detected in an image. 
Face.Builder Builds a Face object. 
FaceDetector Identifies the faces of people in a Bitmap graphic object. 
FaceDetector.Face A Face contains all the information identifying the location of a face in a bitmap. 
FactoryConfigurationError Thrown when a problem with configuration with the Parser Factories exists. 
FactoryResetProtectionPolicy The factory reset protection policy determines which accounts can unlock a device that has gone through untrusted factory reset. 
FactoryResetProtectionPolicy.Builder Builder class for FactoryResetProtectionPolicy objects. 
Fade This transition tracks changes to the visibility of target views in the start and end scenes and fades views in or out when they become visible or non-visible. 
FastNative An ART runtime built-in optimization for native methods to speed up JNI transitions: Compared to normal native methods, native methods that are annotated with @FastNative use faster JNI transitions from managed code to the native code and back. 
FeatureGroupInfo A set of features that can be requested by an application. 
FeatureInfo Definition of a single optional hardware or software feature of an Android device. 
FederatedComputeInput The input data for FederatedComputeScheduler#schedule
FederatedComputeInput.Builder A builder for FederatedComputeInput 
FederatedComputeScheduler Handles scheduling federated compute jobs. 
FederatedComputeScheduler.Params The parameters related to job scheduling. 
FetchAndJoinCustomAudienceRequest The request object wrapping the required and optional parameters needed to fetch a CustomAudience
FetchAndJoinCustomAudienceRequest.Builder Builder for FetchAndJoinCustomAudienceRequest objects. 
Field This class is used to set all information of a field. 
Field A Field provides information about, and dynamic access to, a single field of a class or an interface. 
Field.Builder A builder for Field 
FieldClassification Represents a classified field from the detection service. 
FieldClassification Represents the field classification results for a given field. 
FieldClassification.Match Represents the score of a UserData entry for the field. 
FieldPacker This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
FieldPosition FieldPosition is a simple class used by Format and its subclasses to identify fields in formatted output. 
File An abstract representation of file and directory pathnames. 
FileAlreadyExistsException Checked exception thrown when an attempt is made to create a file or directory and a file of that name already exists. 
FileAttribute<T> An object that encapsulates the value of a file attribute that can be set atomically when creating a new file or directory by invoking the createFile or createDirectory methods. 
FileAttributeView An attribute view that is a read-only or updatable view of non-opaque values associated with a file in a filesystem. 
FileBackupHelper A helper class that can be used in conjunction with BackupAgentHelper to manage the backup of a set of files. 
FileChannel A channel for reading, writing, mapping, and manipulating a file. 
FileChannel.MapMode A typesafe enumeration for file-mapping modes. 
FileDescriptor Instances of the file descriptor class serve as an opaque handle to the underlying machine-specific structure representing an open file, an open socket, or another source or sink of bytes. 
FileFilter A filter for abstract pathnames. 
FileHandler Simple file logging Handler
FileInfo Describes a single file that is available over MBMS. 
FileInputStream A FileInputStream obtains input bytes from a file in a file system. 
FileIntegrityManager This class provides access to file integrity related operations. 
FileLock A token representing a lock on a region of a file. 
FileLockInterruptionException Checked exception received by a thread when another thread interrupts it while it is waiting to acquire a file lock. 
FilenameFilter Instances of classes that implement this interface are used to filter filenames. 
FileNameMap A simple interface which provides a mechanism to map between a file name and a MIME type string. 
FileNotFoundException Signals that an attempt to open the file denoted by a specified pathname has failed. 
FileObserver Monitors files (using inotify) to fire an event after files are accessed or changed by any process on the device (including this one). 
FileOutputStream A file output stream is an output stream for writing data to a File or to a FileDescriptor
FileOwnerAttributeView A file attribute view that supports reading or updating the owner of a file. 
FilePermission Legacy security code; do not use. 
FileReader Reads text from character files using a default buffer size. 
Files This class consists exclusively of static methods that operate on files, directories, or other types of files. 
FileServiceInfo Describes a file service available from the carrier from which files can be downloaded via cell-broadcast. 
FileStore Storage for files. 
FileStoreAttributeView An attribute view that is a read-only or updatable view of the attributes of a FileStore
FileSystem Provides an interface to a file system and is the factory for objects to access files and other objects in the file system. 
FileSystemAlreadyExistsException Runtime exception thrown when an attempt is made to create a file system that already exists. 
FileSystemException Thrown when a file system operation fails on one or two files. 
FileSystemLoopException Checked exception thrown when a file system loop, or cycle, is encountered. 
FileSystemNotFoundException Runtime exception thrown when a file system cannot be found. 
FileSystemProvider Service-provider class for file systems. 
FileSystems Factory methods for file systems. 
FileTime Represents the value of a file's time stamp attribute. 
FileTypeDetector A file type detector for probing a file to guess its file type. 
FileUriExposedException The exception that is thrown when an application exposes a file:// Uri to another app. 
FileUriExposedViolation  
FileUtils Utility methods useful for working with files. 
FileUtils.ProgressListener Listener that is called periodically as progress is made. 
FileVisitOption Defines the file tree traversal options. 
FileVisitor<T> A visitor of files. 
FileVisitResult The result type of a FileVisitor
FileWriter Writes text to character files using a default buffer size. 
FillCallback

FillCallback handles autofill requests from the AutofillService into the Activity being autofilled. 

FillContext This class represents a context for each fill request made via AutofillService.onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
FillEventHistory Describes what happened after the last AutofillService#onFillRequest(FillRequest, android.os.CancellationSignal, FillCallback) call. 
FillEventHistory.Event Description of an event that occurred after the latest call to FillCallback#onSuccess(FillResponse)
FillRequest This class represents a request to an autofill service to interpret the screen and provide information to the system which views are interesting for saving and what are the possible ways to fill the inputs on the screen if applicable. 
FillResponse Response for an AutofillService.onFillRequest(android.service.autofill.FillRequest, android.os.CancellationSignal, android.service.autofill.FillCallback)
FillResponse.Builder Builder for FillResponse objects. 
Filter

A filter constrains data with a filtering pattern. 

Filter A Filter can be used to provide fine grain control over what is logged, beyond the control provided by log levels. 
Filter.FilterListener

Listener used to receive a notification upon completion of a filtering operation. 

Filter.FilterResults

Holds the results of a filtering operation. 

Filterable

Defines a filterable behavior. 

FilterInputStream A FilterInputStream contains some other input stream, which it uses as its basic source of data, possibly transforming the data along the way or providing additional functionality. 
FilterOutputStream This class is the superclass of all classes that filter output streams. 
FilterQueryProvider This class can be used by external clients of CursorAdapter and CursorTreeAdapter to define how the content of the adapter should be filtered. 
FilterReader Abstract class for reading filtered character streams. 
FilterWriter Abstract class for writing filtered character streams. 
FingerprintGestureController An AccessibilityService can capture gestures performed on a device's fingerprint sensor, as long as the device has a sensor capable of detecting gestures. 
FingerprintGestureController.FingerprintGestureCallback Class that is called back when fingerprint gestures are being used for accessibility. 
FingerprintManager This class was deprecated in API level 28. See BiometricPrompt which shows a system-provided dialog upon starting authentication. In a world where devices may have different types of biometric authentication, it's much more realistic to have a system-provided authentication dialog since the method may vary by vendor/device. 
FingerprintManager.AuthenticationCallback This class was deprecated in API level 28. See BiometricPrompt.AuthenticationCallback 
FingerprintManager.AuthenticationResult This class was deprecated in API level 28. See BiometricPrompt.AuthenticationResult 
FingerprintManager.CryptoObject This class was deprecated in API level 28. See BiometricPrompt.CryptoObject 
FlakyTest This @interface was deprecated in API level 24. Use FlakyTest instead. New tests should be written using the Android Testing Support Library. 
Float The Float class wraps a value of primitive type float in an object. 
Float2 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Float3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Float4 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
FloatAction Action sent by a RangeTemplate, ToggleRangeTemplate
FloatArrayEvaluator This evaluator can be used to perform type interpolation between float[] values. 
FloatBuffer A float buffer. 
FloatEvaluator This evaluator can be used to perform type interpolation between float values. 
FloatMath This class was deprecated in API level 22. Use Math instead. 
FloatProperty<T> An implementation of Property to be used specifically with fields of type float
FloorsClimbedRecord Captures the number of floors climbed by the user between the start and end time. 
FloorsClimbedRecord.Builder Builder class for FloorsClimbedRecord 
Flow Interrelated interfaces and static methods for establishing flow-controlled components in which Publishers produce items consumed by one or more Subscribers, each managed by a Subscription
Flow.Processor<T, R> A component that acts as both a Subscriber and Publisher. 
Flow.Publisher<T> A producer of items (and related control messages) received by Subscribers. 
Flow.Subscriber<T> A receiver of messages. 
Flow.Subscription Message control linking a Publisher and Subscriber
Flushable A Flushable is a destination of data that can be flushed. 
FocusFinder The algorithm used for finding the next focusable view in a given direction from a view that currently has focus. 
Font A font class can be used for creating FontFamily. 
Font.Builder A builder class for creating new Font. 
FontFamily A font family class can be used for creating Typeface. 
FontFamily.Builder A builder class for creating new FontFamily. 
FontRequest This class was deprecated in API level 31. Use the FontRequest 
FontScaleConverter A converter for non-linear font scaling. 
FontsContract This class was deprecated in API level 31. Use the Jetpack Core Library FontsContractCompat for consistent behavior across all devices. 
FontsContract.Columns This class was deprecated in API level 31. Use the FontsContractCompat.Columns for consistent behavior across all devices. 
FontsContract.FontFamilyResult This class was deprecated in API level 31. Use the FontsContractCompat.FontFamilyResult for consistent behavior across all devices 
FontsContract.FontInfo This class was deprecated in API level 31. Use the FontsContractCompat.FontInfo for consistent behavior across all devices 
FontsContract.FontRequestCallback This class was deprecated in API level 31. Use the FontsContractCompat.FontRequestCallback for consistent behavior across all devices 
FontStyle A font style object. 
FontVariationAxis Class that holds information about single font variation axis. 
ForegroundColorSpan Changes the color of the text to which the span is attached. 
ForegroundServiceStartNotAllowedException Exception thrown when an app tries to start a foreground Service when it's not allowed to do so. 
ForegroundServiceTypeException Base exception thrown when an app tries to start a foreground Service without a valid type. 
ForkJoinPool An ExecutorService for running ForkJoinTasks. 
ForkJoinPool.ForkJoinWorkerThreadFactory Factory for creating new ForkJoinWorkerThreads. 
ForkJoinPool.ManagedBlocker Interface for extending managed parallelism for tasks running in ForkJoinPools. 
ForkJoinTask<V> Abstract base class for tasks that run within a ForkJoinPool
ForkJoinWorkerThread A thread managed by a ForkJoinPool, which executes ForkJoinTasks. 
Format Format is an abstract base class for formatting locale-sensitive information such as dates, messages, and numbers. 
Format.Field Defines constants that are used as attribute keys in the AttributedCharacterIterator returned from Format.formatToCharacterIterator and as field identifiers in FieldPosition
FormatException  
FormatFlagsConversionMismatchException Unchecked exception thrown when a conversion and flag are incompatible. 
FormatStyle Enumeration of the style of a localized date, time or date-time formatter. 
Formattable The Formattable interface must be implemented by any class that needs to perform custom formatting using the 's' conversion specifier of Formatter
FormattableFlags FormattableFlags are passed to the Formattable.formatTo() method and modify the output format for Formattables
FormattedNumber The result of a number formatting operation. 
FormattedNumberRange The result of a number range formatting operation. 
FormattedValue An abstract formatted value: a string with associated field attributes. 
Formatter Utility class to aid in formatting common values that are not covered by the Formatter class in java.util 
Formatter An interpreter for printf-style format strings. 
Formatter A Formatter provides support for formatting LogRecords. 
Formatter.BigDecimalLayoutForm Enum for BigDecimal formatting. 
FormatterClosedException Unchecked exception thrown when the formatter has been closed. 
FormEditRecord Record of a form filling operation that has been executed on a single form field in a PDF. 
FormEditRecord.Builder Builder for FormEditRecord 
FormWidgetInfo Information about a form widget of a PDF document. 
FormWidgetInfo.Builder Builder for FormWidgetInfo 
FractionPrecision A class that defines a rounding strategy based on a number of fraction places and optionally significant digits to be used when formatting numbers in NumberFormatter. 
Fragment This class was deprecated in API level 28. Use the Jetpack Fragment Library Fragment for consistent behavior across all devices and access to Lifecycle. 
Fragment.InstantiationException This class was deprecated in API level 28. Use Fragment.InstantiationException 
Fragment.SavedState This class was deprecated in API level 28. Use Fragment.SavedState 
FragmentBreadCrumbs This class was deprecated in API level 21. This widget is no longer supported. 
FragmentBreadCrumbs.OnBreadCrumbClickListener This interface was deprecated in API level 28. This widget is no longer supported. 
FragmentContainer This class was deprecated in API level 28. Use the Support Library FragmentContainer. 
FragmentController This class was deprecated in API level 28. Use the Support Library FragmentController 
FragmentHostCallback<E> This class was deprecated in API level 28. Use the Support Library FragmentHostCallback 
FragmentManager This class was deprecated in API level 28. Use the Support Library FragmentManager for consistent behavior across all devices and access to Lifecycle. 
FragmentManager.BackStackEntry This interface was deprecated in API level 28. Use the Support Library FragmentManager.BackStackEntry 
FragmentManager.FragmentLifecycleCallbacks This class was deprecated in API level 28. Use the Support Library FragmentManager.FragmentLifecycleCallbacks 
FragmentManager.OnBackStackChangedListener This interface was deprecated in API level 28. Use the Support Library FragmentManager.OnBackStackChangedListener 
FragmentManagerNonConfig This class was deprecated in API level 28. Use the Support Library FragmentManagerNonConfig 
FragmentTransaction This class was deprecated in API level 28. Use the Support Library FragmentTransaction 
FrameLayout FrameLayout is designed to block out an area on the screen to display a single item. 
FrameLayout.LayoutParams Per-child layout information for layouts that support margins. 
FrameMetrics Class containing timing data for various milestones in a frame lifecycle reported by the rendering subsystem. 
FrameStats This is the base class for frame statistics. 
Freezable<T> Provides a flexible mechanism for controlling access, without requiring that a class be immutable. 
FreezePeriod A class that represents one freeze period which repeats annually
FrequencyCapFilters A container for the ad filters that are based on frequency caps. 
FrequencyCapFilters.Builder Builder for creating FrequencyCapFilters objects. 
FullBackupDataOutput Provides the interface through which a BackupAgent writes entire files to a full backup data set, via its BackupAgent#onFullBackup(FullBackupDataOutput) method. 
Function<T, R> Represents a function that accepts one argument and produces a result. 
FunctionalInterface An informative annotation type used to indicate that an interface type declaration is intended to be a functional interface as defined by the Java Language Specification. 
Future<V> A Future represents the result of an asynchronous computation. 
FutureTask<V> A cancellable asynchronous computation. 

G

Gainmap Gainmap represents a mechanism for augmenting an SDR image to produce an HDR one with variable display adjustment capability. 
Gallery This class was deprecated in API level 16. This widget is no longer supported. Other horizontally scrolling widgets include HorizontalScrollView and ViewPager from the support library. 
Gallery.LayoutParams Gallery extends LayoutParams to provide a place to hold current Transformation information along with previous position/transformation info. 
GameManager The GameManager allows system apps to modify and query the game mode of apps. 
GameState State of the game passed to the GameManager. 
GatewayInfo Encapsulated gateway address information for outgoing call. 
GatheringByteChannel A channel that can write bytes from a sequence of buffers. 
GCMParameterSpec Specifies the set of parameters required by a Cipher using the Galois/Counter Mode (GCM) mode. 
GeneralSecurityException The GeneralSecurityException class is a generic security exception class that provides type safety for all the security-related exception classes that extend from it. 
Generated  
GenericArrayType GenericArrayType represents an array type whose component type is either a parameterized type or a type variable. 
GenericDeclaration A common interface for all entities that declare type variables. 
GenericDocument Represents a document unit. 
GenericDocument.Builder<BuilderType extends GenericDocument.Builder<BuilderType>> The builder class for GenericDocument
GenericSignatureFormatError Thrown when a syntactically malformed signature attribute is encountered by a reflective method that needs to interpret the generic signature information for a type, method or constructor. 
Geocoder A class for handling geocoding and reverse geocoding. 
Geocoder.GeocodeListener A listener for asynchronous geocoding results. 
GeolocationPermissions This class is used to manage permissions for the WebView's Geolocation JavaScript API. 
GeolocationPermissions.Callback A callback interface used by the host application to set the Geolocation permission state for an origin. 
GeomagneticField Estimates magnetic field at a given point on Earth, and in particular, to compute the magnetic declination from true north. 
Gesture A gesture is a hand-drawn shape on a touch screen. 
GestureDescription Accessibility services with the R.styleable.AccessibilityService_canPerformGestures property can dispatch gestures. 
GestureDescription.Builder Builder for a GestureDescription 
GestureDescription.StrokeDescription Immutable description of stroke that can be part of a gesture. 
GestureDetector Detects various gestures and events using the supplied MotionEvents. 
GestureDetector.OnContextClickListener The listener that is used to notify when a context click occurs. 
GestureDetector.OnDoubleTapListener The listener that is used to notify when a double-tap or a confirmed single-tap occur. 
GestureDetector.OnGestureListener The listener that is used to notify when gestures occur. 
GestureDetector.SimpleOnGestureListener A convenience class to extend when you only want to listen for a subset of all the gestures. 
GestureLibraries  
GestureLibrary  
GestureOverlayView A transparent overlay for gesture input that can be placed on top of other widgets or contain other widgets. 
GestureOverlayView.OnGestureListener  
GestureOverlayView.OnGesturePerformedListener  
GestureOverlayView.OnGesturingListener  
GesturePoint A timed point of a gesture stroke. 
GestureStore GestureLibrary maintains gesture examples and makes predictions on a new gesture 
GestureStroke A gesture stroke started on a touch down and ended on a touch up. 
GestureUtils Utility functions for gesture processing & analysis, including methods for:
  • feature extraction (e.g., samplers and those for calculating bounding boxes and gesture path lengths);
  • geometric transformation (e.g., translation, rotation and scaling);
  • gesture similarity comparison (e.g., calculating Euclidean or Cosine distances between two gestures). 
GetAdSelectionDataOutcome Represents ad selection data collected from device for ad selection. 
GetAdSelectionDataRequest Represents a request containing the information to get ad selection data. 
GetAdSelectionDataRequest.Builder Builder for GetAdSelectionDataRequest objects. 
GetByDocumentIdRequest Encapsulates a request to retrieve documents by namespace and IDs from the AppSearchSession database. 
GetByDocumentIdRequest.Builder Builder for GetByDocumentIdRequest objects. 
GetChars Please implement this interface if your CharSequence has a getChars() method like the one in String that is faster than calling charAt() multiple times. 
GetCredentialException Represents an error encountered during the CredentialManager#getCredential(Context, GetCredentialRequest, CancellationSignal, Executor, OutcomeReceiver) operation. 
GetCredentialRequest A request to retrieve the user credential, potentially launching UI flows to let the user pick from different credential sources. 
GetCredentialRequest Request for getting user's credential from a given credential provider. 
GetCredentialRequest.Builder A builder for GetCredentialRequest
GetCredentialResponse A response object that encapsulates the credential successfully retrieved from the user. 
GetSchemaResponse The response class of AppSearchSession#getSchema 
GetSchemaResponse.Builder Builder for GetSchemaResponse objects. 
GetTopicsRequest Get Topics Request. 
GetTopicsRequest.Builder Builder for GetTopicsRequest objects. 
GetTopicsResponse Represent the result from the getTopics API. 
GetTopicsResponse.Builder Builder for GetTopicsResponse objects. 
GetWalletCardsCallback Handles response from the QuickAccessWalletService for GetWalletCardsRequest 
GetWalletCardsError Error response for an GetWalletCardsRequest
GetWalletCardsRequest Represents a request to a QuickAccessWalletService for walletCards
GetWalletCardsResponse The response for an GetWalletCardsRequest contains a list of wallet cards and the index of the card that should initially be displayed in the 'selected' position. 
GL  
GL10  
GL10Ext  
GL11  
GL11Ext  
GL11ExtensionPack  
GLDebugHelper A helper class for debugging OpenGL ES applications. 
GLES10  
GLES10Ext  
GLES11  
GLES11Ext  
GLES20 OpenGL ES 2.0 
GLES30 OpenGL ES 3.0 
GLES31 OpenGL ES 3.1 
GLES31Ext  
GLES31Ext.DebugProcKHR  
GLES32 OpenGL ES 3.2 
GLES32.DebugProc  
GLException An exception class for OpenGL errors. 
GlobalSearchSession Provides a connection to all AppSearch databases the querying application has been granted access to. 
GLSurfaceView An implementation of SurfaceView that uses the dedicated surface for displaying OpenGL rendering. 
GLSurfaceView.EGLConfigChooser An interface for choosing an EGLConfig configuration from a list of potential configurations. 
GLSurfaceView.EGLContextFactory An interface for customizing the eglCreateContext and eglDestroyContext calls. 
GLSurfaceView.EGLWindowSurfaceFactory An interface for customizing the eglCreateWindowSurface and eglDestroySurface calls. 
GLSurfaceView.GLWrapper An interface used to wrap a GL interface. 
GLSurfaceView.Renderer A generic renderer interface. 
GLU A set of GL utilities inspired by the OpenGL Utility Toolkit. 
GLUtils Utility class to help bridging OpenGL ES and Android APIs. 
GnssAntennaInfo A class that contains information about a GNSS antenna. 
GnssAntennaInfo.Builder Builder class for GnssAntennaInfo. 
GnssAntennaInfo.Listener Used for receiving GNSS antenna info from the GNSS engine. 
GnssAntennaInfo.PhaseCenterOffset Class containing information about the antenna phase center offset (PCO). 
GnssAntennaInfo.SphericalCorrections Represents corrections on a spherical mapping. 
GnssAutomaticGainControl A class that contains GNSS Automatic Gain Control (AGC) information. 
GnssAutomaticGainControl.Builder Builder for GnssAutomaticGainControl 
GnssCapabilities GNSS chipset capabilities. 
GnssCapabilities.Builder Builder for GnssCapabilities. 
GnssClock A class containing a GNSS clock timestamp. 
GnssMeasurement A class representing a GNSS satellite measurement, containing raw and computed information. 
GnssMeasurementRequest This class contains extra parameters to pass in a GNSS measurement request. 
GnssMeasurementRequest.Builder Builder for GnssMeasurementRequest 
GnssMeasurementsEvent A class implementing a container for data associated with a measurement event. 
GnssMeasurementsEvent.Builder Builder for GnssMeasurementsEvent 
GnssMeasurementsEvent.Callback Used for receiving GNSS satellite measurements from the GNSS engine. 
GnssNavigationMessage A class containing a GNSS satellite Navigation Message. 
GnssNavigationMessage.Callback Used for receiving GNSS satellite Navigation Messages from the GNSS engine. 
GnssSignalType This class represents a GNSS signal type. 
GnssStatus This class represents the current state of the GNSS engine and is used in conjunction with GnssStatus.Callback
GnssStatus.Builder Builder class to help create new GnssStatus instances. 
GnssStatus.Callback Used for receiving notifications when GNSS events happen. 
GpsSatellite This class was deprecated in API level 24. use GnssStatus and GnssStatus.Callback. 
GpsStatus This class was deprecated in API level 24. Use GnssStatus instead. 
GpsStatus.Listener This interface was deprecated in API level 24. Use GnssStatus.Callback instead. 
GpsStatus.NmeaListener This interface was deprecated in API level 24. use OnNmeaMessageListener instead. 
GradientDrawable A Drawable with a color gradient for buttons, backgrounds, etc. 
GradientDrawable.Orientation Controls how the gradient is oriented relative to the drawable's bounds 
GrammaticalInflectionManager This class allow applications to control granular grammatical inflection settings (such as per-app grammatical gender). 
GraphemeClusterSegmentFinder Implementation of SegmentFinder using grapheme clusters as the text segment. 
Gravity Standard constants and tools for placing an object within a potentially larger container. 
GregorianCalendar [icu enhancement] ICU's replacement for GregorianCalendar. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
GregorianCalendar GregorianCalendar is a concrete subclass of Calendar and provides the standard calendar system used by most of the world. 
GridLayout A layout that places its children in a rectangular grid
GridLayout.Alignment Alignments specify where a view should be placed within a cell group and what size it should be. 
GridLayout.LayoutParams Layout information associated with each of the children of a GridLayout. 
GridLayout.Spec A Spec defines the horizontal or vertical characteristics of a group of cells. 
GridLayoutAnimationController A layout animation controller is used to animated a grid layout's children. 
GridLayoutAnimationController.AnimationParameters The set of parameters that has to be attached to each view contained in the view group animated by the grid layout animation controller. 
GridView A view that shows items in two-dimensional scrolling grid. 
Group This interface was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
GroupCall Class used to represent a single MBMS group call. 
GroupCallCallback A callback class for use when the application is in a group call. 
GroupPrincipal A UserPrincipal representing a group identity, used to determine access rights to objects in a file system. 
GsmCellLocation This class was deprecated in API level 31. use CellIdentity. 
Guard

This interface represents a guard, which is an object that is used to protect access to another object. 

GuardedObject A GuardedObject is an object that is used to protect access to another object. 
GZIPInputStream This class implements a stream filter for reading compressed data in the GZIP file format. 
GZIPOutputStream This class implements a stream filter for writing compressed data in the GZIP file format. 

H

Half

The Half class is a wrapper and a utility class to manipulate half-precision 16-bit IEEE 754 floating point data types (also called fp16 or binary16). 

Handler A Handler allows you to send and process Message and Runnable objects associated with a thread's MessageQueue
Handler A Handler object takes log messages from a Logger and exports them. 
Handler.Callback Callback interface you can use when instantiating a Handler to avoid having to implement your own subclass of Handler. 
HandlerBase This class was deprecated in API level 9. This class works with the deprecated DocumentHandler interface. It has been replaced by the SAX2 DefaultHandler class. 
HandlerThread A Thread that has a Looper
HandshakeCompletedEvent This event indicates that an SSL handshake completed on a given SSL connection. 
HandshakeCompletedListener This interface is implemented by any class which wants to receive notifications about the completion of an SSL protocol handshake on a given SSL connection. 
HandwritingGesture Base class for stylus handwriting gestures. 
HapticFeedbackConstants Constants to be used to perform haptic feedback effects via View#performHapticFeedback(int) 
HapticGenerator Haptic Generator(HG). 
HardwareBuffer HardwareBuffer wraps a native AHardwareBuffer object, which is a low-level object representing a memory buffer accessible by various hardware units. 
HardwareBufferRenderer

Creates an instance of a hardware-accelerated renderer. 

HardwareBufferRenderer.RenderRequest Sets the parameters that can be used to control a render request for a HardwareBufferRenderer
HardwareBufferRenderer.RenderResult Class that contains data regarding the result of the render request. 
HardwarePropertiesManager The HardwarePropertiesManager class provides a mechanism of accessing hardware state of a device: CPU, GPU and battery temperatures, CPU usage per core, fan speed, etc. 
HardwareRenderer

Creates an instance of a hardware-accelerated renderer. 

HardwareRenderer.FrameRenderRequest Sets the parameters that can be used to control a render request for a HardwareRenderer
HashMap<K, V> Hash table based implementation of the Map interface. 
HashSet<E> This class implements the Set interface, backed by a hash table (actually a HashMap instance). 
Hashtable<K, V> This class implements a hash table, which maps keys to values. 
HdrConversionMode Describes the HDR conversion mode for a device. 
HeaderBlock Unmodifiable container of headers or trailers. 
HeaderViewListAdapter ListAdapter used when a ListView has header views. 
HealthConnectException Class representing health connect exceptions. 
HealthConnectManager This class provides APIs to interact with the centralized HealthConnect storage maintained by the system. 
HealthPermissions Permissions for accessing the HealthConnect APIs. 
HealthStats A HealthStats object contains system health data about an application. 
HeartRateRecord Captures the user's heart rate. 
HeartRateRecord.Builder Builder class for HeartRateRecord 
HeartRateRecord.HeartRateSample A class to represent heart rate samples 
HeartRateVariabilityRmssdRecord Captures the user's heart rate variability RMSSD. 
HeartRateVariabilityRmssdRecord.Builder Builder class for HeartRateVariabilityRmssdRecord 
HebrewCalendar HebrewCalendar is a subclass of Calendar that that implements the traditional Hebrew calendar. 
HeightRecord Captures the user's height. 
HeightRecord.Builder Builder class for HeightRecord 
HeterogeneousExpandableList Additional methods that when implemented make an ExpandableListAdapter take advantage of the Adapter view type mechanism. 
HexFormat HexFormat converts between bytes and chars and hex-encoded strings which may include additional formatting markup such as prefixes, suffixes, and delimiters. 
HideReturnsTransformationMethod This transformation method causes any carriage return characters (\r) to be hidden by displaying them as zero-width non-breaking space characters (\ufeff). 
Highlights A class that represents of the highlight of the text. 
Highlights.Builder A builder for the Highlights. 
HijrahChronology The Hijrah calendar is a lunar calendar supporting Islamic calendars. 
HijrahDate A date in the Hijrah calendar system. 
HijrahEra An era in the Hijrah calendar system. 
HomeSp Class representing HomeSP subtree in PerProviderSubscription (PPS) Management Object (MO) tree. 
HorizontalScrollView Layout container for a view hierarchy that can be scrolled by the user, allowing it to be larger than the physical display. 
HostApduService

HostApduService is a convenience Service class that can be extended to emulate an NFC card inside an Android service component. 

HostNameResolver This interface was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
HostnameVerifier This class is the base interface for hostname verification. 
HostNfcFService

HostNfcFService is a convenience Service class that can be extended to emulate an NFC-F card inside an Android service component. 

HostUsiVersion Provides information about the supported Universal Stylus Initiative (USI) version of the host device. 
HpkeSpi Service Provider Interface for HPKE client API classes to communicate with implementations of HPKE as described in RFC 9180. 
Html This class processes HTML strings into displayable styled text. 
Html.ImageGetter Retrieves images for HTML <img> tags. 
Html.TagHandler Is notified when HTML tags are encountered that the parser does not know how to interpret. 
HttpAuthHandler Represents a request for HTTP authentication. 
HttpConnectionParams This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
HttpCookie An HttpCookie object represents an HTTP cookie, which carries state information between server and user agent. 
HttpEngine An engine to process UrlRequests, which uses the best HTTP stack available on the current platform. 
HttpEngine.Builder A builder for HttpEngines, which allows runtime configuration of HttpEngine
HttpException Base exception passed to UrlRequest.Callback.onFailed()
HttpParams This interface was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
HttpResponseCache Caches HTTP and HTTPS responses to the filesystem so they may be reused, saving time and bandwidth. 
HttpRetryException Thrown to indicate that a HTTP request needs to be retried but cannot be retried automatically, due to streaming mode being enabled. 
HttpsURLConnection HttpsURLConnection extends HttpURLConnection with support for https-specific features. 
HttpURLConnection A URLConnection with support for HTTP-specific features. 
HydrationRecord Captures the amount of liquids user had in a single drink. 
HydrationRecord.Builder Builder class for HydrationRecord 

I

IBinder Base interface for a remotable object, the core part of a lightweight remote procedure call mechanism designed for high performance when performing in-process and cross-process calls. 
IBinder.DeathRecipient Interface for receiving a callback when the process hosting an IBinder has gone away. 
IccOpenLogicalChannelResponse Response to the TelephonyManager#iccOpenLogicalChannel command. 
Icon An umbrella container for several serializable graphics representations, including Bitmaps, compressed bitmap images (e.g. JPG or PNG), and drawable resources (including vectors). 
Icon.OnDrawableLoadedListener Implement this interface to receive a callback when loadDrawableAsync is finished and your Drawable is ready. 
IconMarginSpan Paragraph affecting span, that draws a bitmap at the beginning of a text. 
ICUUncheckedIOException Unchecked version of IOException
Identity This class was deprecated in API level 3. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.KeyStore, the java.security.cert package, and java.security.Principal. 
IdentityChangedListener Base class for Aware identity/cluster changes callbacks. 
IdentityCredential Class used to read data from a previously provisioned credential. 
IdentityCredentialException Base class for all Identity Credential exceptions. 
IdentityCredentialStore An interface to a secure store for user identity documents. 
IdentityHashMap<K, V> This class implements the Map interface with a hash table, using reference-equality in place of object-equality when comparing keys (and values). 
IdentityScope This class was deprecated in API level 3. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.KeyStore, the java.security.cert package, and java.security.Principal. 
IDN Provides methods to convert internationalized domain names (IDNs) between a normal Unicode representation and an ASCII Compatible Encoding (ACE) representation. 
IDNA Abstract base class for IDNA processing. 
IDNA.Error IDNA error bit set values. 
IDNA.Info Output container for IDNA processing errors. 
IInterface Base class for Binder interfaces. 
IkeDerAsn1DnIdentification This class represents an IKE entity ID based on a DER encoded ASN.1 X.500 Distinguished Name. 
IkeException IkeException represents a generic exception that includes internal and protocol exceptions. 
IkeFqdnIdentification IkeFqdnIdentification represents an IKE entity identification based on a fully-qualified domain name (FQDN). 
IkeIdentification IkeIdentification is abstract base class that represents the common information for all types of IKE entity identification. 
IkeInternalException IkeInternalException encapsulates all local implementation or resource related exceptions. 
IkeIOException Wrapper for I/O exceptions encountered during IKE operations. 
IkeIpv4AddrIdentification IkeIpv4AddrIdentification represents an IKE entity identification based on IPv4 address. 
IkeIpv6AddrIdentification IkeIpv6AddrIdentification represents an IKE entity identification based on IPv6 address. 
IkeKeyIdIdentification IkeKeyIdIdentification represents an IKE entity identification based on a Key ID. 
IkeNetworkLostException IkeNetworkLostException is returned to the caller via IkeSessionCallback.onError(android.net.ipsec.ike.exceptions.IkeException) if the underlying Network for the IkeSession was lost with no alternatives. 
IkeNonProtocolException IkeNonProtocolException encapsulates all implementation-specific non-protocol IKE errors. 
IkeProtocolException IkeProtocolException is an abstract class that represents the common information for all IKE protocol errors. 
IkeRfc822AddrIdentification IkeRfc822AddrIdentification represents an IKE entity identification based on a fully-qualified RFC 822 email address ID (e.g. ike@android.com). 
IkeSaProposal IkeSaProposal represents a proposed configuration to negotiate an IKE SA. 
IkeSaProposal.Builder This class is used to incrementally construct a IkeSaProposal. 
IkeSession This class represents an IKE Session management object that allows for keying and management of IpSecTransforms. 
IkeSessionCallback Callback interface for receiving state changes of an IkeSession
IkeSessionConfiguration IkeSessionConfiguration represents the negotiated configuration for a IkeSession
IkeSessionConfiguration.Builder This class can be used to incrementally construct a IkeSessionConfiguration
IkeSessionConnectionInfo IkeSessionConnectionInfo represents the connection information of an IkeSession
IkeSessionParams IkeSessionParams contains all user provided configurations for negotiating an IkeSession
IkeSessionParams.Builder This class can be used to incrementally construct a IkeSessionParams
IkeSessionParams.IkeAuthConfig This class contains common information of an IKEv2 authentication configuration. 
IkeSessionParams.IkeAuthDigitalSignLocalConfig This class represents the configuration to support IKEv2 public-key-signature-based authentication of the local side. 
IkeSessionParams.IkeAuthDigitalSignRemoteConfig This class represents the configuration to support IKEv2 public-key-signature-based authentication of the remote side. 
IkeSessionParams.IkeAuthEapConfig This class represents the configuration to support EAP authentication of the local side. 
IkeSessionParams.IkeAuthPskConfig This class represents the configuration to support IKEv2 pre-shared-key-based authentication of local or remote side. 
IkeTimeoutException This exception is thrown when there is an IKE retransmission timeout. 
IkeTrafficSelector IkeTrafficSelector represents a Traffic Selector of a Child Session. 
IkeTunnelConnectionParams IkeTunnelConnectionParams contains IKEv2 configurations to establish an IKE/IPsec tunnel. 
Ikev2VpnProfile The Ikev2VpnProfile is a configuration for the platform setup of IKEv2/IPsec VPNs. 
Ikev2VpnProfile.Builder A incremental builder for IKEv2 VPN profiles 
IllegalAccessError Thrown if an application attempts to access or modify a field, or to call a method that it does not have access to. 
IllegalAccessException An IllegalAccessException is thrown when an application tries to reflectively create an instance (other than an array), set or get a field, or invoke a method, but the currently executing method does not have access to the definition of the specified class, field, method or constructor. 
IllegalArgumentException Thrown to indicate that a method has been passed an illegal or inappropriate argument. 
IllegalBlockingModeException Unchecked exception thrown when a blocking-mode-specific operation is invoked upon a channel in the incorrect blocking mode. 
IllegalBlockSizeException This exception is thrown when the length of data provided to a block cipher is incorrect, i.e., does not match the block size of the cipher. 
IllegalChannelGroupException Unchecked exception thrown when an attempt is made to open a channel in a group that was not created by the same provider. 
IllegalCharsetNameException Unchecked exception thrown when a string that is not a legal charset name is used as such. 
IllegalFormatCodePointException Unchecked exception thrown when a character with an invalid Unicode code point as defined by Character#isValidCodePoint is passed to the Formatter
IllegalFormatConversionException Unchecked exception thrown when the argument corresponding to the format specifier is of an incompatible type. 
IllegalFormatException Unchecked exception thrown when a format string contains an illegal syntax or a format specifier that is incompatible with the given arguments. 
IllegalFormatFlagsException Unchecked exception thrown when an illegal combination flags is given. 
IllegalFormatPrecisionException Unchecked exception thrown when the precision is a negative value other than -1, the conversion does not support a precision, or the value is otherwise unsupported. 
IllegalFormatWidthException Unchecked exception thrown when the format width is a negative value other than -1 or is otherwise unsupported. 
IllegalMonitorStateException Thrown to indicate that a thread has attempted to wait on an object's monitor or to notify other threads waiting on an object's monitor without owning the specified monitor. 
IllegalSelectorException Unchecked exception thrown when an attempt is made to register a channel with a selector that was not created by the provider that created the channel. 
IllegalStateException Signals that a method has been invoked at an illegal or inappropriate time. 
IllegalThreadStateException Thrown to indicate that a thread is not in an appropriate state for the requested operation. 
IllformedLocaleException Thrown by methods in ULocale and ULocale.Builder to indicate that an argument is not a well-formed BCP 47 tag. 
IllformedLocaleException Thrown by methods in Locale and Locale.Builder to indicate that an argument is not a well-formed BCP 47 tag. 
Image

A single complete image buffer to use with a media source such as a MediaCodec or a CameraDevice

Image.Plane

A single color plane of image data. 

ImageButton

Displays a button with an image (instead of text) that can be pressed or clicked by the user. 

ImageDecoder

A class for converting encoded images (like PNG, JPEG, WEBP, GIF, or HEIF) into Drawable or Bitmap objects. 

ImageDecoder.DecodeException Information about an interrupted decode. 
ImageDecoder.ImageInfo Information about an encoded image. 
ImageDecoder.OnHeaderDecodedListener Interface for changing the default settings of a decode. 
ImageDecoder.OnPartialImageListener Interface for inspecting a DecodeException and potentially preventing it from being thrown. 
ImageDecoder.Source Source of encoded image data. 
ImageFormat  
ImageReader

The ImageReader class allows direct application access to image data rendered into a Surface

Several Android media API classes accept Surface objects as targets to render to, including MediaPlayer, MediaCodec, CameraDevice, ImageWriter and RenderScript Allocations

ImageReader.Builder Builder class for ImageReader objects. 
ImageReader.OnImageAvailableListener Callback interface for being notified that a new image is available. 
ImageSpan Span that replaces the text it's attached to with a Drawable that can be aligned with the bottom or with the baseline of the surrounding text. 
ImageSwitcher ViewSwitcher that switches between two ImageViews when a new image is set on it. 
ImageTransformation Replaces the content of a child ImageView of a presentation template with the first image that matches a regular expression (regex). 
ImageTransformation.Builder Builder for ImageTransformation objects. 
ImageView Displays image resources, for example Bitmap or Drawable resources. 
ImageView.ScaleType Options for scaling the bounds of an image to the bounds of this view. 
ImageWriter

The ImageWriter class allows an application to produce Image data into a Surface, and have it be consumed by another component like CameraDevice

ImageWriter.Builder Builder class for ImageWriter objects. 
ImageWriter.OnImageReleasedListener ImageWriter callback interface, used to to asynchronously notify the application of various ImageWriter events. 
ImplicitDirectBootViolation Subclass of Violation that is used when a process implicitly relies on automatic Direct Boot filtering. 
ImsException This class defines an IMS-related exception that has been thrown while interacting with a device or carrier provided ImsService implementation. 
ImsManager Provides access to information about Telephony IMS services on the device. 
ImsMmTelManager A manager for the MmTel (Multimedia Telephony) feature of an IMS network, given an associated subscription. 
ImsMmTelManager.CapabilityCallback Receives IMS capability status updates from the ImsService. 
ImsRcsManager Manager for interfacing with the framework RCS services, including the User Capability Exchange (UCE) service, as well as managing user settings. 
ImsReasonInfo Provides details on why an IMS call failed. 
ImsRegistrationAttributes Contains the attributes associated with the current IMS registration. 
ImsRegistrationImplBase Controls IMS registration for this ImsService and notifies the framework when the IMS registration for this ImsService has changed status. 
ImsStateCallback A callback class used for monitoring changes in IMS service connection states for a specific subscription. 
InCallService This service is implemented by an app that wishes to provide functionality for managing phone calls. 
InCallService.VideoCall Used to issue commands to the Connection.VideoProvider associated with a Call
InCallService.VideoCall.Callback The InCallService extends this class to provide a means of receiving callbacks from the Connection.VideoProvider
IncompatibleClassChangeError Thrown when an incompatible class change has occurred to some class definition. 
IncompleteAnnotationException Thrown to indicate that a program has attempted to access an element of an annotation interface that was added to the annotation interface definition after the annotation was compiled (or serialized). 
IncorrectContextUseViolation Incorrect usage of Context, such as obtaining a UI service from non-UI Context instance. 
IndexedPropertyChangeEvent An "IndexedPropertyChange" event gets delivered whenever a component that conforms to the JavaBeans™ specification (a "bean") changes a bound indexed property. 
IndexOutOfBoundsException Thrown to indicate that an index of some sort (such as to an array, to a string, or to a vector) is out of range. 
IndianCalendar IndianCalendar is a subclass of GregorianCalendar that numbers years since the birth of the Buddha. 
Inet4Address This class represents an Internet Protocol version 4 (IPv4) address. 
Inet6Address This class represents an Internet Protocol version 6 (IPv6) address. 
InetAddress This class represents an Internet Protocol (IP) address. 
InetAddresses Utility methods for InetAddress implementations. 
InetSocketAddress This class implements an IP Socket Address (IP address + port number) It can also be a pair (hostname + port number), in which case an attempt will be made to resolve the hostname. 
InferenceInput Contains all the information needed for a run of model inference. 
InferenceInput.Builder A builder for InferenceInput 
InferenceInput.Params  
InferenceInput.Params.Builder A builder for Params 
InferenceOutput The result returned by ModelManager#run
InferenceOutput.Builder A builder for InferenceOutput 
InflateException This exception is thrown by an inflater on error conditions. 
Inflater This class provides support for general purpose decompression using the popular ZLIB compression library. 
InflaterInputStream This class implements a stream filter for uncompressing data in the "deflate" compression format. 
InflaterOutputStream Implements an output stream filter for uncompressing data stored in the "deflate" compression format. 
InheritableThreadLocal<T> This class extends ThreadLocal to provide inheritance of values from parent thread to child thread: when a child thread is created, the child receives initial values for all inheritable thread-local variables for which the parent has values. 
Inherited Indicates that an annotation interface is automatically inherited. 
InlineContentView This class represents a view that holds opaque content from another app that you can inline in your UI. 
InlineContentView.SurfaceControlCallback Callback for observing the lifecycle of the surface control that manipulates the backing secure embedded UI surface. 
InlineExecutionProhibitedException Thrown when an executor runs a submitted runnable inline in Executor.execute(Runnable) and UrlRequest.Builder.setDirectExecutorAllowed(boolean) was not called. 
InlinePresentation Wrapper class holding a Slice and an InlinePresentationSpec for rendering UI for an Inline Suggestion. 
InlinePresentationSpec This class represents the presentation specification by which an inline suggestion should abide when constructing its UI. 
InlinePresentationSpec.Builder A builder for InlinePresentationSpec 
InlineSuggestion This class represents an inline suggestion which is made by one app and can be embedded into the UI of another. 
InlineSuggestionInfo This class represents the description of an inline suggestion. 
InlineSuggestionsRequest This class represents an inline suggestion request made by one app to get suggestions from the other source. 
InlineSuggestionsRequest.Builder A builder for InlineSuggestionsRequest 
InlineSuggestionsResponse This class represents an inline suggestion response. 
InMemoryDexClassLoader A ClassLoader implementation that loads classes from a buffer containing a DEX file. 
InputBinding Information given to an InputMethod about a client connecting to it. 
InputConfiguration Immutable class to store an input configuration that is used to create a reprocessable capture session. 
InputConnection The InputConnection interface is the communication channel from an InputMethod back to the application that is receiving its input. 
InputConnectionWrapper

Wrapper class for proxying calls to another InputConnection. 

InputContentInfo A container object with which input methods can send content files to the target application. 
InputDevice Describes the capabilities of a particular input device. 
InputDevice.MotionRange Provides information about the range of values for a particular MotionEvent axis. 
InputDevice.ViewBehavior Provides information on how views processing MotionEvents generated by this input device should respond to the events. 
InputEvent Common base class for input events. 
InputFilter InputFilters can be attached to Editables to constrain the changes that can be made to them. 
InputFilter.AllCaps This filter will capitalize all the lowercase and titlecase letters that are added through edits. 
InputFilter.LengthFilter This filter will constrain edits not to make the length of the text greater than the specified length. 
InputManager Provides information about input devices and available key layouts. 
InputManager.InputDeviceListener Listens for changes in input devices. 
InputMethod This class provides input method APIs. 
InputMethod The InputMethod interface represents an input method which can generate key events and text, such as digital, email addresses, CJK characters, other language characters, and etc., while handling various input events, and send the text back to the application that requests text input. 
InputMethod.AccessibilityInputConnection This class provides the allowed list of InputConnection APIs for accessibility services. 
InputMethod.SessionCallback  
InputMethodInfo This class is used to specify meta information of an input method. 
InputMethodManager Central system API to the overall input method framework (IMF) architecture, which arbitrates interaction between applications and the current input method. 
InputMethodService InputMethodService provides a standard implementation of an InputMethod, which final implementations can derive from and customize. 
InputMethodService.InputMethodImpl Concrete implementation of AbstractInputMethodService.AbstractInputMethodImpl that provides all of the standard behavior for an input method. 
InputMethodService.InputMethodSessionImpl Concrete implementation of AbstractInputMethodService.AbstractInputMethodSessionImpl that provides all of the standard behavior for an input method session. 
InputMethodService.Insets Information about where interesting parts of the input method UI appear. 
InputMethodSession The InputMethodSession interface provides the per-client functionality of InputMethod that is safe to expose to applications. 
InputMethodSession.EventCallback  
InputMethodSubtype This class is used to specify meta information of a subtype contained in an input method editor (IME). 
InputMethodSubtype.InputMethodSubtypeBuilder InputMethodSubtypeBuilder is a builder class of InputMethodSubtype. 
InputMismatchException Thrown by a Scanner to indicate that the token retrieved does not match the pattern for the expected type, or that the token is out of range for the expected type. 
InputQueue An input queue provides a mechanism for an application to receive incoming input events. 
InputQueue.Callback Interface to receive notification of when an InputQueue is associated and dissociated with a thread. 
InputSource A single input source for an XML entity. 
InputStream This abstract class is the superclass of all classes representing an input stream of bytes. 
InputStreamReader An InputStreamReader is a bridge from byte streams to character streams: It reads bytes and decodes them into characters using a specified charset
InputTransferToken A token that can be used to request focus on or to transfer touch gesture to a SurfaceControlViewHost or SurfaceControl that has an input channel. 
InputType Bit definitions for an integer defining the basic content type of text held in an Editable object. 
InsertGesture A sub-class of HandwritingGesture for inserting text at the defined insertion point. 
InsertGesture.Builder Builder for InsertGesture
InsertModeGesture A sub-class of HandwritingGesture for starting an insert mode which inserts a space in the editor to let users hand write freely at the designated insertion point. 
InsertModeGesture.Builder Builder for InsertModeGesture
InsertRecordsResponse Response for HealthConnectManager#insertRecords
InsetDrawable A Drawable that insets another Drawable by a specified distance or fraction of the content bounds. 
Insets An Insets instance holds four integer offsets which describe changes to the four edges of a Rectangle. 
InspectionCompanion<T> An interface for companion objects used to inspect views. 
InspectionCompanion.UninitializedPropertyMapException Thrown by InspectionCompanion.readProperties(java.lang.Object, android.view.inspector.PropertyReader) if called before InspectionCompanion.mapProperties(android.view.inspector.PropertyMapper)
InspectionCompanionProvider An interface for services that can provide inspection companions for a class. 
InstallSourceInfo Information about how an app was installed. 
InstanceCountViolation  
Instant An instantaneous point on the time-line. 
InstantiationError Thrown when an application tries to use the Java new construct to instantiate an abstract class or an interface. 
InstantiationException Thrown when an application tries to create an instance of a class using the newInstance method in class Class, but the specified class object cannot be instantiated. 
InstantRecord A record that contains a measurement recorded as an instance . 
InstantSource Provides access to the current instant. 
Instrumentation Base class for implementing application instrumentation code. 
Instrumentation.ActivityMonitor Information about a particular kind of Intent that is being monitored. 
Instrumentation.ActivityResult Description of a Activity execution result to return to the original activity. 
InstrumentationInfo Information you can retrieve about a particular piece of test instrumentation. 
InstrumentationTestCase This class was deprecated in API level 24. Use InstrumentationRegistry instead. New tests should be written using the AndroidX Test Library. 
InstrumentationTestRunner This class was deprecated in API level 24. Use AndroidJUnitRunner instead. New tests should be written using the Android Testing Support Library. 
InstrumentationTestSuite This class was deprecated in API level 24. Use InstrumentationRegistry instead. New tests should be written using the Android Testing Support Library. 
Int2 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Int3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Int4 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Int64Ref A signed 64bit integer reference suitable for passing to lower-level system calls. 
IntArrayEvaluator This evaluator can be used to perform type interpolation between int[] values. 
IntBinaryOperator Represents an operation upon two int-valued operands and producing an int-valued result. 
IntBuffer An int buffer. 
IntConsumer Represents an operation that accepts a single int-valued argument and returns no result. 
Integer The Integer class wraps a value of the primitive type int in an object. 
IntegerWidth A class that defines the strategy for padding and truncating integers before the decimal separator. 
Intent An intent is an abstract description of an operation to be performed. 
Intent.FilterComparison Wrapper class holding an Intent and implementing comparisons on it for the purpose of filtering. 
Intent.ShortcutIconResource Represents a shortcut/live folder icon resource. 
IntentFilter Structured description of Intent values to be matched. 
IntentFilter.AuthorityEntry This is an entry for a single authority in the Iterator returned by IntentFilter.authoritiesIterator()
IntentFilter.MalformedMimeTypeException This exception is thrown when a given MIME type does not have a valid syntax. 
IntentReceiverLeakedViolation  
IntentSender A description of an Intent and target action to perform with it. 
IntentSender.OnFinished Callback interface for discovering when a send operation has completed. 
IntentSender.SendIntentException Exception thrown when trying to send through a PendingIntent that has been canceled or is otherwise no longer able to execute the request. 
IntentService This class was deprecated in API level 30. IntentService is subject to all the background execution limits imposed with Android 8.0 (API level 26). Consider using WorkManager instead. 
InterfaceAddress This class represents a Network Interface address. 
IntermenstrualBleedingRecord Captures the user's inter-menstrual bleeding. 
IntermenstrualBleedingRecord.Builder Builder class for IntermenstrualBleedingRecord 
InternalError Thrown to indicate some unexpected internal error has occurred in the Java Virtual Machine. 
Interpolator  
Interpolator An interpolator defines the rate of change of an animation. 
Interpolator.Result  
InterruptedByTimeoutException Checked exception received by a thread when a timeout elapses before an asynchronous operation completes. 
InterruptedException Thrown when a thread is waiting, sleeping, or otherwise occupied, and the thread is interrupted, either before or during the activity. 
InterruptedIOException Signals that an I/O operation has been interrupted. 
InterruptibleChannel A channel that can be asynchronously closed and interrupted. 
IntervalRecord A record that contains a measurement with a time interval. 
IntEvaluator This evaluator can be used to perform type interpolation between int values. 
IntFlagMapping Maps the values of an int property to sets of string for properties that encode flags. 
IntFunction<R> Represents a function that accepts an int-valued argument and produces a result. 
IntPredicate Represents a predicate (boolean-valued function) of one int-valued argument. 
IntProperty<T> An implementation of Property to be used specifically with fields of type int
IntStream A sequence of primitive int-valued elements supporting sequential and parallel aggregate operations. 
IntStream.Builder A mutable builder for an IntStream
IntStream.IntMapMultiConsumer Represents an operation that accepts an int-valued argument and an IntConsumer, and returns no result. 
IntSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and average. 
IntSupplier Represents a supplier of int-valued results. 
IntToDoubleFunction Represents a function that accepts an int-valued argument and produces a double-valued result. 
IntToLongFunction Represents a function that accepts an int-valued argument and produces a long-valued result. 
IntUnaryOperator Represents an operation on a single int-valued operand that produces an int-valued result. 
InvalidAlgorithmParameterException This is the exception for invalid or inappropriate algorithm parameters. 
InvalidClassException Thrown when the Serialization runtime detects one of the following problems with a Class. 
InvalidForegroundServiceTypeException Exception thrown when an app tries to start a foreground Service with an invalid type. 
InvalidKeException This exception is thrown when the remote server expected a different Diffie-Hellman group. 
InvalidKeyException This is the exception for invalid Keys (invalid encoding, wrong length, uninitialized, etc). 
InvalidKeySpecException This is the exception for invalid key specifications. 
InvalidMajorVersionException This exception is thrown when major version of an inbound message is higher than 2. 
InvalidMarkException Unchecked exception thrown when an attempt is made to reset a buffer when its mark is not defined. 
InvalidObjectException Indicates that one or more deserialized objects failed validation tests. 
InvalidParameterException This exception, designed for use by the JCA/JCE engine classes, is thrown when an invalid parameter is passed to a method. 
InvalidParameterSpecException This is the exception for invalid parameter specifications. 
InvalidPathException Unchecked exception thrown when path string cannot be converted into a Path because the path string contains invalid characters, or the path string is invalid for other file system specific reasons. 
InvalidPreferencesFormatException Thrown to indicate that an operation could not complete because the input did not conform to the appropriate XML document type for a collection of preferences, as per the Preferences specification. 
InvalidPropertiesFormatException Thrown to indicate that an operation could not complete because the input did not conform to the appropriate XML document type for a collection of properties, as per the Properties specification. 
InvalidReaderSignatureException Thrown if the reader signature is invalid, or it doesn't contain a certificate chain, or if the signature failed to validate. 
InvalidRequestMessageException Thrown if message with the request doesn't satisfy the requirements documented in IdentityCredential#getEntries(byte[], Map, byte[], byte[])
InvalidSelectorsException This exception is thrown if the remote server received an IPsec packet with mismatched selectors. 
InvocationHandler InvocationHandler is the interface implemented by the invocation handler of a proxy instance. 
InvocationTargetException InvocationTargetException is a checked exception that wraps an exception thrown by an invoked method or constructor. 
IOError Thrown when a serious I/O error has occurred. 
IOException Signals that an I/O exception of some sort has occurred. 
IpConfiguration A class representing the IP configuration of a network. 
IpConfiguration.Builder Builder used to construct IpConfiguration objects. 
IpPrefix This class represents an IP prefix, i.e., a contiguous block of IP addresses aligned on a power of two boundary (also known as an "IP subnet"). 
IpSecAlgorithm This class represents a single algorithm that can be used by an IpSecTransform
IpSecManager This class contains methods for managing IPsec sessions. 
IpSecManager.ResourceUnavailableException Thrown to indicate that an IPsec resource is unavailable. 
IpSecManager.SecurityParameterIndex This class represents a reserved SPI. 
IpSecManager.SpiUnavailableException Thrown to indicate that a requested SPI is in use. 
IpSecManager.UdpEncapsulationSocket This class provides access to a UDP encapsulation Socket. 
IpSecTransform This class represents a transform, which roughly corresponds to an IPsec Security Association. 
IpSecTransform.Builder This class is used to build IpSecTransform objects. 
IpSecTransformState This class represents a snapshot of the state of an IpSecTransform

This class provides the current state of an IpSecTransform, enabling link metric analysis by the caller. 

IpSecTransformState.Builder Builder class for testing purposes

Except for testing, IPsec callers normally do not instantiate IpSecTransformState themselves but instead get a reference via IpSecTransformState 

IslamicCalendar IslamicCalendar is a subclass of Calendar that that implements the Islamic civil and religious calendars. 
IslamicCalendar.CalculationType enumeration of available calendar calculation types 
IsoChronology The ISO calendar system. 
IsoDep Provides access to ISO-DEP (ISO 14443-4) properties and I/O operations on a Tag
IsoEra An era in the ISO calendar system. 
IsoFields Fields and units specific to the ISO-8601 calendar system, including quarter-of-year and week-based-year. 
IsolatedContext This class was deprecated in API level 24. New tests should be written using the Android Testing Support Library. 
IsolatedService Base class for services that are started by ODP on a call to OnDevicePersonalizationManager#execute(ComponentName, PersistableBundle, java.util.concurrent.Executor, OutcomeReceiver) and run in an isolated process
IsolatedServiceException A class that an IsolatedService can use to signal a failure in handling a request and return an error to be logged and aggregated. 
IsolatedWorker Interface with methods that need to be implemented to handle requests from the OnDevicePersonalization service to an IsolatedService
Iterable<T> Implementing this interface allows an object to be the target of the enhanced for statement (sometimes called the "for-each loop" statement). 
Iterator<E> An iterator over a collection. 
IvParameterSpec This class specifies an initialization vector (IV). 

J

JapaneseCalendar JapaneseCalendar is a subclass of GregorianCalendar that numbers years and eras based on the reigns of the Japanese emperors. 
JapaneseChronology The Japanese Imperial calendar system. 
JapaneseDate A date in the Japanese Imperial calendar system. 
JapaneseEra An era in the Japanese Imperial calendar system. 
JarEntry This class is used to represent a JAR file entry. 
JarException Signals that an error of some sort has occurred while reading from or writing to a JAR file. 
JarFile The JarFile class is used to read the contents of a jar file from any file that can be opened with java.io.RandomAccessFile
JarInputStream The JarInputStream class is used to read the contents of a JAR file from any input stream. 
JarOutputStream The JarOutputStream class is used to write the contents of a JAR file to any output stream. 
JarURLConnection A URL Connection to a Java ARchive (JAR) file or an entry in a JAR file. 
JavascriptInterface Annotation that allows exposing methods to JavaScript. 
JetPlayer JetPlayer provides access to JET content playback and control. 
JetPlayer.OnJetEventListener Handles the notification when the JET engine generates an event. 
JobInfo Container of data passed to the JobScheduler fully encapsulating the parameters required to schedule work against the calling application. 
JobInfo.Builder Builder class for constructing JobInfo objects. 
JobInfo.TriggerContentUri Information about a content URI modification that a job would like to trigger on. 
JobParameters Contains the parameters used to configure/identify your job. 
JobScheduler This is an API for scheduling various types of jobs against the framework that will be executed in your application's own process. 
JobService

Entry point for the callback from the JobScheduler

JobServiceEngine Helper for implementing a Service that interacts with JobScheduler
JobWorkItem A unit of work that can be enqueued for a job using JobScheduler.enqueue
JobWorkItem.Builder Builder class for constructing JobWorkItem objects. 
JoinCustomAudienceRequest The request object to join a custom audience. 
JoinCustomAudienceRequest.Builder Builder for JoinCustomAudienceRequest objects. 
JoinOrSplitGesture A subclass of HandwritingGesture for deleting or inserting whitespace in text. 
JoinOrSplitGesture.Builder Builder for JoinOrSplitGesture
JoinSpec This class represents the specifications for the joining operation in search. 
JoinSpec.Builder Builder for objects
JSONArray A dense indexed sequence of values. 
JSONException Thrown to indicate a problem with the JSON API. 
JSONObject A modifiable set of name/value mappings. 
JsonReader Reads a JSON (RFC 4627) encoded value as a stream of tokens. 
JSONStringer Implements JSONObject#toString and JSONArray#toString
JsonToken A structure, name or value type in a JSON-encoded string. 
JSONTokener Parses a JSON (RFC 4627) encoded string into the corresponding object. 
JsonWriter Writes a JSON (RFC 4627) encoded value to a stream, one token at a time. 
JsPromptResult Public class for handling JavaScript prompt requests. 
JsResult An instance of this class is passed as a parameter in various WebChromeClient action notifications. 
JulianFields A set of date fields that provide access to Julian Days. 

K

Key The Key interface is the top-level interface for all keys. 
KeyAgreement This class provides the functionality of a key agreement (or key exchange) protocol. 
KeyAgreementSpi This class defines the Service Provider Interface (SPI) for the KeyAgreement class. 
Keyboard This class was deprecated in API level 29. This class is deprecated because this is just a convenient UI widget class that application developers can re-implement on top of existing public APIs. If you have already depended on this class, consider copying the implementation from AOSP into your project or re-implementing a similar widget by yourselves 
Keyboard.Key Class for describing the position and characteristics of a single key in the keyboard. 
Keyboard.Row Container for keys in the keyboard. 
KeyboardShortcutGroup A group of KeyboardShortcutInfo
KeyboardShortcutInfo Information about a Keyboard Shortcut. 
KeyboardView This class was deprecated in API level 29. This class is deprecated because this is just a convenient UI widget class that application developers can re-implement on top of existing public APIs. If you have already depended on this class, consider copying the implementation from AOSP into your project or re-implementing a similar widget by yourselves 
KeyboardView.OnKeyboardActionListener Listener for virtual keyboard events. 
KeyChain The KeyChain class provides access to private keys and their corresponding certificate chains in credential storage. 
KeyChainAliasCallback The KeyChainAliasCallback is the callback for KeyChain.choosePrivateKeyAlias(Activity, KeyChainAliasCallback, String, Principal, Uri, String)
KeyChainException Thrown on problems accessing the KeyChain
KeyCharacterMap Describes the keys provided by a keyboard device and their associated labels. 
KeyCharacterMap.KeyData This class was deprecated in API level 11. instead use KeyCharacterMap#getDisplayLabel(int), KeyCharacterMap#getNumber(int) and KeyCharacterMap#get(int, int). 
KeyCharacterMap.UnavailableException Thrown by KeyCharacterMap#load when a key character map could not be loaded. 
KeyedFrequencyCap A frequency cap for a specific ad counter key. 
KeyedFrequencyCap.Builder Builder for creating KeyedFrequencyCap objects. 
KeyEvent Object used to report key and button events. 
KeyEvent.Callback  
KeyEvent.DispatcherState Use with KeyEvent#dispatch(Callback, DispatcherState, Object) for more advanced key dispatching, such as long presses. 
KeyException This is the basic key exception. 
KeyExpiredException Indicates that a cryptographic operation failed because the employed key's validity end date is in the past. 
KeyFactory Key factories are used to convert keys (opaque cryptographic keys of type Key) into key specifications (transparent representations of the underlying key material), and vice versa. 
KeyFactorySpi This class defines the Service Provider Interface (SPI) for the KeyFactory class. 
Keyframe This class holds a time/value pair for an animation. 
KeyGenerator This class provides the functionality of a secret (symmetric) key generator. 
KeyGeneratorSpi This class defines the Service Provider Interface (SPI) for the KeyGenerator class. 
KeyGenParameterSpec AlgorithmParameterSpec for initializing a KeyPairGenerator or a KeyGenerator of the Android Keystore system
KeyGenParameterSpec.Builder Builder of KeyGenParameterSpec instances. 
KeyguardManager Class to manage and query the state of the lock screen (also known as Keyguard). 
KeyguardManager.KeyguardDismissCallback Callback passed to KeyguardManager#requestDismissKeyguard(Activity, KeyguardDismissCallback) to notify caller of result. 
KeyguardManager.KeyguardLock This class was deprecated in API level 15. Use R.attr.showWhenLocked or Activity.setShowWhenLocked(boolean) instead. This allows you to seamlessly occlude and unocclude the keyguard as your application moves in and out of the foreground and does not require that any special permissions be requested. 
KeyguardManager.KeyguardLockedStateListener Listener for keyguard locked state changes. 
KeyguardManager.OnKeyguardExitResult This interface was deprecated in API level 26. Use KeyguardDismissCallback 
KeyInfo Information about a key from the Android Keystore system
KeyListener Interface for converting text key events into edit operations on an Editable class. 
KeyManagementException This is the general key management exception for all operations dealing with key management. 
KeyManager This is the base interface for JSSE key managers. 
KeyManagerFactory This class acts as a factory for key managers based on a source of key material. 
KeyManagerFactorySpi This class defines the Service Provider Interface (SPI) for the KeyManagerFactory class. 
KeyNotYetValidException Indicates that a cryptographic operation failed because the employed key's validity start date is in the future. 
KeyPair This class is a simple holder for a key pair (a public key and a private key). 
KeyPairGenerator The KeyPairGenerator class is used to generate pairs of public and private keys. 
KeyPairGeneratorSpec This class was deprecated in API level 23. Use KeyGenParameterSpec instead. 
KeyPairGeneratorSpec.Builder This class was deprecated in API level 23. Use KeyGenParameterSpec.Builder instead. 
KeyPairGeneratorSpi

This class defines the Service Provider Interface (SPI) for the KeyPairGenerator class, which is used to generate pairs of public and private keys. 

KeyPermanentlyInvalidatedException Indicates that the key can no longer be used because it has been permanently invalidated. 
KeyProperties Properties of Android Keystore keys. 
KeyProtection Specification of how a key or key pair is secured when imported into the Android Keystore system
KeyProtection.Builder Builder of KeyProtection instances. 
KeyRep Standardized representation for serialized Key objects. 
KeyRep.Type Key type. 
KeySpec A (transparent) specification of the key material that constitutes a cryptographic key. 
KeyStore This class represents a storage facility for cryptographic keys and certificates. 
KeyStore.Builder A description of a to-be-instantiated KeyStore object. 
KeyStore.CallbackHandlerProtection A ProtectionParameter encapsulating a CallbackHandler. 
KeyStore.Entry A marker interface for KeyStore entry types. 
KeyStore.Entry.Attribute An attribute associated with a keystore entry. 
KeyStore.LoadStoreParameter A marker interface for KeyStore load and store parameters. 
KeyStore.PasswordProtection A password-based implementation of ProtectionParameter
KeyStore.PrivateKeyEntry A KeyStore entry that holds a PrivateKey and corresponding certificate chain. 
KeyStore.ProtectionParameter A marker interface for keystore protection parameters. 
KeyStore.SecretKeyEntry A KeyStore entry that holds a SecretKey
KeyStore.TrustedCertificateEntry A KeyStore entry that holds a trusted Certificate
KeyStoreBuilderParameters A parameters object for X509KeyManagers that encapsulates a List of KeyStore.Builders. 
KeyStoreException Exception containing information about the failure at the Keystore / KeyMint layer while generating or using a key. 
KeyStoreException This is the generic KeyStore exception. 
KeyStoreParameter This class was deprecated in API level 23. Use KeyProtection instead. 
KeyStoreParameter.Builder This class was deprecated in API level 23. Use KeyProtection.Builder instead. 
KeyStoreSpi This class defines the Service Provider Interface (SPI) for the KeyStore class. 
KeyValueStore An interface to a read-only key-value store. 

L

LabeledIntent A special subclass of Intent that can have a custom label/icon associated with it. 
LambdaConversionException LambdaConversionException 
LargeTest This @interface was deprecated in API level 24. Use LargeTest instead. New tests should be written using the Android Testing Support Library. 
LastOwnerException This class was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
LauncherActivity This class was deprecated in API level 30. Applications can implement this UI themselves using RecyclerView and PackageManager.queryIntentActivities(Intent, int) 
LauncherActivity.IconResizer Utility class to resize icons to match default icon size. 
LauncherActivity.ListItem An item in the list 
LauncherActivityInfo A representation of an activity that can belong to this user or a managed profile associated with this user. 
LauncherApps Class for retrieving a list of launchable activities for the current user and any associated managed profiles that are visible to the current user, which can be retrieved with getProfiles()
LauncherApps.ArchiveCompatibilityParams Used to enable Archiving compatibility options with LauncherApps.setArchiveCompatibility(ArchiveCompatibilityParams)
LauncherApps.Callback Callbacks for package changes to this and related managed profiles. 
LauncherApps.PinItemRequest Represents a "pin shortcut" or a "pin appwidget" request made by an app, which is sent with an LauncherApps.ACTION_CONFIRM_PIN_SHORTCUT or LauncherApps.ACTION_CONFIRM_PIN_APPWIDGET intent respectively to the default launcher app. 
LauncherApps.ShortcutQuery Represents a query passed to LauncherApps.getShortcuts(android.content.pm.LauncherApps.ShortcutQuery, android.os.UserHandle)
LauncherUserInfo The LauncherUserInfo object holds information about an Android user that is required to display the Launcher related UI elements specific to the user (like badges). 
LaunchPerformanceBase Base class for all launch performance Instrumentation classes. 
LayerDrawable A Drawable that manages an array of other Drawables. 
LayeredSocketFactory This interface was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
Layout A base class that manages text layout in visual elements on the screen. 
Layout.Alignment  
Layout.Builder A builder class for Layout object. 
Layout.Directions Stores information about bidirectional (left-to-right or right-to-left) text within the layout of a line. 
Layout.TextInclusionStrategy Strategy for determining whether a text segment is inside a rectangle area. 
LayoutAnimationController A layout animation controller is used to animate the children of a layout or a view group. 
LayoutAnimationController.AnimationParameters The set of parameters that has to be attached to each view contained in the view group animated by the layout animation controller. 
LayoutDirection A class for defining layout directions. 
LayoutInflater Instantiates a layout XML file into its corresponding View objects. 
LayoutInflater.Factory  
LayoutInflater.Factory2  
LayoutInflater.Filter Hook to allow clients of the LayoutInflater to restrict the set of Views that are allowed to be inflated. 
LayoutTransition This class enables automatic animations on layout changes in ViewGroup objects. 
LayoutTransition.TransitionListener This interface is used for listening to starting and ending events for transitions. 
LDAPCertStoreParameters Parameters used as input for the LDAP CertStore algorithm. 
LeadingMarginSpan A paragraph style affecting the leading margin. 
LeadingMarginSpan.LeadingMarginSpan2 An extended version of LeadingMarginSpan, which allows the implementor to specify the number of lines of the paragraph to which this object is attached that the "first line of paragraph" margin width will be applied to. 
LeadingMarginSpan.Standard The standard implementation of LeadingMarginSpan, which adjusts the margin but does not do any rendering. 
LeakedClosableViolation  
LeanBodyMassRecord Captures the user's lean body mass. 
LeanBodyMassRecord.Builder Builder class for LeanBodyMassRecord 
LeaveCustomAudienceRequest The request object is used to leave a custom audience. 
LeaveCustomAudienceRequest.Builder Builder for LeaveCustomAudienceRequest objects. 
Length Represents a unit of length. 
LensIntrinsicsSample Immutable class to store an lens intrinsics intra-frame sample
LensShadingMap Immutable class for describing a 4 x N x M lens shading map of floats. 
Level The Level class defines a set of standard logging levels that can be used to control logging output. 
LevelListDrawable A resource that manages a number of alternate Drawables, each assigned a maximum numerical value. 
LexicalHandler SAX2 extension handler for lexical events. 
Light Represents a logical light on the device. 
LightingColorFilter A color filter that can be used to simulate simple lighting effects. 
LightsManager The LightsManager class allows control over device lights. 
LightsManager.LightsSession Encapsulates a session that can be used to control device lights and represents the lifetime of the requests. 
LightsRequest Encapsulates a request to modify the state of multiple lights. 
LightsRequest.Builder Builder for creating device light change requests. 
LightState Represents the state of a device light. 
LightState.Builder Builder for creating device light change requests. 
LimitExceededException Indicates that the app has exceeded a limit set by the System. 
LinearGradient  
LinearInterpolator An interpolator where the rate of change is constant 
LinearLayout A layout that arranges other views either horizontally in a single column or vertically in a single row. 
LinearLayout.LayoutParams Per-child layout information associated with ViewLinearLayout. 
LineBackgroundSpan Used to change the background of lines where the span is attached to. 
LineBackgroundSpan.Standard Default implementation of the LineBackgroundSpan, which changes the background color of the lines to which the span is attached. 
LineBreakConfig Specifies the line-break strategies for text wrapping. 
LineBreakConfig.Builder A builder for creating a LineBreakConfig instance. 
LineBreakConfigSpan LineBreakSpan for changing line break style of the specific region of the text. 
LineBreaker Provides automatic line breaking for a single paragraph. 
LineBreaker.Builder Helper class for creating a LineBreaker
LineBreaker.ParagraphConstraints Line breaking constraints for single paragraph. 
LineBreaker.Result Holds the result of the line breaking algorithm
LineHeightSpan The classes that affect the line height of paragraph should implement this interface. 
LineHeightSpan.Standard Default implementation of the LineHeightSpan, which changes the line height of the attached paragraph. 
LineHeightSpan.WithDensity The classes that affect the line height of paragraph with respect to density, should implement this interface. 
LineNumberInputStream This class was deprecated in API level 1. This class incorrectly assumes that bytes adequately represent characters. As of JDK 1.1, the preferred way to operate on character streams is via the new character-stream classes, which include a class for counting line numbers. 
LineNumberReader A buffered character-input stream that keeps track of line numbers. 
LinkAddress Identifies an IP address on a network link. 
LinkageError Subclasses of LinkageError indicate that a class has some dependency on another class; however, the latter class has incompatibly changed after the compilation of the former class. 
LinkedBlockingDeque<E> An optionally-bounded blocking deque based on linked nodes. 
LinkedBlockingQueue<E> An optionally-bounded blocking queue based on linked nodes. 
LinkedHashMap<K, V>

Hash table and linked list implementation of the Map interface, with well-defined encounter order. 

LinkedHashSet<E>

Hash table and linked list implementation of the Set interface, with well-defined encounter order. 

LinkedList<E> Doubly-linked list implementation of the List and Deque interfaces. 
LinkedTransferQueue<E> An unbounded TransferQueue based on linked nodes. 
Linkify Linkify take a piece of text and a regular expression and turns all of the regex matches in the text into clickable links. 
Linkify.MatchFilter MatchFilter enables client code to have more control over what is allowed to match and become a link, and what is not. 
Linkify.TransformFilter TransformFilter enables client code to have more control over how matched patterns are represented as URLs. 
LinkMovementMethod A movement method that traverses links in the text buffer and scrolls if necessary. 
LinkOption Defines the options as to how symbolic links are handled. 
LinkPermission The Permission class for link creation operations. 
LinkProperties Describes the properties of a network link. 
List<E> An ordered collection, where the user has precise control over where in the list each element is inserted. 
ListActivity This class was deprecated in API level 30. Use ListFragment or RecyclerView to implement your Activity instead. 
ListAdapter Extended Adapter that is the bridge between a ListView and the data that backs the list. 
ListFormatter Immutable class for formatting a list, using data from CLDR (or supplied separately). 
ListFormatter.FormattedList An immutable class containing the result of a list formatting operation. 
ListFormatter.Type Type of meaning expressed by the list. 
ListFormatter.Width Verbosity level of the list patterns. 
ListFragment This class was deprecated in API level 28. Use the Support Library ListFragment for consistent behavior across all devices and access to Lifecycle. 
ListItem Represents a single option in a combo box or list box PDF form widget. 
ListIterator<E> An iterator for lists that allows the programmer to traverse the list in either direction, modify the list during iteration, and obtain the iterator's current position in the list. 
ListPopupWindow A ListPopupWindow anchors itself to a host view and displays a list of choices. 
ListPreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
ListResourceBundle ListResourceBundle is an abstract subclass of ResourceBundle that manages resources for a locale in a convenient and easy to use list. 
ListView

Displays a vertically-scrollable collection of views, where each view is positioned immediatelybelow the previous view in the list. 

ListView.FixedViewInfo A class that represents a fixed view in a list, for example a header at the top or a footer at the bottom. 
LiveFolders This class was deprecated in API level 14. Live folders are no longer supported by Android. These have been replaced by the new AppWidget Collection APIs introduced in Build.VERSION_CODES.HONEYCOMB. These provide all of the features of live folders plus many more. The use of live folders is greatly discouraged because of security issues they introduce -- publishing a live folder requires making all data show for the live folder available to all applications with no permissions protecting it. 
Loader<D> This class was deprecated in API level 28. Use the Support Library Loader 
Loader.ForceLoadContentObserver This class was deprecated in API level 28. Use Loader.ForceLoadContentObserver 
Loader.OnLoadCanceledListener<D> This interface was deprecated in API level 28. Use Loader.OnLoadCanceledListener 
Loader.OnLoadCompleteListener<D> This interface was deprecated in API level 28. Use Loader.OnLoadCompleteListener 
LoaderManager This class was deprecated in API level 28. Use the Support Library LoaderManager 
LoaderManager.LoaderCallbacks<D> This interface was deprecated in API level 28. Use the Support Library LoaderManager.LoaderCallbacks 
LoaderTestCase A convenience class for testing Loaders. 
LoadParams Represents a set of parameters to load the PDF document. 
LoadParams.Builder Builder for constructing LoadParams
LoadSdkException Exception thrown by SdkSandboxManager#loadSdk 
LocalActivityManager This class was deprecated in API level 13. Use the new Fragment and FragmentManager APIs instead; these are also available on older platforms through the Android compatibility package. 
LocalDate A date without a time-zone in the ISO-8601 calendar system, such as 2007-12-03
LocalDateTime A date-time without a time-zone in the ISO-8601 calendar system, such as 2007-12-03T10:15:30
Locale A Locale object represents a specific geographical, political, or cultural region. 
Locale.Builder Builder is used to build instances of Locale from values configured by the setters. 
Locale.Category Enum for locale categories. 
Locale.FilteringMode This enum provides constants to select a filtering mode for locale matching. 
Locale.IsoCountryCode Enum for specifying the type defined in ISO 3166. 
Locale.LanguageRange This class expresses a Language Range defined in RFC 4647 Matching of Language Tags
LocaleConfig The LocaleConfig of an application. 
LocaleData A class for accessing miscellaneous data in the locale bundles 
LocaleData.MeasurementSystem Enumeration for representing the measurement systems. 
LocaleData.PaperSize A class that represents the size of letter head used in the country 
LocaleDisplayNames Returns display names of ULocales and components of ULocales. 
LocaleDisplayNames.DialectHandling Enum used in LocaleDisplayNames.getInstance(android.icu.util.ULocale, android.icu.text.LocaleDisplayNames.DialectHandling)
LocaleDisplayNames.UiListItem Struct-like class used to return information for constructing a UI list, each corresponding to a locale. 
LocaleList LocaleList is an immutable list of Locales, typically used to keep an ordered list of user preferences for locales. 
LocaleManager This class gives access to system locale services. 
LocaleSpan Changes the Locale of the text to which the span is attached. 
LocalizedNumberFormatter A NumberFormatter that has a locale associated with it; this means .format() methods are available. 
LocalizedNumberRangeFormatter A NumberRangeFormatter that has a locale associated with it; this means .formatRange() methods are available. 
LocalServerSocket Non-standard class for creating an inbound UNIX-domain socket in the Linux abstract namespace. 
LocalSocket Creates a (non-server) socket in the UNIX-domain namespace. 
LocalSocketAddress A UNIX-domain (AF_LOCAL) socket address. 
LocalSocketAddress.Namespace The namespace that this address exists in. 
LocalTime A time without a time-zone in the ISO-8601 calendar system, such as 10:15:30
LocalTimeRangeFilter Specification of local time range for health connect requests. 
LocalTimeRangeFilter.Builder Builder class for LocalTimeRangeFilter 
Location A data class representing a geographic location. 
LocationListener Used for receiving notifications when the device location has changed. 
LocationManager This class provides access to the system location services. 
LocationProvider This class was deprecated in API level 31. This class is incapable of representing unknown provider properties and may return incorrect results on the rare occasion when a provider's properties are unknown. Prefer using LocationManager#getProviderProperties(String) to retrieve ProviderProperties instead. 
LocationRequest An encapsulation of various parameters for requesting location via LocationManager
LocationRequest.Builder A builder class for LocationRequest
Locator Interface for associating a SAX event with a document location. 
Locator2 SAX2 extension to augment the entity information provided though a Locator
Locator2Impl SAX2 extension helper for holding additional Entity information, implementing the Locator2 interface. 
LocatorImpl Provide an optional convenience implementation of Locator. 
Lock Lock implementations provide more extensive locking operations than can be obtained using synchronized methods and statements. 
LockSupport Basic thread blocking primitives for creating locks and other synchronization classes. 
LocusId An identifier for an unique state (locus) in the application. 
Log API for sending log output. 
Logger A Logger object is used to log messages for a specific system or application component. 
LoggingMXBean The management interface for the logging facility. 
LoggingPermission Legacy security code; do not use. 
LoginException This is the basic login exception. 
LoginFilter This class was deprecated in API level 30. Password requirements should not be hardcoded in clients. This class also does not handle non-BMP characters. 
LoginFilter.PasswordFilterGMail This class was deprecated in API level 30. Do not handle a user's Google password. Refer to Google Help for password restriction information. 
LoginFilter.UsernameFilterGeneric This filter rejects characters in the user name that are not compatible with Google login. 
LoginFilter.UsernameFilterGMail This class was deprecated in API level 30. Do not encode assumptions about Google account names into client applications. 
LogManager There is a single global LogManager object that is used to maintain a set of shared state about Loggers and log services. 
LogPrinter Implementation of a Printer that sends its output to the system log. 
LogReader An interface to a read logs from REQUESTS and EVENTS Used as a Data Access Object for the REQUESTS and EVENTS table. 
LogRecord LogRecord objects are used to pass logging requests between the logging framework and individual log Handlers. 
LogSessionId An instances of this class represents the ID of a log session. 
Long The Long class wraps a value of the primitive type long in an object. 
Long2 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Long3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Long4 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
LongAccumulator One or more variables that together maintain a running long value updated using a supplied function. 
LongAdder One or more variables that together maintain an initially zero long sum. 
LongBinaryOperator Represents an operation upon two long-valued operands and producing a long-valued result. 
LongBuffer A long buffer. 
LongConsumer Represents an operation that accepts a single long-valued argument and returns no result. 
LongFunction<R> Represents a function that accepts a long-valued argument and produces a result. 
LongPredicate Represents a predicate (boolean-valued function) of one long-valued argument. 
LongSparseArray<E> SparseArray mapping longs to Objects. 
LongStream A sequence of primitive long-valued elements supporting sequential and parallel aggregate operations. 
LongStream.Builder A mutable builder for a LongStream
LongStream.LongMapMultiConsumer Represents an operation that accepts a long-valued argument and a LongConsumer, and returns no result. 
LongSummaryStatistics A state object for collecting statistics such as count, min, max, sum, and average. 
LongSupplier Represents a supplier of long-valued results. 
LongToDoubleFunction Represents a function that accepts a long-valued argument and produces a double-valued result. 
LongToIntFunction Represents a function that accepts a long-valued argument and produces an int-valued result. 
LongUnaryOperator Represents an operation on a single long-valued operand that produces a long-valued result. 
Looper Class used to run a message loop for a thread. 
LoudnessCodecController Class for getting recommended loudness parameter updates for audio decoders as they are used to play back media content according to the encoded format and current audio routing. 
LoudnessCodecController.OnLoudnessCodecUpdateListener Listener used for receiving asynchronous loudness metadata updates. 
LoudnessEnhancer LoudnessEnhancer is an audio effect for increasing audio loudness. 
LruCache<K, V> A cache that holds strong references to a limited number of values. 
LSException Parser or write operations may throw an LSException if the processing is stopped. 
LSInput This interface represents an input source for data. 
LSOutput This interface represents an output destination for data. 
LSParser An interface to an object that is able to build, or augment, a DOM tree from various input sources. 
LSParserFilter LSParserFilters provide applications the ability to examine nodes as they are being constructed while parsing. 
LSResourceResolver LSResourceResolver provides a way for applications to redirect references to external resources. 
LSSerializer A LSSerializer provides an API for serializing (writing) a DOM document out into XML. 
LuhnChecksumValidator Validator that returns true if the number created by concatenating all given fields pass a Luhn algorithm checksum. 

M

Mac This class provides the functionality of a "Message Authentication Code" (MAC) algorithm. 
MacAddress Representation of a MAC address. 
MacSpi This class defines the Service Provider Interface (SPI) for the Mac class. 
MagnificationConfig This class describes the magnification config for AccessibilityService to control the magnification. 
MagnificationConfig.Builder Builder for creating MagnificationConfig objects. 
Magnifier Android magnifier widget. 
Magnifier.Builder Builder class for Magnifier objects. 
MailTo MailTo URL parser This class parses a mailto scheme URL and then can be queried for the parsed parameters. 
MalformedInputException Checked exception thrown when an input byte sequence is not legal for given charset, or an input character sequence is not a legal sixteen-bit Unicode sequence. 
MalformedJsonException Thrown when a reader encounters malformed JSON. 
MalformedParameterizedTypeException Thrown when a semantically malformed parameterized type is encountered by a reflective method that needs to instantiate it. 
MalformedParametersException Thrown when the java.lang.reflect package attempts to read method parameters from a class file and determines that one or more parameters are malformed. 
MalformedURLException Thrown to indicate that a malformed URL has occurred. 
ManagedSubscriptionsPolicy A policy class that describes how managed SIM subscriptions should behave on the device. 
ManagerFactoryParameters This class is the base interface for providing algorithm-specific information to a KeyManagerFactory or TrustManagerFactory. 
MandatoryStreamCombination Immutable class to store the available mandatory stream combination. 
MandatoryStreamCombination.MandatoryStreamInformation Immutable class to store available mandatory stream information. 
Manifest  
Manifest The Manifest class is used to maintain Manifest entry names and their associated Attributes. 
Manifest.permission  
Manifest.permission_group  
Map<K, V> An object that maps keys to values. 
Map.Entry<K, V> A map entry (key-value pair). 
MappedByteBuffer A direct byte buffer whose content is a memory-mapped region of a file. 
MaskFilter MaskFilter is the base class for object that perform transformations on an alpha-channel mask before drawing it. 
MaskFilterSpan Span that allows setting a MaskFilter to the text it's attached to. 
Mass Represents a unit of mass. 
Matcher An engine that performs match operations on a character sequence by interpreting a Pattern
MatchResult The result of a match operation. 
Math The class Math contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions. 
MathContext The MathContext immutable class encapsulates the settings understood by the operator methods of the BigDecimal class (and potentially other classes). 
MathContext Immutable objects which encapsulate the context settings which describe certain rules for numerical operators, such as those implemented by the BigDecimal class. 
Matrix The Matrix class holds a 3x3 matrix for transforming coordinates. 
Matrix Matrix math utilities. 
Matrix.ScaleToFit Controls how the src rect should align into the dst rect for setRectToRect(). 
Matrix2f This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Matrix3f This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Matrix44 The Matrix44 class holds a 4x4 matrix for transforming coordinates. 
Matrix4f This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
MatrixCursor A mutable cursor implementation backed by an array of Objects. 
MatrixCursor.RowBuilder Builds a row of values using either of these approaches:
  • Values can be added with explicit column ordering using add(java.lang.Object), which starts from the left-most column and adds one column value at a time. 
MbmsDownloadReceiver The BroadcastReceiver responsible for handling intents sent from the middleware. 
MbmsDownloadSession This class provides functionality for file download over MBMS. 
MbmsDownloadSessionCallback A callback class that apps should use to receive information on file downloads over cell-broadcast. 
MbmsErrors  
MbmsErrors.DownloadErrors Indicates the errors that are applicable only to the file-download use-case 
MbmsErrors.GeneralErrors Indicates the errors that may occur at any point and are applicable to both streaming and file-download. 
MbmsErrors.GroupCallErrors Indicates the errors that are applicable only to the group call use-case. 
MbmsErrors.InitializationErrors Indicates errors that may be generated during initialization by the middleware. 
MbmsErrors.StreamingErrors Indicates the errors that are applicable only to the streaming use-case 
MbmsGroupCallSession This class provides functionality for accessing group call functionality over MBMS. 
MbmsGroupCallSessionCallback A callback class that is used to receive information from the middleware on MBMS group-call services. 
MbmsStreamingSession This class provides functionality for streaming media over MBMS. 
MbmsStreamingSessionCallback A callback class that is used to receive information from the middleware on MBMS streaming services. 
MealType Identifier for the meal type. 
Measure An amount of a specified unit, consisting of a Number and a Unit. 
MeasuredText Result of text shaping of the single paragraph string. 
MeasuredText.Builder Helper class for creating a MeasuredText
MeasureFormat A formatter for Measure objects. 
MeasureFormat.FormatWidth Formatting width enum. 
MeasurementManager MeasurementManager provides APIs to manage source and trigger registrations. 
MeasureUnit A unit such as length, mass, volume, currency, etc. 
MeasureUnit.Complexity Enumeration for unit complexity. 
MeasureUnit.MeasurePrefix Enumeration for SI and binary prefixes, e.g. "kilo-", "nano-", "mebi-". 
MediaActionSound

A class for producing sounds that match those produced by various actions taken by the media and camera APIs. 

MediaBrowser Browses media content offered by a link MediaBrowserService. 
MediaBrowser.ConnectionCallback Callbacks for connection related events. 
MediaBrowser.ItemCallback Callback for receiving the result of MediaBrowser.getItem(String, ItemCallback)
MediaBrowser.MediaItem A class with information on a single media item for use in browsing/searching media. 
MediaBrowser.SubscriptionCallback Callbacks for subscription related events. 
MediaBrowserService Base class for media browser services. 
MediaBrowserService.BrowserRoot Contains information that the browser service needs to send to the client when first connected. 
MediaBrowserService.Result<T> Completion handler for asynchronous callback methods in MediaBrowserService
MediaCas MediaCas can be used to obtain keys for descrambling protected media streams, in conjunction with MediaDescrambler
MediaCas.EventListener An interface registered by the caller to MediaCas.setEventListener(EventListener, Handler) to receives scheme-specific notifications from a MediaCas instance. 
MediaCas.PluginDescriptor Describe a CAS plugin with its CA_system_ID and string name. 
MediaCas.Session Class for an open session with the CA system. 
MediaCasException Base class for MediaCas exceptions 
MediaCasException.DeniedByServerException Exception thrown when the provisioning server or key server denies a license for a device. 
MediaCasException.InsufficientResourceException Exception thrown when an operation on a MediaCas object is attempted and hardware resources are not sufficient to allocate, due to client's lower priority. 
MediaCasException.NotProvisionedException Exception thrown when an operation on a MediaCas object is attempted before it's provisioned successfully. 
MediaCasException.ResourceBusyException Exception thrown when an operation on a MediaCas object is attempted and hardware resources are not available, due to being in use. 
MediaCasException.UnsupportedCasException Exception thrown when an attempt is made to construct a MediaCas object using a CA_system_id that is not supported by the device 
MediaCasStateException Base class for MediaCas runtime exceptions 
MediaCodec MediaCodec class can be used to access low-level media codecs, i.e. 
MediaCodec.BufferInfo Per buffer metadata includes an offset and size specifying the range of valid data in the associated codec (output) buffer. 
MediaCodec.Callback MediaCodec callback interface. 
MediaCodec.CodecException Thrown when an internal codec error occurs. 
MediaCodec.CryptoException Thrown when a crypto error occurs while queueing a secure input buffer. 
MediaCodec.CryptoInfo Metadata describing the structure of an encrypted input sample. 
MediaCodec.CryptoInfo.Pattern Metadata describing an encryption pattern for the protected bytes in a subsample. 
MediaCodec.IncompatibleWithBlockModelException Thrown when the codec is configured for block model and an incompatible API is called. 
MediaCodec.InvalidBufferFlagsException Thrown when a buffer is marked with an invalid combination of flags (e.g. both MediaCodec.BUFFER_FLAG_END_OF_STREAM and MediaCodec.BUFFER_FLAG_DECODE_ONLY
MediaCodec.LinearBlock Section of memory that represents a linear block. 
MediaCodec.MetricsConstants  
MediaCodec.OnFirstTunnelFrameReadyListener Listener to be called when the first output frame has been decoded and is ready to be rendered for a codec configured for tunnel mode with KEY_AUDIO_SESSION_ID
MediaCodec.OnFrameRenderedListener Listener to be called when an output frame has rendered on the output surface 
MediaCodec.OutputFrame A single output frame and its associated metadata. 
MediaCodec.ParameterDescriptor Contains description of a parameter. 
MediaCodec.QueueRequest Builder-like class for queue requests. 
MediaCodecInfo Provides information about a given media codec available on the device. 
MediaCodecInfo.AudioCapabilities A class that supports querying the audio capabilities of a codec. 
MediaCodecInfo.CodecCapabilities Encapsulates the capabilities of a given codec component. 
MediaCodecInfo.CodecProfileLevel Encapsulates the profiles available for a codec component. 
MediaCodecInfo.EncoderCapabilities A class that supports querying the encoding capabilities of a codec. 
MediaCodecInfo.VideoCapabilities A class that supports querying the video capabilities of a codec. 
MediaCodecInfo.VideoCapabilities.PerformancePoint Video performance points are a set of standard performance points defined by number of pixels, pixel rate and frame rate. 
MediaCodecList Allows you to enumerate available codecs, each specified as a MediaCodecInfo object, find a codec supporting a given format and query the capabilities of a given codec. 
MediaCommunicationManager Provides support for interacting with MediaSession2s that applications have published to express their ongoing media playback state. 
MediaController Allows an app to interact with an ongoing media session. 
MediaController A view containing controls for a MediaPlayer. 
MediaController.Callback Callback for receiving updates from the session. 
MediaController.MediaPlayerControl  
MediaController.PlaybackInfo Holds information about the current playback and how audio is handled for this session. 
MediaController.TransportControls Interface for controlling media playback on a session. 
MediaController2 This API is not generally intended for third party application developers. 
MediaController2.Builder This API is not generally intended for third party application developers. 
MediaController2.ControllerCallback This API is not generally intended for third party application developers. 
MediaCrypto MediaCrypto class can be used in conjunction with MediaCodec to decode encrypted media data. 
MediaCryptoException Exception thrown if MediaCrypto object could not be instantiated or if unable to perform an operation on the MediaCrypto object. 
MediaDataSource For supplying media data to the framework. 
MediaDescrambler MediaDescrambler class can be used in conjunction with MediaCodec and MediaExtractor to decode media data scrambled by conditional access (CA) systems such as those in the ISO/IEC13818-1. 
MediaDescription A simple set of metadata for a media item suitable for display. 
MediaDescription.Builder Builder for MediaDescription objects. 
MediaDrm MediaDrm can be used to obtain keys for decrypting protected media streams, in conjunction with MediaCrypto
MediaDrm.CryptoSession In addition to supporting decryption of DASH Common Encrypted Media, the MediaDrm APIs provide the ability to securely deliver session keys from an operator's session key server to a client device, based on the factory-installed root of trust, and then perform encrypt, decrypt, sign and verify operations with the session key on arbitrary user data. 
MediaDrm.ErrorCodes Error codes that may be returned from MediaDrm.MediaDrmStateException.getErrorCode() and MediaCodec.CryptoException.getErrorCode()

The description of each error code includes steps that may be taken to resolve the error condition. 

MediaDrm.KeyRequest Contains the opaque data an app uses to request keys from a license server. 
MediaDrm.KeyStatus Defines the status of a key. 
MediaDrm.LogMessage A LogMessage records an event in the MediaDrm framework or vendor plugin. 
MediaDrm.MediaDrmStateException Thrown when a general failure occurs during a MediaDrm operation. 
MediaDrm.MetricsConstants Definitions for the metrics that are reported via the MediaDrm.getMetrics() call. 
MediaDrm.OnEventListener Interface definition for a callback to be invoked when a drm event occurs 
MediaDrm.OnExpirationUpdateListener Interface definition for a callback to be invoked when a drm session expiration update occurs 
MediaDrm.OnKeyStatusChangeListener Interface definition for a callback to be invoked when the keys in a drm session change states. 
MediaDrm.OnSessionLostStateListener Interface definition for a callback to be invoked when the session state has been lost and is now invalid 
MediaDrm.PlaybackComponent This class contains the Drm session ID and log session ID 
MediaDrm.ProvisionRequest Contains the opaque data an app uses to request a certificate from a provisioning server 
MediaDrm.SessionException SessionException is a misnomer because it may occur in methods without a session context. 
MediaDrmException Base class for MediaDrm exceptions 
MediaDrmResetException This exception is thrown when the MediaDrm instance has become unusable due to a restart of the mediaserver process. 
MediaDrmThrowable A @Throwable thrown from MediaDrm or @MediaCrypto APIs 
MediaExtractor MediaExtractor facilitates extraction of demuxed, typically encoded, media data from a data source. 
MediaExtractor.CasInfo Describes the conditional access system used to scramble a track. 
MediaExtractor.MetricsConstants  
MediaFeature MediaFeature defines various media features, e.g. hdr type. 
MediaFeature.HdrType Defines the type of HDR (high dynamic range) video. 
MediaFormat Encapsulates the information describing the format of media data, be it audio or video, as well as optional feature metadata. 
MediaFormat.QpOffsetRect QpOffsetRect constitutes the metadata required for encoding a region of interest in an image or a video frame. 
MediaItemInfo Represents information about a piece of media (for example, an audio or video file). 
MediaItemInfo.Builder Builder for MediaItemInfo
MediaMetadata Contains metadata about an item, such as the title, artist, etc. 
MediaMetadata.Builder Use to build MediaMetadata objects. 
MediaMetadataEditor This class was deprecated in API level 21. Use MediaMetadata instead together with MediaSession. 
MediaMetadataRetriever MediaMetadataRetriever class provides a unified interface for retrieving frame and meta data from an input media file. 
MediaMetadataRetriever.BitmapParams  
MediaMetricsManager This class gives information about, and interacts with media metrics. 
MediaMuxer MediaMuxer facilitates muxing elementary streams. 
MediaMuxer.OutputFormat Defines the output format. 
MediaParser Parses media container formats and extracts contained media samples and metadata. 
MediaParser.InputReader Provides input data to MediaParser
MediaParser.OutputConsumer Receives extracted media sample data and metadata from MediaParser
MediaParser.ParsingException Thrown when an error occurs while parsing a media stream. 
MediaParser.SeekableInputReader InputReader that allows setting the read position. 
MediaParser.SeekMap Maps seek positions to SeekPoints in the stream. 
MediaParser.SeekPoint Defines a seek point in a media stream. 
MediaParser.TrackData Holds information associated with a track. 
MediaParser.UnrecognizedInputFormatException Thrown if all parser implementations provided to MediaParser.create(OutputConsumer, String) failed to sniff the input content. 
MediaPlayer MediaPlayer class can be used to control playback of audio/video files and streams. 
MediaPlayer.DrmInfo Encapsulates the DRM properties of the source. 
MediaPlayer.MetricsConstants  
MediaPlayer.NoDrmSchemeException Thrown when a DRM method is called before preparing a DRM scheme through prepareDrm(). 
MediaPlayer.OnBufferingUpdateListener Interface definition of a callback to be invoked indicating buffering status of a media resource being streamed over the network. 
MediaPlayer.OnCompletionListener Interface definition for a callback to be invoked when playback of a media source has completed. 
MediaPlayer.OnDrmConfigHelper Interface definition of a callback to be invoked when the app can do DRM configuration (get/set properties) before the session is opened. 
MediaPlayer.OnDrmInfoListener Interface definition of a callback to be invoked when the DRM info becomes available 
MediaPlayer.OnDrmPreparedListener Interface definition of a callback to notify the app when the DRM is ready for key request/response 
MediaPlayer.OnErrorListener Interface definition of a callback to be invoked when there has been an error during an asynchronous operation (other errors will throw exceptions at method call time). 
MediaPlayer.OnInfoListener Interface definition of a callback to be invoked to communicate some info and/or warning about the media or its playback. 
MediaPlayer.OnMediaTimeDiscontinuityListener Interface definition of a callback to be invoked when discontinuity in the normal progression of the media time is detected. 
MediaPlayer.OnPreparedListener Interface definition for a callback to be invoked when the media source is ready for playback. 
MediaPlayer.OnSeekCompleteListener Interface definition of a callback to be invoked indicating the completion of a seek operation. 
MediaPlayer.OnSubtitleDataListener Interface definition of a callback to be invoked when a player subtitle track has new subtitle data available. 
MediaPlayer.OnTimedMetaDataAvailableListener Interface definition of a callback to be invoked when a track has timed metadata available. 
MediaPlayer.OnTimedTextListener Interface definition of a callback to be invoked when a timed text is available for display. 
MediaPlayer.OnVideoSizeChangedListener Interface definition of a callback to be invoked when the video size is first known or updated 
MediaPlayer.ProvisioningNetworkErrorException Thrown when the device requires DRM provisioning but the provisioning attempt has failed due to a network error (Internet reachability, timeout, etc.). 
MediaPlayer.ProvisioningServerErrorException Thrown when the device requires DRM provisioning but the provisioning attempt has failed due to the provisioning server denying the request. 
MediaPlayer.TrackInfo Class for MediaPlayer to return each audio/video/subtitle track's metadata. 
MediaProjection A token granting applications the ability to capture screen contents and/or record system audio. 
MediaProjection.Callback Callbacks for the projection session. 
MediaProjectionConfig Configure the MediaProjection session requested from MediaProjectionManager#createScreenCaptureIntent(MediaProjectionConfig)
MediaProjectionManager Manages the retrieval of certain types of MediaProjection tokens. 
MediaRecorder Used to record audio and video. 
MediaRecorder.AudioEncoder Defines the audio encoding. 
MediaRecorder.AudioSource Defines the audio source. 
MediaRecorder.MetricsConstants  
MediaRecorder.OnErrorListener Interface definition for a callback to be invoked when an error occurs while recording. 
MediaRecorder.OnInfoListener Interface definition of a callback to be invoked to communicate some info and/or warning about the recording. 
MediaRecorder.OutputFormat Defines the output format. 
MediaRecorder.VideoEncoder Defines the video encoding. 
MediaRecorder.VideoSource Defines the video source. 
MediaRoute2Info Describes the properties of a route. 
MediaRoute2Info.Builder Builder for media route info
MediaRoute2ProviderService Base class for media route provider services. 
MediaRouteActionProvider The media route action provider displays a media route button in the application's ActionBar to allow the user to select routes and to control the currently selected route. 
MediaRouteButton  
MediaRouter This API is not recommended for new applications. 
MediaRouter.Callback Interface for receiving events about media routing changes. 
MediaRouter.RouteCategory Definition of a category of routes. 
MediaRouter.RouteGroup Information about a route that consists of multiple other routes in a group. 
MediaRouter.RouteInfo Information about a media route. 
MediaRouter.SimpleCallback Stub implementation of MediaRouter.Callback
MediaRouter.UserRouteInfo Information about a route that the application may define and modify. 
MediaRouter.VolumeCallback Interface for receiving events about volume changes. 
MediaRouter2 This API is not generally intended for third party application developers. 
MediaRouter2.ControllerCallback Callback for receiving RoutingController updates. 
MediaRouter2.OnGetControllerHintsListener A listener interface to send optional app-specific hints when creating a RoutingController
MediaRouter2.RouteCallback Callback for receiving events about media route discovery. 
MediaRouter2.RoutingController A class to control media routing session in media route provider. 
MediaRouter2.ScanRequest Represents a set of parameters for scanning requests. 
MediaRouter2.ScanRequest.Builder Builder class for ScanRequest
MediaRouter2.ScanToken Represents an active scan request registered in the system. 
MediaRouter2.TransferCallback Callback for receiving events on media transfer. 
MediaScannerConnection MediaScannerConnection provides a way for applications to pass a newly created or downloaded media file to the media scanner service. 
MediaScannerConnection.MediaScannerConnectionClient An interface for notifying clients of MediaScannerConnection when a connection to the MediaScanner service has been established and when the scanning of a file has completed. 
MediaScannerConnection.OnScanCompletedListener Interface for notifying clients of the result of scanning a requested media file. 
MediaSession Allows interaction with media controllers, volume keys, media buttons, and transport controls. 
MediaSession.Callback Receives media buttons, transport controls, and commands from controllers and the system. 
MediaSession.QueueItem A single item that is part of the play queue. 
MediaSession.Token Represents an ongoing session. 
MediaSession2 This API is not generally intended for third party application developers. 
MediaSession2.Builder This API is not generally intended for third party application developers. 
MediaSession2.ControllerInfo This API is not generally intended for third party application developers. 
MediaSession2.SessionCallback This API is not generally intended for third party application developers. 
MediaSession2Service This API is not generally intended for third party application developers. 
MediaSession2Service.MediaNotification This API is not generally intended for third party application developers. 
MediaSessionManager Provides support for interacting with media sessions that applications have published to express their ongoing media playback state. 
MediaSessionManager.OnActiveSessionsChangedListener Listens for changes to the list of active sessions. 
MediaSessionManager.OnMediaKeyEventSessionChangedListener Listener to receive changes in the media key event session, which would receive a media key event unless specified. 
MediaSessionManager.OnSession2TokensChangedListener This API is not generally intended for third party application developers. 
MediaSessionManager.RemoteUserInfo Information of a remote user of MediaSession or MediaBrowserService
MediaStore The contract between the media provider and applications. 
MediaStore.Audio Collection of all media with MIME type of audio/*
MediaStore.Audio.AlbumColumns Audio album metadata columns. 
MediaStore.Audio.Albums Contains artists for audio files 
MediaStore.Audio.ArtistColumns Audio artist metadata columns. 
MediaStore.Audio.Artists Contains artists for audio files 
MediaStore.Audio.Artists.Albums Sub-directory of each artist containing all albums on which a song by the artist appears. 
MediaStore.Audio.AudioColumns Audio metadata columns. 
MediaStore.Audio.Genres Contains all genres for audio files 
MediaStore.Audio.Genres.Members Sub-directory of each genre containing all members. 
MediaStore.Audio.GenresColumns Audio genre metadata columns. 
MediaStore.Audio.Media  
MediaStore.Audio.Playlists This class was deprecated in API level 31. Android playlists are now deprecated. We will keep the current functionality for compatibility resons, but we will no longer take feature request. We do not advise adding new usages of Android Playlists. M3U files can be used as an alternative. 
MediaStore.Audio.Playlists.Members Sub-directory of each playlist containing all members. 
MediaStore.Audio.PlaylistsColumns This interface was deprecated in API level 31. Android playlists are now deprecated. We will keep the current functionality for compatibility reasons, but we will no longer take feature request. We do not advise adding new usages of Android Playlists. M3U files can be used as an alternative. 
MediaStore.Audio.Radio  
MediaStore.DownloadColumns Download metadata columns. 
MediaStore.Downloads Collection of downloaded items. 
MediaStore.Files Media provider table containing an index of all files in the media storage, including non-media files. 
MediaStore.Files.FileColumns File metadata columns. 
MediaStore.Images Collection of all media with MIME type of image/*
MediaStore.Images.ImageColumns Image metadata columns. 
MediaStore.Images.Media  
MediaStore.Images.Thumbnails This class was deprecated in API level 29. Callers should migrate to using ContentResolver#loadThumbnail, since it offers richer control over requested thumbnail sizes and cancellation behavior. 
MediaStore.MediaColumns Common media metadata columns. 
MediaStore.PickerMediaColumns Photo picker metadata columns. 
MediaStore.Video Collection of all media with MIME type of video/*
MediaStore.Video.Media  
MediaStore.Video.Thumbnails This class was deprecated in API level 29. Callers should migrate to using ContentResolver#loadThumbnail, since it offers richer control over requested thumbnail sizes and cancellation behavior. 
MediaStore.Video.VideoColumns Video metadata columns. 
MediaSync MediaSync class can be used to synchronously play audio and video streams. 
MediaSync.Callback MediaSync callback interface. 
MediaSync.OnErrorListener Interface definition of a callback to be invoked when there has been an error during an asynchronous operation (other errors will throw exceptions at method call time). 
MediaSyncEvent The MediaSyncEvent class defines events that can be used to synchronize playback or capture actions between different players and recorders. 
MediaTimestamp An immutable object that represents the linear correlation between the media time and the system time. 
MediumTest This @interface was deprecated in API level 24. Use MediumTest instead. New tests should be written using the Android Testing Support Library. 
Member Member is an interface that reflects identifying information about a single member (a field or a method) or a constructor. 
MembershipKey A token representing the membership of an Internet Protocol (IP) multicast group. 
MemoryFile MemoryFile is a wrapper for SharedMemory which can optionally be set to purgeable. 
MemoryHandler Handler that buffers requests in a circular buffer in memory. 
MenstruationFlowRecord Captures a description of how heavy a user's menstrual flow was (spotting, light, medium, or heavy). 
MenstruationFlowRecord.Builder Builder class for MenstruationFlowRecord 
MenstruationFlowRecord.MenstruationFlowType Identifier for Menstruation Flow 
MenstruationPeriodRecord Captures the menstruation period record. 
MenstruationPeriodRecord.Builder Builder class for MenstruationPeriodRecord 
Menu Interface for managing the items in a menu. 
MenuInflater This class is used to instantiate menu XML files into Menu objects. 
MenuItem Interface for direct access to a previously created menu item. 
MenuItem.OnActionExpandListener Interface definition for a callback to be invoked when a menu item marked with MenuItem#SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW is expanded or collapsed. 
MenuItem.OnMenuItemClickListener Interface definition for a callback to be invoked when a menu item is clicked. 
MergeCursor A convenience class that lets you present an array of Cursors as a single linear Cursor. 
Mesh Class representing a mesh object. 
MeshSpecification Class responsible for holding specifications for Mesh creations. 
MeshSpecification.Attribute Data class to represent a single attribute in a shader. 
MeshSpecification.Varying Data class to represent a single varying variable. 
Message Defines a message containing a description and arbitrary data object that can be sent to a Handler
MessageDecryptionException Thrown when failing to decrypt a message from the reader device. 
MessageDigest This MessageDigest class provides applications the functionality of a message digest algorithm, such as SHA-1 or SHA-256. 
MessageDigestSpi This class defines the Service Provider Interface (SPI) for the MessageDigest class, which provides the functionality of a message digest algorithm, such as MD5 or SHA. 
MessageFormat [icu enhancement] ICU's replacement for MessageFormat. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
MessageFormat MessageFormat provides a means to produce concatenated messages in a language-neutral way. 
MessageFormat.Field Defines constants that are used as attribute keys in the AttributedCharacterIterator returned from MessageFormat.formatToCharacterIterator
MessageFormat.Field Defines constants that are used as attribute keys in the AttributedCharacterIterator returned from MessageFormat.formatToCharacterIterator
MessagePattern Parses and represents ICU MessageFormat patterns. 
MessagePattern.ApostropheMode Mode for when an apostrophe starts quoted literal text for MessageFormat output. 
MessagePattern.ArgType Argument type constants. 
MessagePattern.Part A message pattern "part", representing a pattern parsing event. 
MessagePattern.Part.Type Part type constants. 
MessagePdu A parcelable list of PDUs representing contents of a possibly multi-part SMS. 
MessageQueue Low-level class holding the list of messages to be dispatched by a Looper
MessageQueue.IdleHandler Callback interface for discovering when a thread is going to block waiting for more messages. 
MessageQueue.OnFileDescriptorEventListener A listener which is invoked when file descriptor related events occur. 
Messenger Reference to a Handler, which others can use to send messages to it. 
Metadata Set of shared metadata fields for Record 
Metadata.Builder  
MetaKeyKeyListener This base class encapsulates the behavior for tracking the state of meta keys such as SHIFT, ALT and SYM as well as the pseudo-meta state of selecting text. 
MeteringRectangle An immutable class to represent a rectangle (x, y, width, height) with an additional weight component. 
Method A Method provides information about, and access to, a single method on a class or interface. 
MethodHandle A method handle is a typed, directly executable reference to an underlying method, constructor, field, or similar low-level operation, with optional transformations of arguments or return values. 
MethodHandleInfo A symbolic reference obtained by cracking a direct method handle into its consitutent symbolic parts. 
MethodHandles This class consists exclusively of static methods that operate on or return method handles. 
MethodHandles.Lookup A lookup object is a factory for creating method handles, when the creation requires access checking. 
MethodType A method type represents the arguments and return type accepted and returned by a method handle, or the arguments and return type passed and expected by a method handle caller. 
MetricAffectingSpan The classes that affect character-level text formatting in a way that changes the width or height of characters extend this class. 
MGF1ParameterSpec This class specifies the set of parameters used with mask generation function MGF1 in OAEP Padding and RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard. 
MicrophoneDirection Interface defining mechanism for controlling the directionality and field width of audio capture. 
MicrophoneInfo Class providing information on a microphone. 
MicrophoneInfo.Coordinate3F  
MidiDevice This class is used for sending and receiving data to and from a MIDI device Instances of this class are created by MidiManager#openDevice
MidiDevice.MidiConnection This class represents a connection between the output port of one device and the input port of another. 
MidiDeviceInfo This class contains information to describe a MIDI device. 
MidiDeviceInfo.PortInfo Contains information about an input or output port. 
MidiDeviceService A service that implements a virtual MIDI device. 
MidiDeviceStatus This is an immutable class that describes the current status of a MIDI device's ports. 
MidiInputPort This class is used for sending data to a port on a MIDI device 
MidiManager This class is the public application interface to the MIDI service. 
MidiManager.DeviceCallback Callback class used for clients to receive MIDI device added and removed notifications 
MidiManager.OnDeviceOpenedListener Listener class used for receiving the results of MidiManager.openDevice(MidiDeviceInfo, OnDeviceOpenedListener, Handler) and MidiManager.openBluetoothDevice(BluetoothDevice, OnDeviceOpenedListener, Handler) 
MidiOutputPort This class is used for receiving data from a port on a MIDI device 
MidiReceiver Interface for sending and receiving data to and from a MIDI device. 
MidiSender Interface provided by a device to allow attaching MidiReceivers to a MIDI device. 
MidiUmpDeviceService A service that implements a virtual MIDI device for Universal MIDI Packets (UMP). 
MifareClassic Provides access to MIFARE Classic properties and I/O operations on a Tag
MifareUltralight Provides access to MIFARE Ultralight properties and I/O operations on a Tag
Migrator A migrator class to translate GenericDocument from different version of AppSearchSchema

Make non-backwards-compatible changes will delete all stored documents in old schema. 

MimeTypeMap Two-way map that maps MIME-types to file extensions and vice versa. 
MinguoChronology The Minguo calendar system. 
MinguoDate A date in the Minguo calendar system. 
MinguoEra An era in the Minguo calendar system. 
MissingForegroundServiceTypeException Exception thrown when an app tries to start a foreground Service without a type. 
MissingFormatArgumentException Unchecked exception thrown when there is a format specifier which does not have a corresponding argument or if an argument index refers to an argument that does not exist. 
MissingFormatWidthException Unchecked exception thrown when the format width is required. 
MissingResourceException Signals that a resource is missing. 
MloLink Data structure class representing a Wi-Fi Multi-Link Operation (MLO) link This is only used by 802.11be capable devices 
MmTelFeature Base implementation for Voice and SMS (IR-92) and Video (IR-94) IMS support. 
MmTelFeature.MmTelCapabilities Contains the capabilities defined and supported by a MmTelFeature in the form of a Bitmask. 
MockAccountManager This class is deprecated. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
MockApplication This class was deprecated in API level 24. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
MockContentProvider Mock implementation of ContentProvider. 
MockContentResolver

An extension of ContentResolver that is designed for testing. 

MockContext A mock Context class. 
MockCursor This class was deprecated in API level 24. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
MockDialogInterface This class was deprecated in API level 24. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
MockPackageManager This class was deprecated in API level 24. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
MockResources This class was deprecated in API level 24. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
MockService This class is deprecated. Use a mocking framework like Mockito. New tests should be written using the Android Testing Support Library. 
ModeAction Action sent by the user to indicate a change of mode. 
ModelDownloadListener Listener for model download events. 
ModelManager Handles model inference and only support TFLite model inference now. 
Modifier The Modifier class provides static methods and constants to decode class and member access modifiers. 
ModuleInfo Information you can retrieve about a particular system module. 
Month A month-of-year, such as 'July'. 
MonthDay A month-day in the ISO-8601 calendar system, such as --12-03
MonthDisplayHelper Helps answer common questions that come up when displaying a month in a 6 row calendar grid format. 
MoreAsserts This class was deprecated in API level 24. Use Hamcrest matchers instead. 
MotionEvent Object used to report movement (mouse, pen, finger, trackball) events. 
MotionEvent.PointerCoords Transfer object for pointer coordinates. 
MotionEvent.PointerProperties Transfer object for pointer properties. 
MotionPredictor Calculate motion predictions. 
MovementMethod Provides cursor positioning, scrolling and text selection functionality in a TextView
Movie This class was deprecated in API level 28. Prefer AnimatedImageDrawable. 
MtpConstants A class containing constants in the MTP and PTP specifications. 
MtpDevice This class represents an MTP or PTP device connected on the USB host bus. 
MtpDeviceInfo This class encapsulates information about an MTP device. 
MtpEvent This class encapsulates information about a MTP event. 
MtpObjectInfo This class encapsulates information about an object on an MTP device. 
MtpObjectInfo.Builder Builds a new object info instance. 
MtpStorageInfo This class encapsulates information about a storage unit on an MTP device. 
MultiAutoCompleteTextView An editable text view, extending AutoCompleteTextView, that can show completion suggestions for the substring of the text where the user is typing instead of necessarily for the entire thing. 
MultiAutoCompleteTextView.CommaTokenizer This simple Tokenizer can be used for lists where the items are separated by a comma and one or more spaces. 
MultiAutoCompleteTextView.Tokenizer  
MulticastChannel A network channel that supports Internet Protocol (IP) multicasting. 
MulticastSocket The multicast datagram socket class is useful for sending and receiving IP multicast packets. 
MultiResolutionImageReader

The MultiResolutionImageReader class wraps a group of ImageReaders with the same format and different sizes, source camera Id, or camera sensor modes. 

MultiResolutionStreamConfigurationMap Immutable class to store the information of the multi-resolution streams supported by the camera device. 
MultiResolutionStreamInfo A utility class describing the properties of one stream of fixed-size image buffers backing a multi-resolution image stream. 
MultiSelectListPreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
MultiTapKeyListener This is the standard key listener for alphabetic input on 12-key keyboards. 
MutableBoolean This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableByte This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableCallSite A MutableCallSite is a CallSite whose target variable behaves like an ordinary field. 
MutableChar This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableContextWrapper Special version of ContextWrapper that allows the base context to be modified after it is initially set. 
MutableDouble This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableFloat This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableInt This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableKeyValueStore An interface to a read-write key-value store. 
MutableLong This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 
MutableShort This class was deprecated in API level 28. This class will be removed from a future version of the Android API. 

N

NamedNodeMap Objects implementing the NamedNodeMap interface are used to represent collections of nodes that can be accessed by name. 
NamedParameterSpec This class is used to specify any algorithm parameters that are determined by a standard name. 
NameList The NameList interface provides the abstraction of an ordered collection of parallel pairs of name and namespace values (which could be null values), without defining or constraining how this collection is implemented. 
NamespaceContext

Interface for read only XML Namespace context processing. 

NamespaceSupport Encapsulate Namespace logic for use by applications using SAX, or internally by SAX drivers. 
Native Indicates that a field defining a constant value may be referenced from native code. 
NativeActivity Convenience for implementing an activity that will be implemented purely in native code. 
NavigableMap<K, V> A SortedMap extended with navigation methods returning the closest matches for given search targets. 
NavigableSet<E> A SortedSet extended with navigation methods reporting closest matches for given search targets. 
NClob The mapping in the JavaTM programming language for the SQL NCLOB type. 
Ndef Provides access to NDEF content and operations on a Tag
NdefFormatable Provide access to NDEF format operations on a Tag
NdefMessage Represents an immutable NDEF Message. 
NdefRecord Represents an immutable NDEF Record. 
NegativeArraySizeException Thrown if an application tries to create an array with negative size. 
NeighboringCellInfo This class was deprecated in API level 29. This class should not be used by any app targeting Android Q or higher. Instead callers should use CellInfo. 
NetPermission Legacy security code; do not use. 
Network Identifies a Network
NetworkCapabilities Representation of the capabilities of an active network. 
NetworkChannel A channel to a network socket. 
NetworkErrorException  
NetworkEvent An abstract class that represents a network event. 
NetworkEvent Media network event. 
NetworkEvent.Builder A builder for NetworkEvent 
NetworkException Exception passed to UrlRequest.Callback.onFailed() when the HTTP stack fails to process a network request. 
NetworkInfo This class was deprecated in API level 29. Callers should instead use the ConnectivityManager.NetworkCallback API to learn about connectivity changes, or switch to use ConnectivityManager#getNetworkCapabilities or ConnectivityManager#getLinkProperties to get information synchronously. Keep in mind that while callbacks are guaranteed to be called for every event in order, synchronous calls have no such constraints, and as such it is unadvisable to use the synchronous methods inside the callbacks as they will often not offer a view of networking that is consistent (that is: they may return a past or a future state with respect to the event being processed by the callback). Instead, callers are advised to only use the arguments of the callbacks, possibly memorizing the specific bits of information they need to keep from one callback to another. 
NetworkInfo.DetailedState This enum was deprecated in API level 29. See NetworkInfo. 
NetworkInfo.State This enum was deprecated in API level 29. See NetworkInfo. 
NetworkInterface This class represents a Network Interface made up of a name, and a list of IP addresses assigned to this interface. 
NetworkOnMainThreadException The exception that is thrown when an application attempts to perform a networking operation on its main thread. 
NetworkRegistrationInfo Description of a mobile network registration info 
NetworkRequest An object describing a network that the application is interested in. 
NetworkRequest.Builder Builder used to create NetworkRequest objects. 
NetworkScan The caller of TelephonyManager#requestNetworkScan(NetworkScanRequest, Executor, NetworkScanCallback) will receive an instance of NetworkScan, which contains a callback method stopScan() for stopping the in-progress scan. 
NetworkScanRequest Defines a request to perform a network scan. 
NetworkSecurityPolicy Network security policy. 
NetworkSliceInfo Represents a S-NSSAI as defined in 3GPP TS 24.501, which represents a network slice. 
NetworkSliceInfo.Builder Provides a convenient way to set the fields of a NetworkSliceInfo when creating a new instance. 
NetworkSlicingConfig Represents a slicing configuration 
NetworkSpecifier Describes specific properties of a requested network for use in a NetworkRequest
NetworkStats Class providing enumeration over buckets of network usage statistics. 
NetworkStats.Bucket Buckets are the smallest elements of a query result. 
NetworkStatsManager Provides access to network usage history and statistics. 
NetworkStatsManager.UsageCallback Base class for usage callbacks. 
NetworkViolation  
NfcA Provides access to NFC-A (ISO 14443-3A) properties and I/O operations on a Tag
NfcAdapter Represents the local NFC adapter. 
NfcAdapter.CreateBeamUrisCallback This interface was deprecated in API level 29. this feature is removed. File sharing can work using other technology like Bluetooth. 
NfcAdapter.CreateNdefMessageCallback This interface was deprecated in API level 29. this feature is removed. File sharing can work using other technology like Bluetooth. 
NfcAdapter.OnNdefPushCompleteCallback This interface was deprecated in API level 29. this feature is removed. File sharing can work using other technology like Bluetooth. 
NfcAdapter.OnTagRemovedListener A callback that is invoked when a tag is removed from the field. 
NfcAdapter.ReaderCallback A callback to be invoked when the system finds a tag while the foreground activity is operating in reader mode. 
NfcAntennaInfo Contains information on all available Nfc antennas on an Android device as well as information on the device itself in relation positioning of the antennas. 
NfcB Provides access to NFC-B (ISO 14443-3B) properties and I/O operations on a Tag
NfcBarcode Provides access to tags containing just a barcode. 
NfcEvent Wraps information associated with any NFC event. 
NfcF Provides access to NFC-F (JIS 6319-4) properties and I/O operations on a Tag
NfcFCardEmulation This class can be used to query the state of NFC-F card emulation services. 
NfcManager High level manager used to obtain an instance of an NfcAdapter
NfcV Provides access to NFC-V (ISO 15693) properties and I/O operations on a Tag
NinePatch The NinePatch class permits drawing a bitmap in nine or more sections. 
NinePatchDrawable A resizeable bitmap, with stretchable areas that you define. 
NoAuthenticationKeyAvailableException Thrown if no dynamic authentication keys are available. 
NoClassDefFoundError Thrown if the Java Virtual Machine or a ClassLoader instance tries to load in the definition of a class (as part of a normal method call or as part of creating a new instance using the new expression) and no definition of the class could be found. 
NoConnectionPendingException Unchecked exception thrown when the finishConnect method of a SocketChannel is invoked without first successfully invoking its connect method. 
NoCopySpan This interface should be added to a span object that should not be copied into a new Spanned when performing a slice or copy operation on the original Spanned it was placed in. 
NoCopySpan.Concrete Convenience equivalent for when you would just want a new Object() for a span but want it to be no-copy. 
Node The Node interface is the primary datatype for the entire Document Object Model. 
NodeChangeEvent An event emitted by a Preferences node to indicate that a child of that node has been added or removed. 
NodeChangeListener A listener for receiving preference node change events. 
NodeList The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. 
NoiseSuppressor Noise Suppressor (NS). 
NonReadableChannelException Unchecked exception thrown when an attempt is made to read from a channel that was not originally opened for reading. 
NonSdkApiUsedViolation Subclass of Violation that is used when a process accesses a non SDK API. 
NonWritableChannelException Unchecked exception thrown when an attempt is made to write to a channel that was not originally opened for writing. 
Normalizer Old Unicode normalization API. 
Normalizer This class provides the method normalize which transforms Unicode text into an equivalent composed or decomposed form, allowing for easier sorting and searching of text. 
Normalizer.Form This enum provides constants of the four Unicode normalization forms that are described in Unicode Standard Annex #15 — Unicode Normalization Forms and two methods to access them. 
Normalizer.QuickCheckResult Result values for quickCheck(). 
Normalizer2 Unicode normalization functionality for standard Unicode normalization or for using custom mapping tables. 
Normalizer2.Mode Constants for normalization modes. 
NoRouteToHostException Signals that an error occurred while attempting to connect a socket to a remote address and port. 
NoSuchAlgorithmException This exception is thrown when a particular cryptographic algorithm is requested but is not available in the environment. 
NoSuchElementException Thrown by various accessor methods to indicate that the element being requested does not exist. 
NoSuchFieldError Thrown if an application tries to access or modify a specified field of an object, and that object no longer has that field. 
NoSuchFieldException Signals that the class doesn't have a field of a specified name. 
NoSuchFileException Checked exception thrown when an attempt is made to access a file that does not exist. 
NoSuchMethodError Thrown if an application tries to call a specified method of a class (either static or instance), and that class no longer has a definition of that method. 
NoSuchMethodException Thrown when a particular method cannot be found. 
NoSuchPaddingException This exception is thrown when a particular padding mechanism is requested but is not available in the environment. 
NoSuchPropertyException Thrown when code requests a Property on a class that does not expose the appropriate method or field. 
NoSuchProviderException This exception is thrown when a particular security provider is requested but is not available in the environment. 
NotActiveException Thrown when serialization or deserialization is not active. 
Notation A class that defines the notation style to be used when formatting numbers in NumberFormatter. 
Notation This interface represents a notation declared in the DTD. 
NotDirectoryException Checked exception thrown when a file system operation, intended for a directory, fails because the file is not a directory. 
Notification A class that represents how a persistent notification is to be presented to the user using the NotificationManager
Notification.Action Structure to encapsulate a named action that can be shown as part of this notification. 
Notification.Action.Builder Builder class for Action objects. 
Notification.Action.Extender Extender interface for use with Builder#extend
Notification.Action.WearableExtender Wearable extender for notification actions. 
Notification.BigPictureStyle Helper class for generating large-format notifications that include a large image attachment. 
Notification.BigTextStyle Helper class for generating large-format notifications that include a lot of text. 
Notification.BubbleMetadata Encapsulates the information needed to display a notification as a bubble. 
Notification.BubbleMetadata.Builder Builder to construct a BubbleMetadata object. 
Notification.Builder Builder class for Notification objects. 
Notification.CallStyle Helper class for generating large-format notifications that include a large image attachment. 
Notification.CarExtender

Helper class to add Android Auto extensions to notifications. 

Notification.CarExtender.Builder Builder class for CarExtender.UnreadConversation objects. 
Notification.CarExtender.UnreadConversation A class which holds the unread messages from a conversation. 
Notification.DecoratedCustomViewStyle Notification style for custom views that are decorated by the system

Instead of providing a notification that is completely custom, a developer can set this style and still obtain system decorations like the notification header with the expand affordance and actions. 

Notification.DecoratedMediaCustomViewStyle Notification style for media custom views that are decorated by the system

Instead of providing a media notification that is completely custom, a developer can set this style and still obtain system decorations like the notification header with the expand affordance and actions. 

Notification.Extender Extender interface for use with Builder#extend
Notification.InboxStyle Helper class for generating large-format notifications that include a list of (up to 5) strings. 
Notification.MediaStyle Notification style for media playback notifications. 
Notification.MessagingStyle Helper class for generating large-format notifications that include multiple back-and-forth messages of varying types between any number of people. 
Notification.MessagingStyle.Message  
Notification.Style An object that can apply a rich notification style to a Notification.Builder object. 
Notification.TvExtender

Helper class to add Android TV extensions to notifications. 

Notification.WearableExtender Helper class to add wearable extensions to notifications. 
NotificationChannel A representation of settings that apply to a collection of similarly themed notifications. 
NotificationChannelGroup A grouping of related notification channels. 
NotificationListenerService A service that receives calls from the system when new notifications are posted or removed, or their ranking changed. 
NotificationListenerService.Ranking Stores ranking related information on a currently active notification. 
NotificationListenerService.RankingMap Provides access to ranking information on currently active notifications. 
NotificationManager Class to notify the user of events that happen. 
NotificationManager.Policy Notification policy configuration. 
NotLinkException Checked exception thrown when a file system operation fails because a file is not a symbolic link. 
NotOwnerException This class was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
NotProvisionedException Exception thrown when an operation on a MediaDrm object is attempted and the device does not have a certificate. 
NotSerializableException Thrown when an instance is required to have a Serializable interface. 
NotYetBoundException Unchecked exception thrown when an attempt is made to invoke an I/O operation upon a server socket channel that is not yet bound. 
NotYetConnectedException Unchecked exception thrown when an attempt is made to invoke an I/O operation upon a socket channel that is not yet connected. 
NsdManager The Network Service Discovery Manager class provides the API to discover services on a network. 
NsdManager.DiscoveryListener Interface for callback invocation for service discovery 
NsdManager.RegistrationListener Interface for callback invocation for service registration 
NsdManager.ResolveListener Callback for use with NsdManager#resolveService to resolve the service info and use with NsdManager#stopServiceResolution to stop resolution. 
NsdManager.ServiceInfoCallback Callback to listen to service info updates. 
NsdServiceInfo A class representing service information for network service discovery 
NullCipher The NullCipher class is a class that provides an "identity cipher" -- one that does not transform the plain text. 
NullPointerException Thrown when an application attempts to use null in a case where an object is required. 
Number The abstract class Number is the superclass of platform classes representing numeric values that are convertible to the primitive types byte, double, float, int, long, and short
NumberFormat [icu enhancement] ICU's replacement for NumberFormat. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
NumberFormat NumberFormat is the abstract base class for all number formats. 
NumberFormat.Field The instances of this inner class are used as attribute keys and values in AttributedCharacterIterator that NumberFormat.formatToCharacterIterator() method returns. 
NumberFormat.Field Defines constants that are used as attribute keys in the AttributedCharacterIterator returned from NumberFormat.formatToCharacterIterator and as field identifiers in FieldPosition
NumberFormatException Thrown to indicate that the application has attempted to convert a string to one of the numeric types, but that the string does not have the appropriate format. 
NumberFormatter All-in-one formatter for localized numbers, currencies, and units. 
NumberFormatter.DecimalSeparatorDisplay An enum declaring how to render the decimal separator. 
NumberFormatter.GroupingStrategy An enum declaring the strategy for when and how to display grouping separators (i.e., the separator, often a comma or period, after every 2-3 powers of ten). 
NumberFormatter.RoundingPriority An enum declaring how to resolve conflicts between maximum fraction digits and maximum significant digits. 
NumberFormatter.SignDisplay An enum declaring how to denote positive and negative numbers. 
NumberFormatter.TrailingZeroDisplay An enum declaring how to render trailing zeros. 
NumberFormatter.UnitWidth An enum declaring how to render units, including currencies. 
NumberFormatterSettings<T extends NumberFormatterSettings<?>> An abstract base class for specifying settings related to number formatting. 
NumberingSystem NumberingSystem is the base class for all number systems. 
NumberKeyListener For numeric text entry

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. 
NumberPicker A widget that enables the user to select a number from a predefined range. 
NumberPicker.Formatter Interface used to format current value into a string for presentation. 
NumberPicker.OnScrollListener Interface to listen for the picker scroll state. 
NumberPicker.OnValueChangeListener Interface to listen for changes of the current value. 
NumberRangeFormatter The main entrypoint to the formatting of ranges of numbers, including currencies and other units of measurement. 
NumberRangeFormatter.RangeCollapse Defines how to merge fields that are identical across the range sign. 
NumberRangeFormatter.RangeIdentityFallback Defines the behavior when the two numbers in the range are identical after rounding. 
NumberRangeFormatter.RangeIdentityResult Used in the result class FormattedNumberRange to indicate to the user whether the numbers formatted in the range were equal or not, and whether or not the identity fallback was applied. 
NumberRangeFormatterSettings<T extends NumberRangeFormatterSettings<?>> An abstract base class for specifying settings related to number formatting. 
NumericShaper The NumericShaper class is used to convert Latin-1 (European) digits to other Unicode decimal digits. 
NumericShaper.Range A NumericShaper.Range represents a Unicode range of a script having its own decimal digits. 
NutritionRecord Captures what nutrients were consumed as part of a meal or a food item. 
NutritionRecord.Builder Builder class for NutritionRecord 

O

OAEPParameterSpec This class specifies the set of parameters used with OAEP Padding, as defined in the PKCS #1 standard. 
ObbInfo Basic information about a Opaque Binary Blob (OBB) that reflects the info from the footer on the OBB file. 
ObbScanner Class to scan Opaque Binary Blob (OBB) files. 
ObjDoubleConsumer<T> Represents an operation that accepts an object-valued and a double-valued argument, and returns no result. 
Object Class Object is the root of the class hierarchy. 
ObjectAnimator This subclass of ValueAnimator provides support for animating properties on target objects. 
ObjectInput ObjectInput extends the DataInput interface to include the reading of objects. 
ObjectInputStream An ObjectInputStream deserializes primitive data and objects previously written using an ObjectOutputStream. 
ObjectInputStream.GetField Provide access to the persistent fields read from the input stream. 
ObjectInputValidation Callback interface to allow validation of objects within a graph. 
ObjectMethods Bootstrap methods for state-driven implementations of core methods, including Object#equals(Object), Object#hashCode(), and Object#toString()
ObjectOutput ObjectOutput extends the DataOutput interface to include writing of objects. 
ObjectOutputStream An ObjectOutputStream writes primitive data types and graphs of Java objects to an OutputStream. 
ObjectOutputStream.PutField Provide programmatic access to the persistent fields to be written to ObjectOutput. 
Objects This class consists of static utility methods for operating on objects, or checking certain conditions before operation. 
ObjectStreamClass Serialization's descriptor for classes. 
ObjectStreamConstants Constants written into the Object Serialization Stream. 
ObjectStreamException Superclass of all exceptions specific to Object Stream classes. 
ObjectStreamField A description of a Serializable field from a Serializable class. 
ObjIntConsumer<T> Represents an operation that accepts an object-valued and a int-valued argument, and returns no result. 
ObjLongConsumer<T> Represents an operation that accepts an object-valued and a long-valued argument, and returns no result. 
Observable<T> Provides methods for registering or unregistering arbitrary observers in an ArrayList
Observable This class was deprecated in API level 33. This class and the Observer interface have been deprecated. The event model supported by Observer and Observable is quite limited, the order of notifications delivered by Observable is unspecified, and state changes are not in one-for-one correspondence with notifications. For a richer event model, consider using the java.beans package. For reliable and ordered messaging among threads, consider using one of the concurrent data structures in the java.util.concurrent package. For reactive streams style programming, see the Flow API. 
Observer This interface was deprecated in API level 33. This interface has been deprecated. See the Observable class for further information. 
ObserverCallback An interface which apps can implement to subscribe to notifications of changes to AppSearch data. 
ObserverSpec Configures the types, namespaces and other properties that ObserverCallback instances match against. 
ObserverSpec.Builder Builder for ObserverSpec instances. 
OffHostApduService

OffHostApduService is a convenience Service class that can be extended to describe one or more NFC applications that are residing off-host, for example on an embedded secure element or a UICC. 

OffsetDateTime A date-time with an offset from UTC/Greenwich in the ISO-8601 calendar system, such as 2007-12-03T10:15:30+01:00
OffsetTime A time with an offset from UTC/Greenwich in the ISO-8601 calendar system, such as 10:15:30+01:00
OisSample Immutable class to store an optical image stabilization sample
OnAccountsUpdateListener An interface that contains the callback used by the AccountManager 
OnBackAnimationCallback Interface for applications to register back animation callbacks along their custom back handling. 
OnBackInvokedCallback Callback allowing applications to handle back events in place of the system. 
OnBackInvokedDispatcher Dispatcher to register OnBackInvokedCallback instances for handling back invocations. 
OnClickAction Class used to define an action to be performed when a child view in a presentation is clicked. 
OnDevicePersonalizationException Exception thrown by OnDevicePersonalization APIs. 
OnDevicePersonalizationManager OnDevicePersonalizationManager provides APIs for apps to load an IsolatedService in an isolated process and interact with it. 
OnDevicePersonalizationManager.ExecuteResult The result of a call to OnDevicePersonalizationManager#execute(ComponentName, PersistableBundle, Executor, OutcomeReceiver) 
OnNmeaMessageListener Used for receiving NMEA sentences from the GNSS. 
OnObbStateChangeListener Used for receiving notifications from StorageManager about OBB file states. 
OnReceiveContentListener Listener for apps to implement handling for insertion of content. 
OpcodeInfo Information about Dalvik opcodes. 
Opcodes A list of all normal (not implementation-specific) Dalvik opcodes. 
OpenableColumns These are standard columns for openable URIs. 
OpenOption An object that configures how to open or create a file. 
OperationApplicationException Thrown when an application of a ContentProviderOperation fails due the specified constraints. 
OperationCanceledException  
OperationCanceledException An exception type that is thrown when an operation in progress is canceled. 
Optional<T> A container object which may or may not contain a non-null value. 
OptionalDataException Exception indicating the failure of an object read operation due to unread primitive data, or the end of data belonging to a serialized object in the stream. 
OptionalDouble A container object which may or may not contain a double value. 
OptionalInt A container object which may or may not contain an int value. 
OptionalLong A container object which may or may not contain a long value. 
OrientationEventListener Helper class for receiving notifications from the SensorManager when the orientation of the device has changed. 
OrientationListener This class was deprecated in API level 3. use OrientationEventListener instead. This class internally uses the OrientationEventListener. 
OrientedBoundingBox An oriented bounding box 
Os Access to low-level system functionality. 
OsConstants Constants and helper functions for use with Os
OutcomeReceiver<R, E extends Throwable> Callback interface intended for use when an asynchronous operation may result in a failure. 
Outline Defines a simple shape, used for bounding graphical regions. 
OutOfMemoryError Thrown when the Java Virtual Machine cannot allocate an object because it is out of memory, and no more memory could be made available by the garbage collector. 
Output<T> Simple struct-like class for output parameters. 
OutputConfiguration A class for describing camera output, which contains a Surface and its specific configuration for creating capture session. 
OutputKeys Provides string constants that can be used to set output properties for a Transformer, or to retrieve output properties from a Transformer or Templates object. 
OutputStream This abstract class is the superclass of all classes representing an output stream of bytes. 
OutputStreamWriter An OutputStreamWriter is a bridge from character streams to byte streams: Characters written to it are encoded into bytes using a specified charset
OvalShape Defines an oval shape. 
OverlappingFileLockException Unchecked exception thrown when an attempt is made to acquire a lock on a region of a file that overlaps a region already locked by the same Java virtual machine, or when another thread is already waiting to lock an overlapping region of the same file. 
OverlayIdentifier A key used to uniquely identify a Runtime Resource Overlay (RRO). 
OverlayInfo An immutable information about an overlay. 
OverlayManager OverlayManager gives apps the ability to create an OverlayManagerTransaction to maintain the overlays and list the registered fabricated runtime resources overlays(FRROs). 
OverlayManagerTransaction A container for a batch of requests to the OverlayManager. 
OverlayProperties Provides supported overlay properties of the device. 
Override Indicates that a method declaration is intended to override a method declaration in a supertype. 
OverScroller This class encapsulates scrolling with the ability to overshoot the bounds of a scrolling operation. 
OvershootInterpolator An interpolator where the change flings forward and overshoots the last value then comes back. 
OvulationTestRecord Each record represents the result of an ovulation test. 
OvulationTestRecord.Builder Builder class for OvulationTestRecord 
OvulationTestRecord.OvulationTestResult Identifier for Ovulation Test Result 
Owner This interface was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
OxygenSaturationRecord Captures the amount of oxygen circulating in the blood, measured as a percentage of oxygen-saturated hemoglobin. 
OxygenSaturationRecord.Builder Builder class for OxygenSaturationRecord 

P

Pack200 Transforms a JAR file to or from a packed stream in Pack200 format. 
Pack200.Packer The packer engine applies various transformations to the input JAR file, making the pack stream highly compressible by a compressor such as gzip or zip. 
Pack200.Unpacker The unpacker engine converts the packed stream to a JAR file. 
Package Package objects contain version information about the implementation and specification of a Java package. 
PackageHealthStats Keys for HealthStats returned from HealthStats.getStats(int) with the UidHealthStats.STATS_PACKAGES key. 
PackageIdentifier This class represents a uniquely identifiable package. 
PackageInfo Overall information about the contents of a package. 
PackageInstaller Offers the ability to install, upgrade, and remove applications on the device. 
PackageInstaller.InstallConstraints A class to encapsulate constraints for installation. 
PackageInstaller.InstallConstraints.Builder Builder class for constructing InstallConstraints
PackageInstaller.InstallConstraintsResult The callback result of PackageInstaller.checkInstallConstraints(java.util.List, android.content.pm.PackageInstaller.InstallConstraints, java.util.concurrent.Executor, java.util.function.Consumer)
PackageInstaller.PreapprovalDetails Details for requesting the pre-commit install approval. 
PackageInstaller.PreapprovalDetails.Builder A builder for PreapprovalDetails 
PackageInstaller.Session An installation that is being actively staged. 
PackageInstaller.SessionCallback Events for observing session lifecycle. 
PackageInstaller.SessionInfo Details for an active install session. 
PackageInstaller.SessionParams Parameters for creating a new PackageInstaller.Session
PackageInstaller.UnarchivalState Used to communicate the unarchival state in PackageInstaller.reportUnarchivalState(UnarchivalState)
PackageItemInfo Base class containing information common to all package items held by the package manager. 
PackageItemInfo.DisplayNameComparator  
PackageManager Class for retrieving various kinds of information related to the application packages that are currently installed on the device. 
PackageManager.ApplicationInfoFlags Specific flags used for retrieving application info. 
PackageManager.ComponentEnabledSetting The class containing the enabled setting of a package component. 
PackageManager.ComponentInfoFlags Specific flags used for retrieving component info. 
PackageManager.NameNotFoundException This exception is thrown when a given package, application, or component name cannot be found. 
PackageManager.OnChecksumsReadyListener Listener that gets notified when checksums are available. 
PackageManager.PackageInfoFlags Specific flags used for retrieving package info. 
PackageManager.Property A property value set within the manifest. 
PackageManager.ResolveInfoFlags Specific flags used for retrieving resolve info. 
PackagePolicy A generic class that defines which APK packages are in scope for some device policy. 
PackageStats This class was deprecated in API level 26. this class is an orphan that could never be obtained from a valid public API. If you need package storage statistics use the new StorageStatsManager APIs. 
PageMatchBounds Represents the bounds of a single search match on a page of the PDF document. 
PageRange Represents a range of pages. 
PageSelection

Represents the list of selected content on a particular page of the PDF document. 

Paint The Paint class holds the style and color information about how to draw geometries, text and bitmaps. 
Paint.Align Align specifies how drawText aligns its text relative to the [x,y] coordinates. 
Paint.Cap The Cap specifies the treatment for the beginning and ending of stroked lines and paths. 
Paint.FontMetrics Class that describes the various metrics for a font at a given text size. 
Paint.FontMetricsInt Convenience method for callers that want to have FontMetrics values as integers. 
Paint.Join The Join specifies the treatment where lines and curve segments join on a stroked path. 
Paint.Style The Style specifies if the primitive being drawn is filled, stroked, or both (in the same color). 
PaintDrawable Drawable that draws its bounds in the given paint, with optional rounded corners. 
PaintFlagsDrawFilter  
Pair<F, S> Container to ease passing around a tuple of two objects. 
ParagraphStyle The classes that affect paragraph-level text formatting implement this interface. 
Parameter Information about method parameters. 
ParameterizedType ParameterizedType represents a parameterized type such as Collection<String>. 
ParameterMetaData An object that can be used to get information about the types and properties for each parameter marker in a PreparedStatement object. 
Parcel Container for a message (data and object references) that can be sent through an IBinder. 
Parcelable Interface for classes whose instances can be written to and restored from a Parcel
Parcelable.ClassLoaderCreator<T> Specialization of Creator that allows you to receive the ClassLoader the object is being created in. 
Parcelable.Creator<T> Interface that must be implemented and provided as a public CREATOR field that generates instances of your Parcelable class from a Parcel. 
ParcelableColorSpace A Parcelable wrapper for a ColorSpace
ParcelablePeerHandle A Parcelable PeerHandle
ParcelableSpan A special kind of Parcelable for objects that will serve as text spans. 
ParcelFileDescriptor The FileDescriptor returned by Parcel#readFileDescriptor, allowing you to close it when done with it. 
ParcelFileDescriptor.AutoCloseInputStream An InputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescriptor.close() for you when the stream is closed. 
ParcelFileDescriptor.AutoCloseOutputStream An OutputStream you can create on a ParcelFileDescriptor, which will take care of calling ParcelFileDescriptor.close() for you when the stream is closed. 
ParcelFileDescriptor.FileDescriptorDetachedException Exception that indicates that the file descriptor was detached. 
ParcelFileDescriptor.OnCloseListener Callback indicating that a ParcelFileDescriptor has been closed. 
ParcelFormatException The contents of a Parcel (usually during unmarshalling) does not contain the expected data. 
ParcelUuid This class is a Parcelable wrapper around UUID which is an immutable representation of a 128-bit universally unique identifier. 
ParseException Thrown when parsing failed. 
ParseException Signals that an error has been reached unexpectedly while parsing. 
ParsePosition ParsePosition is a simple class used by Format and its subclasses to keep track of the current position during parsing. 
Parser This interface was deprecated in API level 9. This interface has been replaced by the SAX2 XMLReader interface, which includes Namespace support. 
ParserAdapter Adapt a SAX1 Parser as a SAX2 XMLReader. 
ParserConfigurationException Indicates a serious configuration error. 
ParserFactory This class was deprecated in API level 9. This class works with the deprecated Parser interface. 
PasspointConfiguration Class representing Passpoint configuration. 
PasswordAuthentication The class PasswordAuthentication is a data holder that is used by Authenticator. 
PasswordCallback

Underlying security services instantiate and pass a PasswordCallback to the handle method of a CallbackHandler to retrieve password information. 

PasswordTransformationMethod  
Path The Path class encapsulates compound (multiple contour) geometric paths consisting of straight line segments, quadratic curves, and cubic curves. 
Path An object that may be used to locate a file in a file system. 
Path.Direction Specifies how closed shapes (e.g. rects, ovals) are oriented when they are added to a path. 
Path.FillType Enum for the ways a path may be filled. 
Path.Op The logical operations that can be performed when combining two paths. 
PathClassLoader Provides a simple ClassLoader implementation that operates on a list of files and directories in the local file system, but does not attempt to load classes from the network. 
PathDashPathEffect  
PathDashPathEffect.Style  
PathEffect PathEffect is the base class for objects in the Paint that affect the geometry of a drawing primitive before it is transformed by the canvas' matrix and drawn. 
PathInterpolator An interpolator that can traverse a Path that extends from Point (0, 0) to (1, 1)
PathIterator PathIterator can be used to query a given Path object, to discover its operations and point values. 
PathIterator.Segment This class holds the data for a given segment in a path, as returned by PathIterator.next()
PathMatcher An interface that is implemented by objects that perform match operations on paths. 
PathMeasure  
PathMotion This base class can be extended to provide motion along a Path to Transitions. 
PathPermission Description of permissions needed to access a particular path in a ProviderInfo
Paths This class consists exclusively of static methods that return a Path by converting a path string or URI
PathShape Creates geometric paths, utilizing the Path class. 
Pattern A compiled representation of a regular expression. 
PatternMatcher A simple pattern matcher, which is safe to use on untrusted data: it does not provide full reg-exp support, only simple globbing that can not be used maliciously. 
PatternPathMotion A PathMotion that takes a Path pattern and applies it to the separation between two points. 
Patterns Commonly used regular expression patterns. 
PatternSyntaxException Unchecked exception thrown to indicate a syntax error in a regular-expression pattern. 
PBEKey The interface to a PBE key. 
PBEKeySpec A user-chosen password that can be used with password-based encryption (PBE). 
PBEParameterSpec This class specifies the set of parameters used with password-based encryption (PBE), as defined in the PKCS #5 standard. 
PdfDocument

This class enables generating a PDF document from native Android content. 

PdfDocument.Page This class represents a PDF document page. 
PdfDocument.PageInfo This class represents meta-data that describes a PDF Page
PdfDocument.PageInfo.Builder Builder for creating a PageInfo
PdfPageGotoLinkContent Represents the content associated with a goto link on a page in the PDF document. 
PdfPageGotoLinkContent.Destination Represents the content associated with the destination where a goto link is directing 
PdfPageImageContent

Represents the content associated with an image type in a page of a PDF document. 

PdfPageLinkContent

Represents the bounds and link on a page of the PDF document. 

PdfPageTextContent

Represents a continuous stream of text in a page of a PDF document in the order of viewing. 

PdfRenderer

This class enables rendering a PDF document and selecting, searching, fast scrolling, annotations, etc. 

PdfRenderer.Page This class represents a PDF document page for rendering. 
PdfRendererPreV

This class enables rendering a PDF document and selecting, searching, fast scrolling, annotations, etc from Android R till Android U. 

PdfRendererPreV.Page This class represents a PDF document page for rendering. 
PeerHandle Opaque object used to represent a Wi-Fi Aware peer. 
PendingIntent A description of an Intent and target action to perform with it. 
PendingIntent.CanceledException Exception thrown when trying to send through a PendingIntent that has been canceled or is otherwise no longer able to execute the request. 
PendingIntent.OnFinished Callback interface for discovering when a send operation has completed. 
PeopleManager This class allows interaction with conversation and people data. 
PerBuyerDecisionLogic The override object for decision logic JS per buyer for SignedContextualAds
Percentage Represents a value as a percentage, not a fraction - for example 100%, 89.62%, etc. 
PerformanceHintManager The PerformanceHintManager allows apps to send performance hint to system. 
PerformanceHintManager.Session A Session represents a group of threads with an inter-related workload such that hints for their performance should be considered as a unit. 
PerformanceTestCase This interface was deprecated in API level 24. Use AndroidJUnitRunner instead. New tests should be written using the Android Testing Support Library. 
PerformanceTestCase.Intermediates Callbacks for PerformanceTestCase
Period A date-based amount of time in the ISO-8601 calendar system, such as '2 years, 3 months and 4 days'. 
PeriodicAdvertisingParameters The PeriodicAdvertisingParameters provide a way to adjust periodic advertising preferences for each Bluetooth LE advertising set. 
PeriodicAdvertisingParameters.Builder  
PeriodicSync Value type that contains information about a periodic sync. 
Permission Android doesn't support SecurityManager
Permission This interface was deprecated in API level 33. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.Policy and related classes since 1.2. 
PermissionCollection Android doesn't support SecurityManager
PermissionGroupInfo Information you can retrieve about a particular security permission group known to the system. 
PermissionInfo Information you can retrieve about a particular security permission known to the system. 
PermissionRequest This class defines a permission request and is used when web content requests access to protected resources. 
Permissions Android doesn't support SecurityManager
PersistableBundle A mapping from String keys to values of various types. 
PersistAdSelectionResultRequest Represents a request containing the seller, the ad selection data id and data. 
PersistAdSelectionResultRequest.Builder Builder for PersistAdSelectionResultRequest objects. 
PersistentDataBlockManager Interface to the persistent data partition. 
Person Provides an immutable reference to an entity that appears repeatedly on different surfaces of the platform. 
Person.Builder Builder for the immutable Person class. 
PersonalizationData An object that holds personalization data. 
PersonalizationData.Builder A builder for PersonalizationData
PesRequest A request for PES from broadcast signal. 
PesResponse A response for PES from broadcast signal. 
PhantomReference<T> Phantom reference objects, which are enqueued after the collector determines that their referents may otherwise be reclaimed. 
Phaser A reusable synchronization barrier, similar in functionality to CyclicBarrier and CountDownLatch but supporting more flexible usage. 
PhoneAccount Represents a distinct method to place or receive a phone call. 
PhoneAccount.Builder Helper class for creating a PhoneAccount
PhoneAccountHandle The unique identifier for a PhoneAccount
PhoneAccountSuggestion  
PhoneNumberFormattingTextWatcher This class was deprecated in API level 35. This is a thin wrapper on a `libphonenumber` `AsYouTypeFormatter`; it is recommended to use that instead. 
PhoneNumberUtils Various utilities for dealing with phone number strings. 
PhoneStateListener This class was deprecated in API level 31. Use TelephonyCallback instead. 
PhysicalChannelConfig  
Picture A Picture records drawing calls (via the canvas returned by beginRecording) and can then play them back into Canvas (via Picture#draw(Canvas) or Canvas#drawPicture(Picture)).For most content (e.g. 
PictureDrawable Drawable subclass that wraps a Picture, allowing the picture to be used wherever a Drawable is supported. 
PictureInPictureParams Represents a set of parameters used to initialize and update an Activity in picture-in-picture mode. 
PictureInPictureParams.Builder Builder class for PictureInPictureParams objects. 
PictureInPictureUiState Used by Activity#onPictureInPictureUiStateChanged(PictureInPictureUiState)
PidHealthStats Keys for HealthStats returned from HealthStats.getStats(int) with the UidHealthStats.STATS_PIDS key. 
Pipe A pair of channels that implements a unidirectional pipe. 
Pipe.SinkChannel A channel representing the writable end of a Pipe
Pipe.SourceChannel A channel representing the readable end of a Pipe
PipedInputStream A piped input stream should be connected to a piped output stream; the piped input stream then provides whatever data bytes are written to the piped output stream. 
PipedOutputStream A piped output stream can be connected to a piped input stream to create a communications pipe. 
PipedReader Piped character-input streams. 
PipedWriter Piped character-output streams. 
PixelCopy Provides a mechanisms to issue pixel copy requests to allow for copy operations from Surface to Bitmap 
PixelCopy.OnPixelCopyFinishedListener Listener for observing the completion of a PixelCopy request. 
PixelCopy.Request Represents a PixelCopy request. 
PixelCopy.Request.Builder A builder to create the complete PixelCopy request, which is then executed by calling PixelCopy.request(android.view.PixelCopy.Request, java.util.concurrent.Executor, java.util.function.Consumer) with the built request returned from build() 
PixelCopy.Result Contains the result of a PixelCopy request 
PixelFormat  
PKCS12Attribute An attribute associated with a PKCS12 keystore entry. 
PKCS8EncodedKeySpec This class represents the ASN.1 encoding of a private key, encoded according to the ASN.1 type PrivateKeyInfo
PKIXBuilderParameters Parameters used as input for the PKIX CertPathBuilder algorithm. 
PKIXCertPathBuilderResult This class represents the successful result of the PKIX certification path builder algorithm. 
PKIXCertPathChecker An abstract class that performs one or more checks on an X509Certificate
PKIXCertPathValidatorResult This class represents the successful result of the PKIX certification path validation algorithm. 
PKIXParameters Parameters used as input for the PKIX CertPathValidator algorithm. 
PKIXReason The PKIXReason enumerates the potential PKIX-specific reasons that an X.509 certification path may be invalid according to the PKIX (RFC 5280) standard. 
PKIXRevocationChecker A PKIXCertPathChecker for checking the revocation status of certificates with the PKIX algorithm. 
PKIXRevocationChecker.Option Various revocation options that can be specified for the revocation checking mechanism. 
PlannedExerciseBlock Represents a series of PlannedExerciseStep
PlannedExerciseBlock.Builder Builder of PlannedExerciseBlock
PlannedExerciseSessionRecord Captures a planned exercise session, also commonly referred to as a training plan. 
PlannedExerciseSessionRecord.Builder Builder class for PlannedExerciseSessionRecord
PlannedExerciseStep A single step within an PlannedExerciseBlock e.g. 8x 60kg barbell squats. 
PlannedExerciseStep.Builder Builder of PlannedExerciseStep
PlatformVpnProfile PlatformVpnProfile represents a configuration for a platform-based VPN implementation. 
PlaybackErrorEvent Playback error event. 
PlaybackErrorEvent.Builder A builder for PlaybackErrorEvent 
PlaybackMetrics This class is used to store playback data. 
PlaybackMetrics.Builder A builder for PlaybackMetrics 
PlaybackParams Structure for common playback params. 
PlaybackSession An instance of this class represents a session of media playback used to report playback metrics and events. 
PlaybackState Playback state for a MediaSession
PlaybackState.Builder Builder for PlaybackState objects. 
PlaybackState.CustomAction CustomActions can be used to extend the capabilities of the standard transport controls by exposing app specific actions to MediaControllers
PlaybackState.CustomAction.Builder Builder for CustomAction objects. 
PlaybackStateEvent Playback state event. 
PlaybackStateEvent.Builder A builder for PlaybackStateEvent 
PluginStub This interface is used to implement plugins in a WebView. 
PluralFormat PluralFormat supports the creation of internationalized messages with plural inflection. 
PluralRules

Defines rules for mapping non-negative numeric values onto a small set of keywords. 

PluralRules.PluralType Type of plurals and PluralRules. 
Point Point holds two integer coordinates 
PointerIcon Represents an icon that can be used as a mouse pointer. 
PointF PointF holds two float coordinates 
PointFEvaluator This evaluator can be used to perform type interpolation between PointF values. 
Policy Android doesn't support SecurityManager
Policy.Parameters  
PolicyNode An immutable valid policy tree node as defined by the PKIX certification path validation algorithm. 
PolicyQualifierInfo An immutable policy qualifier represented by the ASN.1 PolicyQualifierInfo structure. 
PolicySpi This class defines the Service Provider Interface (SPI) for the Policy class. 
PolicyUpdateReceiver Base class for implementing a policy update receiver. 
PolicyUpdateResult Class containing the reason for the policy (set from DevicePolicyManager) update (e.g. 
PollingFrame Polling Frames represent data about individual frames of an NFC polling loop. 
PooledConnection An object that provides hooks for connection pool management. 
PopupMenu A PopupMenu displays a Menu in a modal popup window anchored to a View
PopupMenu.OnDismissListener Callback interface used to notify the application that the menu has closed. 
PopupMenu.OnMenuItemClickListener Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners. 
PopupWindow

This class represents a popup window that can be used to display an arbitrary view. 

PopupWindow.OnDismissListener Listener that is called when this popup window is dismissed. 
PorterDuff

This class contains the list of alpha compositing and blending modes that can be passed to PorterDuffXfermode, a specialized implementation of Paint's transfer mode

PorterDuff.Mode

The name of the parent class is an homage to the work of Thomas Porter and Tom Duff, presented in their seminal 1984 paper titled "Compositing Digital Images". 

PorterDuffColorFilter A color filter that can be used to tint the source pixels using a single color and a specific Porter-Duff composite mode
PorterDuffXfermode

Specialized implementation of Paint's transfer mode

PortUnreachableException Signals that an ICMP Port Unreachable message has been received on a connected datagram. 
PositionedGlyphs Text shaping result object for single style text. 
PosixFileAttributes File attributes associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards. 
PosixFileAttributeView A file attribute view that provides a view of the file attributes commonly associated with files on file systems used by operating systems that implement the Portable Operating System Interface (POSIX) family of standards. 
PosixFilePermission Defines the bits for use with the permissions attribute. 
PosixFilePermissions This class consists exclusively of static methods that operate on sets of PosixFilePermission objects. 
PostProcessor Helper interface for adding custom processing to an image. 
Power Represents a unit of power. 
PowerManager This class lets you query and request control of aspects of the device's power state. 
PowerManager.OnThermalStatusChangedListener Listener passed to PowerManager#addThermalStatusListener and PowerManager#removeThermalStatusListener to notify caller of thermal status has changed. 
PowerManager.WakeLock A wake lock is a mechanism to indicate that your application needs to have the device stay on. 
PowerManager.WakeLockStateListener A listener interface to get notified when the wakelock is enabled/disabled. 
PowerMonitor A PowerMonitor represents either an ODPM rail (on-device power rail monitor) or a modeled energy consumer. 
PowerMonitorReadings A collection of energy measurements from Power Monitors. 
PowerRecord Captures the power generated by the user, e.g. during cycling or rowing with a power meter. 
PowerRecord.Builder Builder class for PowerRecord 
PowerRecord.PowerRecordSample Represents a single measurement of power. 
PpsMoParser Utility class for converting OMA-DM (Open Mobile Alliance's Device Management) PPS-MO (PerProviderSubscription Management Object) XML tree to a PasspointConfiguration object. 
PreciseDataConnectionState Contains precise data connection state. 
Precision A class that defines the rounding precision to be used when formatting numbers in NumberFormatter. 
PrecomputedText A text which has the character metrics data. 
PrecomputedText.Params The information required for building PrecomputedText
PrecomputedText.Params.Builder A builder for creating Params
Predicate<T> Represents a predicate (boolean-valued function) of one argument. 
Prediction  
Preference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Preference.BaseSavedState This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Preference.OnPreferenceChangeListener This interface was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Preference.OnPreferenceClickListener This interface was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceActivity This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceActivity.Header This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceCategory This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceChangeEvent An event emitted by a Preferences node to indicate that a preference has been added, removed or has had its value changed. 
PreferenceChangeListener A listener for receiving preference change events. 
PreferenceDataStore This interface was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceFragment This class was deprecated in API level 28. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceFragment.OnPreferenceStartFragmentCallback This interface was deprecated in API level 28. Use PreferenceFragmentCompat.OnPreferenceStartFragmentCallback 
PreferenceGroup This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceManager This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceManager.OnActivityDestroyListener This interface was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceManager.OnActivityResultListener This interface was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferenceManager.OnActivityStopListener This interface was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Preferences A node in a hierarchical collection of preference data. 
PreferenceScreen This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
PreferencesFactory A factory object that generates Preferences objects. 
PreferentialNetworkServiceConfig Network configuration to be set for the user profile . 
PreferentialNetworkServiceConfig.Builder Builder used to create PreferentialNetworkServiceConfig objects. 
PreparedStatement An object that represents a precompiled SQL statement. 
PrepareGetCredentialResponse A response object that prefetches user app credentials and provides metadata about them. 
PrepareGetCredentialResponse.PendingGetCredentialHandle A handle that represents a pending get-credential operation. 
Presentation Base class for presentations. 
Presentations Holds presentations used to visualize autofill suggestions for each available UI type. 
Presentations.Builder A builder for Presentations 
PresentationSession Class for presenting multiple documents to a remote verifier. 
PresetReverb A sound generated within a room travels in many directions. 
PresetReverb.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the PresetReverb when a parameter value has changed. 
PresetReverb.Settings The Settings class regroups all preset reverb parameters. 
Pressure Represents a unit of pressure. 
PreviewableHandwritingGesture A HandwritingGesture that can be previewed
PrimitiveIterator<T, T_CONS> A base type for primitive specializations of Iterator
PrimitiveIterator.OfDouble An Iterator specialized for double values. 
PrimitiveIterator.OfInt An Iterator specialized for int values. 
PrimitiveIterator.OfLong An Iterator specialized for long values. 
Principal This interface represents the abstract notion of a principal, which can be used to represent any entity, such as an individual, a corporation, and a login id. 
PrintAttributes This class represents the attributes of a print job. 
PrintAttributes.Builder Builder for creating PrintAttributes
PrintAttributes.Margins This class specifies content margins. 
PrintAttributes.MediaSize This class specifies a supported media size. 
PrintAttributes.Resolution This class specifies a supported resolution in DPI (dots per inch). 
PrintDocument This class represents a printed document from the perspective of a print service. 
PrintDocumentAdapter Base class that provides the content of a document to be printed. 
PrintDocumentAdapter.LayoutResultCallback Base class for implementing a callback for the result of PrintDocumentAdapter.onLayout(android.print.PrintAttributes, android.print.PrintAttributes, android.os.CancellationSignal, android.print.PrintDocumentAdapter.LayoutResultCallback, android.os.Bundle)
PrintDocumentAdapter.WriteResultCallback Base class for implementing a callback for the result of PrintDocumentAdapter.onWrite(android.print.PageRange[], android.os.ParcelFileDescriptor, android.os.CancellationSignal, android.print.PrintDocumentAdapter.WriteResultCallback)
PrintDocumentInfo This class encapsulates information about a document for printing purposes. 
PrintDocumentInfo.Builder Builder for creating a PrintDocumentInfo
PrintedPdfDocument This class is a helper for creating a PDF file for given print attributes. 
Printer Simple interface for printing text, allowing redirection to various targets. 
PrinterCapabilitiesInfo This class represents the capabilities of a printer. 
PrinterCapabilitiesInfo.Builder Builder for creating of a PrinterCapabilitiesInfo
PrinterDiscoverySession This class encapsulates the interaction between a print service and the system during printer discovery. 
PrinterId This class represents the unique id of a printer. 
PrinterInfo This class represents the description of a printer. 
PrinterInfo.Builder Builder for creating of a PrinterInfo
PrintJob This class represents a print job from the perspective of an application. 
PrintJob This class represents a print job from the perspective of a print service. 
PrintJobId This class represents the id of a print job. 
PrintJobInfo This class represents the description of a print job. 
PrintJobInfo.Builder Builder for creating a PrintJobInfo
PrintManager System level service for accessing the printing capabilities of the platform. 
PrintService

This is the base class for implementing print services. 

PrintStream A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently. 
PrintStreamPrinter Implementation of a Printer that sends its output to a PrintStream
PrintWriter Prints formatted representations of objects to a text-output stream. 
PrintWriterPrinter Implementation of a Printer that sends its output to a PrintWriter
PriorityBlockingQueue<E> An unbounded blocking queue that uses the same ordering rules as class PriorityQueue and supplies blocking retrieval operations. 
PriorityQueue<E> An unbounded priority queue based on a priority heap. 
PrivateCredentialPermission Legacy security code; do not use. 
PrivateKey A private key. 
PrivilegedAction<T> Android doesn't support SecurityManager
PrivilegedActionException Legacy security code; do not use. 
PrivilegedExceptionAction<T> Android doesn't support SecurityManager
Process Tools for managing OS processes. 
Process The ProcessBuilder#start() and Runtime.exec methods create a native process and return an instance of a subclass of Process that can be used to control the process and obtain information about it. 
ProcessBuilder This class is used to create operating system processes. 
ProcessBuilder.Redirect Represents a source of subprocess input or a destination of subprocess output. 
ProcessBuilder.Redirect.Type The type of a Redirect
ProcessedData This class was deprecated in API level 30. Please use MediaDrm 
ProcessHealthStats Keys for HealthStats returned from HealthStats.getStats(int) with the UidHealthStats.STATS_PROCESSES key. 
ProcessingInstruction The ProcessingInstruction interface represents a "processing instruction", used in XML as a way to keep processor-specific information in the text of the document. 
ProfilingManager API for apps to request and listen for app specific profiling. 
ProfilingResult Encapsulates results of a single profiling request operation. 
ProgressBar

A user interface element that indicates the progress of an operation. 

ProgressDialog This class was deprecated in API level 26. ProgressDialog is a modal dialog, which prevents the user from interacting with the app. Instead of using this class, you should use a progress indicator like ProgressBar, which can be embedded in your app's UI. Alternatively, you can use a notification to inform the user of the task's progress. 
PromptContentItem An item shown on PromptContentView
PromptContentItemBulletedText A list item with bulleted text shown on PromptVerticalListContentView
PromptContentItemPlainText A list item with plain text shown on PromptVerticalListContentView
PromptContentView Contains the information of the template of content view for Biometric Prompt. 
PromptContentViewWithMoreOptionsButton Contains the information of the template of content view with a more options button for Biometric Prompt. 
PromptContentViewWithMoreOptionsButton.Builder A builder that collects arguments to be shown on the content view with more options button. 
PromptVerticalListContentView Contains the information of the template of vertical list content view for Biometric Prompt. 
PromptVerticalListContentView.Builder A builder that collects arguments to be shown on the vertical list view. 
Properties The Properties class represents a persistent set of properties. 
Property<T, V> A property is an abstraction that can be used to represent a mutable value that is held in a host object. 
PropertyChangeEvent A "PropertyChange" event gets delivered whenever a bean changes a "bound" or "constrained" property. 
PropertyChangeListener A "PropertyChange" event gets fired whenever a bean changes a "bound" property. 
PropertyChangeListenerProxy A class which extends the EventListenerProxy specifically for adding a PropertyChangeListener with a "bound" property. 
PropertyChangeSupport This is a utility class that can be used by beans that support bound properties. 
PropertyMapper An interface for mapping the string names of inspectable properties to integer identifiers. 
PropertyMapper.PropertyConflictException Thrown from a map method if a property name is already mapped as different type. 
PropertyPath Represents a property path returned from searching the AppSearch Database. 
PropertyPath.PathSegment A segment of a PropertyPath, which includes the name of the property and a 0-based index into this property. 
PropertyPermission Legacy security code; do not use. 
PropertyReader An interface for reading the properties of an inspectable object. 
PropertyReader.PropertyTypeMismatchException Thrown if a client calls a typed read method for a property of a different type. 
PropertyResourceBundle PropertyResourceBundle is a concrete subclass of ResourceBundle that manages resources for a locale using a set of static strings from a property file. 
PropertyValuesHolder This class holds information about a property and the values that that property should take on during an animation. 
ProtectedSignalsManager ProtectedSignalsManager provides APIs for apps and ad-SDKs to manage their protected signals. 
ProtectionDomain Legacy security code; do not use. 
ProtocolException Thrown to indicate that there is an error in the underlying protocol, such as a TCP error. 
ProtocolFamily Represents a family of communication protocols. 
ProtoOutputStream Class to write to a protobuf stream. 
Provider This class represents a "provider" for the Java Security API, where a provider implements some or all parts of Java Security. 
Provider.Service The description of a security service. 
ProviderException A runtime exception for Provider exceptions (such as misconfiguration errors or unrecoverable internal errors), which may be subclassed by Providers to throw specialized, provider-specific runtime errors. 
ProviderInfo Holds information about a specific content provider
ProviderMismatchException Unchecked exception thrown when an attempt is made to invoke a method on an object created by one file system provider with a parameter created by a different file system provider. 
ProviderNotFoundException Runtime exception thrown when a provider of the required type cannot be found. 
ProviderProperties Location provider properties. 
ProviderProperties.Builder Builder for ProviderProperties. 
ProviderTestCase<T extends ContentProvider> This class was deprecated in API level 5. this class extends InstrumentationTestCase but should extend AndroidTestCase. Use ProviderTestCase2, which corrects this problem, instead. 
ProviderTestCase2<T extends ContentProvider> This test case class provides a framework for testing a single ContentProvider and for testing your app code with an isolated content provider. 
ProvisioningManager Manages IMS provisioning and configuration parameters, as well as callbacks for apps to listen to changes in these configurations. 
ProvisioningManager.FeatureProvisioningCallback Callback for IMS provisioning feature changes. 
Proxy A convenience class for accessing the user and default proxy settings. 
Proxy Proxy provides static methods for creating dynamic proxy classes and instances, and it is also the superclass of all dynamic proxy classes created by those methods. 
Proxy This class represents a proxy setting, typically a type (http, socks) and a socket address. 
Proxy.Type Represents the proxy type. 
ProxyFileDescriptorCallback Callback that handles file system requests from ProxyFileDescriptor. 
ProxyInfo Describes a proxy configuration. 
ProxySelector Selects the proxy server to use, if any, when connecting to the network resource referenced by a URL. 
PSource This class specifies the source for encoding input P in OAEP Padding, as defined in the PKCS #1 standard. 
PSource.PSpecified This class is used to explicitly specify the value for encoding input P in OAEP Padding. 
PSSParameterSpec This class specifies a parameter spec for RSASSA-PSS signature scheme, as defined in the PKCS#1 v2.2 standard. 
PublicKey

A public key. 

PublishConfig Defines the configuration of an Aware publish session. 
PublishConfig.Builder Builder used to build PublishConfig objects. 
PublishDiscoverySession A class representing a Aware publish session. 
PushbackInputStream A PushbackInputStream adds functionality to another input stream, namely the ability to "push back" or "unread" bytes, by storing pushed-back bytes in an internal buffer. 
PushbackReader A character-stream reader that allows characters to be pushed back into the stream. 
PutDocumentsRequest Encapsulates a request to index documents into an AppSearchSession database. 
PutDocumentsRequest.Builder Builder for PutDocumentsRequest objects. 

Q

QName

QName represents a qualified name as defined in the XML specifications: XML Schema Part2: Datatypes specification, Namespaces in XML, Namespaces in XML Errata

QueryLocationException This class represents a set of exceptions that can occur when requesting a Connection#queryLocationForEmergency(long, String, Executor, OutcomeReceiver) 
Queue<E> A collection designed for holding elements prior to processing. 
QuicException Subclass of NetworkException which contains a detailed QUIC error code from QuicErrorCode
QuickAccessWalletService A QuickAccessWalletService provides a list of WalletCards shown in the Quick Access Wallet. 
QuickContactBadge Widget used to show an image with the standard QuickContact badge and on-click behavior. 
QuickViewConstants Constants for Intent#ACTION_QUICK_VIEW
QuicOptions Configuration options for QUIC. 
QuicOptions.Builder Builder for QuicOptions
QuoteSpan A span which styles paragraphs by adding a vertical stripe at the beginning of the text (respecting layout direction). 
QwertyKeyListener This is the standard key listener for alphabetic input on qwerty keyboards. 

R

R  
R.anim  
R.animator  
R.array  
R.attr  
R.bool  
R.color  
R.dimen  
R.drawable  
R.fraction  
R.id  
R.integer  
R.interpolator  
R.layout  
R.menu  
R.mipmap  
R.plurals  
R.raw  
R.string  
R.style  
R.styleable  
R.transition  
R.xml  
RadialGradient  
RadioAccessSpecifier Describes a particular radio access network to be scanned. 
RadioButton

A radio button is a two-states button that can be either checked or unchecked. 

RadioGroup

This class is used to create a multiple-exclusion scope for a set of radio buttons. 

RadioGroup.LayoutParams

This set of layout parameters defaults the width and the height of the children to ViewGroup.LayoutParams.WRAP_CONTENT when they are not specified in the XML file. 

RadioGroup.OnCheckedChangeListener

Interface definition for a callback to be invoked when the checked radio button changed in this group. 

Random An instance of this class is used to generate a stream of pseudorandom numbers; its period is only 248
RandomAccess Marker interface used by List implementations to indicate that they support fast (generally constant time) random access. 
RandomAccessFile Instances of this class support both reading and writing to a random access file. 
RandomGenerator The RandomGenerator interface is designed to provide a common protocol for objects that generate random or (more typically) pseudorandom sequences of numbers (or Boolean values). 
RandomGenerator.ArbitrarilyJumpableGenerator This interface is designed to provide a common protocol for objects that generate sequences of pseudorandom values and can easily jump forward, by an arbitrary amount, to a distant point in the state cycle. 
RandomGenerator.JumpableGenerator This interface is designed to provide a common protocol for objects that generate pseudorandom values and can easily jump forward, by a moderate amount (ex. 
RandomGenerator.LeapableGenerator This interface is designed to provide a common protocol for objects that generate sequences of pseudorandom values and can easily not only jump but also leap forward, by a large amount (ex. 
RandomGenerator.SplittableGenerator This interface is designed to provide a common protocol for objects that generate sequences of pseudorandom values and can be split into two objects (the original one and a new one) each of which obey that same protocol (and therefore can be recursively split indefinitely). 
RandomGenerator.StreamableGenerator The StreamableGenerator interface augments the RandomGenerator interface to provide methods that return streams of RandomGenerator objects. 
RandomGeneratorFactory<T extends RandomGenerator> This is a factory class for generating multiple random number generators of a specific algorithm
Range<T extends Comparable<? super T>> Immutable class for describing the range of two numeric values. 
RangeTemplate A template for a Control with inputs in a "continuous" range of values. 
RangeValueIterator

Interface for enabling iteration over sets of <int index, int value>, where index is the sorted integer index in ascending order and value, its associated integer value. 

RangeValueIterator.Element Return result wrapper for android.icu.util.RangeValueIterator. 
RangingRequest Defines the ranging request to other devices. 
RangingRequest.Builder Builder class used to construct RangingRequest objects. 
RangingResult Ranging result for a request started by WifiRttManager#startRanging(RangingRequest, java.util.concurrent.Executor, RangingResultCallback)
RangingResult.Builder Builder class used to construct RangingResult objects. 
RangingResultCallback Base class for ranging result callbacks. 
Rating A class to encapsulate rating information used as content metadata. 
RatingBar A RatingBar is an extension of SeekBar and ProgressBar that shows a rating in stars. 
RatingBar.OnRatingBarChangeListener A callback that notifies clients when the rating has been changed. 
Rational

An immutable data type representation a rational number. 

RC2ParameterSpec This class specifies the parameters used with the RC2 algorithm. 
RC5ParameterSpec This class specifies the parameters used with the RC5 algorithm. 
RcsUceAdapter Manages RCS User Capability Exchange for the subscription specified. 
Readable A Readable is a source of characters. 
ReadableByteChannel A channel that can read bytes. 
Reader Instances of this class represent Secure Element Readers supported to this device. 
Reader Abstract class for reading character streams. 
ReadOnlyBufferException Unchecked exception thrown when a content-mutation method such as put or compact is invoked upon a read-only buffer. 
ReadOnlyFileSystemException Unchecked exception thrown when an attempt is made to update an object associated with a read-only FileSystem
ReadPendingException Unchecked exception thrown when an attempt is made to read from an asynchronous socket channel and a previous read has not completed. 
ReadRecordsRequest<T extends Record> A Base class to represent a request for HealthConnectManager.readRecords(android.health.connect.ReadRecordsRequest, java.util.concurrent.Executor, android.os.OutcomeReceiver) 
ReadRecordsRequestUsingFilters<T extends Record> Class to represent a request based on time range and data origin filters for HealthConnectManager.readRecords(android.health.connect.ReadRecordsRequest, java.util.concurrent.Executor, android.os.OutcomeReceiver) 
ReadRecordsRequestUsingFilters.Builder<T extends Record> Builder class for ReadRecordsRequestUsingFilters 
ReadRecordsRequestUsingIds<T extends Record> A request class to represent request based on RecordIdFilters for HealthConnectManager.readRecords(android.health.connect.ReadRecordsRequest, java.util.concurrent.Executor, android.os.OutcomeReceiver)

A RecordIdFilter can be constructed with either record ID or client record ID

ReadRecordsRequestUsingIds.Builder<T extends Record> Builder class for ReadRecordsRequestUsingIds 
ReadRecordsResponse<T extends Record> Response containing list of Records for HealthConnectManager#readRecords
ReadWriteLock A ReadWriteLock maintains a pair of associated locks, one for read-only operations and one for writing. 
ReceiverCallNotAllowedException This exception is thrown from Context#registerReceiver and Context#bindService when these methods are being used from an BroadcastReceiver component. 
RecognitionListener Used for receiving notifications from the SpeechRecognizer when the recognition related events occur. 
RecognitionPart Info about a single recognition part. 
RecognitionPart.Builder A builder for RecognitionPart 
RecognitionService This class provides a base class for recognition service implementations. 
RecognitionService.Callback This class receives callbacks from the speech recognition service and forwards them to the user. 
RecognitionService.SupportCallback This class receives callbacks from the speech recognition service and forwards them to the user. 
RecognitionSupport Encodes the level of support for a given speech recognition request 
RecognitionSupport.Builder A builder for RecognitionSupport 
RecognitionSupportCallback Used for receiving notifications from the SpeechRecognizer about the device support status for the given recognition request. 
RecognizerIntent Constants for supporting speech recognition through starting an Intent 
RecognizerResultsIntent Constants for intents related to showing speech recognition results. 
RecommendedStreamConfigurationMap Immutable class to store the recommended stream configurations to set up Surfaces for creating a capture session with CameraDevice.createCaptureSession(SessionConfiguration)
Record A base class for all record classes 
Record This is the common base class of all Java language record classes. 
RecordComponent A RecordComponent provides information about, and dynamic access to, a component of a record class. 
RecordIdFilter A class to represent filtering based on record ID or client ID. 
RecordingCanvas A Canvas implementation that records view system drawing operations for deferred rendering. 
RecordingSession An instances of this class represents a session of media recording. 
RecoverableSecurityException Specialization of SecurityException that contains additional information about how to involve the end user to recover from the exception. 
RecoverySystem RecoverySystem contains methods for interacting with the Android recovery system (the separate partition that can be used to install system updates, wipe user data, etc.) 
RecoverySystem.ProgressListener Interface definition for a callback to be invoked regularly as verification proceeds. 
Rect Rect holds four integer coordinates for a rectangle. 
RectEvaluator This evaluator can be used to perform type interpolation between Rect values. 
RectF RectF holds four float coordinates for a rectangle. 
RectShape Defines a rectangle shape. 
RecursiveAction A recursive resultless ForkJoinTask
RecursiveTask<V> A recursive result-bearing ForkJoinTask
ReentrantLock A reentrant mutual exclusion Lock with the same basic behavior and semantics as the implicit monitor lock accessed using synchronized methods and statements, but with extended capabilities. 
ReentrantReadWriteLock An implementation of ReadWriteLock supporting similar semantics to ReentrantLock
ReentrantReadWriteLock.ReadLock The lock returned by method ReentrantReadWriteLock#readLock
ReentrantReadWriteLock.WriteLock The lock returned by method ReentrantReadWriteLock#writeLock
Ref The mapping in the Java programming language of an SQL REF value, which is a reference to an SQL structured type value in the database. 
Reference<T> Abstract base class for reference objects. 
ReferenceQueue<T> Reference queues, to which registered reference objects are appended by the garbage collector after the appropriate reachability changes are detected. 
ReflectiveOperationException Common superclass of exceptions thrown by reflective operations in core reflection. 
ReflectPermission Legacy security code; do not use. 
RegexValidator Defines if a field is valid based on a regular expression (regex). 
Region  
Region.Op  
RegionIterator  
RegisterCredentialDescriptionRequest A request to register a ComponentName that contains an actively provisioned Credential represented by a CredentialDescription
RegistrationManager Manages IMS Service registration state for associated ImsFeatures. 
RegistrationManager.RegistrationCallback Callback class for receiving IMS network Registration callback events. 
RejectedExecutionException Exception thrown by an Executor when a task cannot be accepted for execution. 
RejectedExecutionHandler A handler for tasks that cannot be executed by a ThreadPoolExecutor
RelativeDateTimeFormatter Formats simple relative dates. 
RelativeDateTimeFormatter.AbsoluteUnit Represents an absolute unit. 
RelativeDateTimeFormatter.Direction Represents a direction for an absolute unit e.g "Next Tuesday" or "Last Tuesday" 
RelativeDateTimeFormatter.FormattedRelativeDateTime Represents the result of a formatting operation of a relative datetime. 
RelativeDateTimeFormatter.RelativeDateTimeUnit Represents the unit for formatting a relative date. 
RelativeDateTimeFormatter.RelativeUnit Represents the unit for formatting a relative date. 
RelativeDateTimeFormatter.Style The formatting style 
RelativeLayout A Layout where the positions of the children can be described in relation to each other or to the parent. 
RelativeLayout.LayoutParams Specifies how a view is positioned within a RelativeLayout
RelativeSizeSpan Uniformly scales the size of the text to which it's attached by a certain proportion. 
RemoteAction Represents a remote action that can be called from another process. 
RemoteCallbackList<E extends IInterface> Takes care of the grunt work of maintaining a list of remote interfaces, typically for the use of performing callbacks from a Service to its clients. 
RemoteConference A conference provided to a ConnectionService by another ConnectionService through ConnectionService#conferenceRemoteConnections
RemoteConference.Callback Callback base class for RemoteConference
RemoteConnection A connection provided to a ConnectionService by another ConnectionService running in a different process. 
RemoteConnection.Callback Callback base class for RemoteConnection
RemoteConnection.VideoProvider RemoteConnection.VideoProvider associated with a RemoteConnection
RemoteConnection.VideoProvider.Callback Callback class used by the RemoteConnection.VideoProvider to relay events from the Connection.VideoProvider
RemoteControlClient This class was deprecated in API level 21. Use MediaSession instead. 
RemoteControlClient.MetadataEditor This class was deprecated in API level 21. Use MediaMetadata and MediaSession instead. 
RemoteControlClient.OnGetPlaybackPositionListener Interface definition for a callback to be invoked when the media playback position is queried. 
RemoteControlClient.OnMetadataUpdateListener Interface definition for a callback to be invoked when one of the metadata values has been updated. 
RemoteControlClient.OnPlaybackPositionUpdateListener Interface definition for a callback to be invoked when the media playback position is requested to be updated. 
RemoteController This class was deprecated in API level 21. Use MediaController instead. 
RemoteController.MetadataEditor A class to read the metadata published by a RemoteControlClient, or send a RemoteControlClient new values for keys that can be edited. 
RemoteController.OnClientUpdateListener Interface definition for the callbacks to be invoked whenever media events, metadata and playback status are available. 
RemoteEntry An entry to be shown on the UI. 
RemoteException Parent exception for all Binder remote-invocation errors Note: not all exceptions from binder services will be subclasses of this. 
RemoteInput A RemoteInput object specifies input to be collected from a user to be passed along with an intent inside a PendingIntent that is sent. 
RemoteInput.Builder Builder class for RemoteInput objects. 
RemoteViews A class that describes a view hierarchy that can be displayed in another process. 
RemoteViews.ActionException Exception to send when something goes wrong executing an action 
RemoteViews.DrawInstructions A data parcel that carries the instructions to draw the RemoteViews, as an alternative to XML layout. 
RemoteViews.DrawInstructions.Builder Builder class for DrawInstructions objects. 
RemoteViews.RemoteCollectionItems Representation of a fixed list of items to be displayed in a RemoteViews collection. 
RemoteViews.RemoteCollectionItems.Builder Builder class for RemoteCollectionItems objects. 
RemoteViews.RemoteResponse Class representing a response to an action performed on any element of a RemoteViews. 
RemoteViews.RemoteView This annotation indicates that a subclass of View is allowed to be used with the RemoteViews mechanism. 
RemoteViews.RemoteViewOutlineProvider OutlineProvider for a view with a radius set by RemoteViews.setViewOutlinePreferredRadius(int, float, int)
RemoteViewsService The service to be connected to for a remote adapter to request RemoteViews. 
RemoteViewsService.RemoteViewsFactory An interface for an adapter between a remote collection view (ListView, GridView, etc) and the underlying data for that view. 
RemoveAdSelectionFromOutcomesOverrideRequest This POJO represents the RemoveAdSelectionFromOutcomesOverrideRequest, Executor, OutcomeReceiver) request

It contains one field, a AdSelectionFromOutcomesConfig which serves as the identifier of the override to be removed 

RemoveAdSelectionOverrideRequest This POJO represents the TestAdSelectionManager#removeAdSelectionConfigRemoteInfoOverride( RemoveAdSelectionOverrideRequest, Executor, OutcomeReceiver) request

It contains one field, a AdSelectionConfig which serves as the identifier of the override to be removed 

RemoveByDocumentIdRequest Encapsulates a request to remove documents by namespace and IDs from the AppSearchSession database. 
RemoveByDocumentIdRequest.Builder Builder for RemoveByDocumentIdRequest objects. 
RemoveCustomAudienceOverrideRequest This POJO represents the TestCustomAudienceManager#removeCustomAudienceRemoteInfoOverride( RemoveCustomAudienceOverrideRequest, Executor, OutcomeReceiver) request. 
RemoveCustomAudienceOverrideRequest.Builder Builder for RemoveCustomAudienceOverrideRequest objects. 
RemoveSpaceGesture A subclass of HandwritingGesture for removing whitespace from text. 
RemoveSpaceGesture.Builder Builder for RemoveSpaceGesture
RenamingDelegatingContext This class was deprecated in API level 24. New tests should be written using the Android Testing Support Library. 
RenderEffect Intermediate rendering step used to render drawing commands with a corresponding visual effect. 
RenderingConfig Information returned by IsolatedWorker#onExecute(ExecuteInput, android.os.OutcomeReceiver) that is used in a subesequent call to IsolatedWorker#onRender(RenderInput, android.os.OutcomeReceiver) to identify the content to be displayed in a single View
RenderingConfig.Builder A builder for RenderingConfig 
RenderInput The input data for IsolatedWorker#onRender(RenderInput, android.os.OutcomeReceiver)
RenderNode

RenderNode is used to build hardware accelerated rendering hierarchies. 

RenderOutput The result returned by IsolatedWorker#onRender(RenderInput, android.os.OutcomeReceiver)
RenderOutput.Builder A builder for RenderOutput 
RenderParams Represents a set of parameters that will be used to render a page of the PDF document. 
RenderParams.Builder Builder for constructing RenderParams
RenderProcessGoneDetail This class provides more specific information about why the render process exited. 
RenderScript This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
RenderScript.ContextType ContextType specifies the specific type of context to be created. 
RenderScript.Priority RenderScript worker thread priority enumeration. 
RenderScript.RSErrorHandler The runtime error handler base class. 
RenderScript.RSMessageHandler The base class from which an application should derive in order to receive RS messages from scripts. 
Repeatable The annotation interface java.lang.annotation.Repeatable is used to indicate that the annotation interface whose declaration it (meta-)annotates is repeatable
RepetitiveTest This @interface is deprecated. New tests should be written using the Android Testing Support Library. 
Replaceable Replaceable is an interface representing a string of characters that supports the replacement of a range of itself with a new string of characters. 
ReplacementSpan  
ReplacementTransformationMethod This transformation method causes the characters in the getOriginal() array to be replaced by the corresponding characters in the getReplacement() array. 
ReportEventRequest Request object wrapping the required arguments needed to report an ad event. 
ReportEventRequest.Builder Builder for ReportEventRequest objects. 
ReportImpressionRequest Represent input parameters to the reportImpression API. 
ReportSystemUsageRequest A request to report usage of a document owned by another app from a system UI surface. 
ReportSystemUsageRequest.Builder Builder for ReportSystemUsageRequest objects. 
ReportUsageRequest A request to report usage of a document. 
ReportUsageRequest.Builder Builder for ReportUsageRequest objects. 
RequestLogRecord Contains data that will be written to the REQUESTS table at the end of a call to IsolatedWorker#onExecute(ExecuteInput, android.os.OutcomeReceiver)
RequestLogRecord.Builder A builder for RequestLogRecord 
RequestSurfacePackageException This class was deprecated in API level 36. Exception is used at SdkSandboxManager#requestSurfacePackage which is getting deprecated. 
RequestToken An opaque token that identifies the current request to an IsolatedService
ResolveInfo Information that is returned from resolving an intent against an IntentFilter. 
ResolveInfo.DisplayNameComparator  
ResolverStyle Enumeration of different ways to resolve dates and times. 
ResourceBundle Resource bundles contain locale-specific objects. 
ResourceBundle.Control ResourceBundle.Control defines a set of callback methods that are invoked by the ResourceBundle.getBundle factory methods during the bundle loading process. 
ResourceBusyException Exception thrown when an operation on a MediaDrm object is attempted and hardware resources are not available, due to being in use. 
ResourceCursorAdapter An easy adapter that creates views defined in an XML file. 
ResourceCursorTreeAdapter A fairly simple ExpandableListAdapter that creates views defined in an XML file. 
ResourceMismatchViolation  
Resources Class for accessing an application's resources. 
Resources.NotFoundException This exception is thrown by the resource APIs when a requested resource can not be found. 
Resources.Theme This class holds the current attribute values for a particular theme. 
ResourcesLoader A container for supplying ResourcesProvider(s) to Resources objects. 
ResourcesProvider Provides methods to load resources data from APKs (.apk) and resources tables (eg. 
RespiratoryRateRecord Captures the user's respiratory rate. 
RespiratoryRateRecord.Builder Builder class for RespiratoryRateRecord 
ResponderConfig Defines the configuration of an IEEE 802.11mc Responder. 
ResponderConfig.Builder Builder class used to construct ResponderConfig objects. 
ResponderLocation ResponderLocation is both a Location Configuration Information (LCI) decoder and a Location Civic Report (LCR) decoder for information received from a Wi-Fi Access Point (AP) during Wi-Fi RTT ranging process. 
ResponseCache Represents implementations of URLConnection caches. 
RestingHeartRateRecord Captures the user's resting heart rate. 
RestingHeartRateRecord.Builder Builder class for RestingHeartRateRecord 
RestoreObserver Callback class for receiving progress reports during a restore operation. 
RestrictionEntry Applications can expose restrictions for a restricted user on a multiuser device. 
RestrictionsManager Provides a mechanism for apps to query restrictions imposed by an entity that manages the user. 
RestrictionsReceiver Abstract implementation of a Restrictions Provider BroadcastReceiver. 
Result

An object that implements this interface contains the information needed to build a transformation result tree. 

ResultData This class was deprecated in API level 33. Use PresentationSession instead. 
ResultReceiver Generic interface for receiving a callback result from someone. 
ResultSet A table of data representing a database result set, which is usually generated by executing a statement that queries the database. 
ResultSetMetaData An object that can be used to get information about the types and properties of the columns in a ResultSet object. 
Retention Indicates how long annotations with the annotated interface are to be retained. 
RetentionPolicy Annotation retention policy. 
Rfc822Token This class stores an RFC 822-like name, address, and comment, and provides methods to convert them to quoted strings. 
Rfc822Tokenizer This class works as a Tokenizer for MultiAutoCompleteTextView for address list fields, and also provides a method for converting a string of addresses (such as might be typed into such a field) into a series of Rfc822Tokens. 
RggbChannelVector Immutable class to store a 4-element vector of floats indexable by a bayer RAW 2x2 pixel block. 
Ringtone Ringtone provides a quick method for playing a ringtone, notification, or other similar types of sounds. 
RingtoneManager RingtoneManager provides access to ringtones, notification, and other types of sounds. 
RingtonePreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
RippleDrawable Drawable that shows a ripple effect in response to state changes. 
RoleManager This class provides information about and manages roles. 
RootElement The root XML element. 
RotateAnimation An animation that controls the rotation of an object. 
RotateDrawable

A Drawable that can rotate another Drawable based on the current level value. 

RoundedCorner Represents a rounded corner of the display. 
RoundingMode Specifies a rounding policy for numerical operations capable of discarding precision. 
RoundRectShape Creates a rounded-corner rectangle. 
RouteDiscoveryPreference A media route discovery preference describing the features of routes that media router would like to discover and whether to perform active scanning. 
RouteDiscoveryPreference.Builder Builder for RouteDiscoveryPreference
RouteInfo Represents a network route. 
RouteListingPreference Allows applications to customize the list of routes used for media routing (for example, in the System UI Output Switcher). 
RouteListingPreference.Builder Builder for RouteListingPreference
RouteListingPreference.Item Holds preference information for a specific route in a RouteListingPreference
RouteListingPreference.Item.Builder Builder for Item
RouteSelectionDescriptor Represents a single route selection descriptor as defined in 3GPP TS 24.526. 
RoutingSessionInfo Describes a routing session which is created when a media route is selected. 
RoutingSessionInfo.Builder Builder class for RoutingSessionInfo
RowId The representation (mapping) in the Java programming language of an SQL ROWID value. 
RowIdLifetime Enumeration for RowId life-time values. 
RowSet The interface that adds support to the JDBC API for the JavaBeansTM component model. 
RowSetEvent An Event object generated when an event occurs to a RowSet object. 
RowSetInternal The interface that a RowSet object implements in order to present itself to a RowSetReader or RowSetWriter object. 
RowSetListener An interface that must be implemented by a component that wants to be notified when a significant event happens in the life of a RowSet object. 
RowSetMetaData An object that contains information about the columns in a RowSet object. 
RowSetReader The facility that a disconnected RowSet object calls on to populate itself with rows of data. 
RowSetWriter An object that implements the RowSetWriter interface, called a writer
RSAKey The interface to a public or private key in PKCS#1 v2.2 standard, such as those for RSA, or RSASSA-PSS algorithms. 
RSAKeyGenParameterSpec This class specifies the set of parameters used to generate an RSA key pair. 
RSAMultiPrimePrivateCrtKey The interface to an RSA multi-prime private key, as defined in the PKCS#1 v2.2 standard, using the Chinese Remainder Theorem (CRT) information values. 
RSAMultiPrimePrivateCrtKeySpec This class specifies an RSA multi-prime private key, as defined in the PKCS#1 v2.2 standard using the Chinese Remainder Theorem (CRT) information values for efficiency. 
RSAOtherPrimeInfo This class represents the triplet (prime, exponent, and coefficient) inside RSA's OtherPrimeInfo structure, as defined in the PKCS#1 v2.2 standard. 
RSAPrivateCrtKey The interface to an RSA private key, as defined in the PKCS#1 v2.2 standard, using the Chinese Remainder Theorem (CRT) information values. 
RSAPrivateCrtKeySpec This class specifies an RSA private key, as defined in the PKCS#1 v2.2 standard, using the Chinese Remainder Theorem (CRT) information values for efficiency. 
RSAPrivateKey The interface to an RSA private key. 
RSAPrivateKeySpec This class specifies an RSA private key. 
RSAPublicKey The interface to an RSA public key. 
RSAPublicKeySpec This class specifies an RSA public key. 
RSDriverException This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
RSIllegalArgumentException This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
RSInvalidStateException This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
RSRuntimeException This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
RtpStream This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
RuleBasedCollator

RuleBasedCollator is a concrete subclass of Collator. 

RuleBasedCollator The RuleBasedCollator class is a concrete subclass of Collator that provides a simple, data-driven, table collator. 
Runnable The Runnable interface should be implemented by any class whose instances are intended to be executed by a thread. 
RunnableFuture<V> A Future that is Runnable
RunnableScheduledFuture<V> A ScheduledFuture that is Runnable
Runtime Every Java application has a single instance of class Runtime that allows the application to interface with the environment in which the application is running. 
RuntimeException RuntimeException is the superclass of those exceptions that can be thrown during the normal operation of the Java Virtual Machine. 
RuntimePermission Legacy security code; do not use. 
RuntimeShader

A RuntimeShader calculates a per-pixel color based on the output of a user defined Android Graphics Shading Language (AGSL) function. 

S

SafeBrowsingResponse Used to indicate an action to take when hitting a malicious URL. 
SafeVarargs A programmer assertion that the body of the annotated method or constructor does not perform potentially unsafe operations on its varargs parameter. 
Sampler This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Sampler.Builder Builder for creating non-standard samplers. 
Sampler.Value  
SandboxedSdk Represents an SDK loaded in the sandbox process. 
SandboxedSdkProvider Encapsulates API which SDK sandbox can use to interact with SDKs loaded into it. 
Sanitizer Helper class used to sanitize user input before using it in a save request. 
SaProposal SaProposal represents a proposed configuration to negotiate an IKE or Child SA. 
SaveCallback Handles save requests from the AutofillService into the Activity being autofilled. 
SavedDatasetsInfo A result returned from AutofillService#onSavedDatasetsInfoRequest(SavedDatasetsInfoCallback)
SavedDatasetsInfoCallback Handles the response to AutofillService#onSavedDatasetsInfoRequest(SavedDatasetsInfoCallback)
SaveInfo Information used to indicate that an AutofillService is interested on saving the user-inputed data for future use, through a AutofillService#onSaveRequest(SaveRequest, SaveCallback) call. 
SaveInfo.Builder A builder for SaveInfo objects. 
Savepoint The representation of a savepoint, which is a point within the current transaction that can be referenced from the Connection.rollback method. 
SaveRequest This class represents a request to an autofill provider to save applicable data entered by the user. 
SAXException Encapsulate a general SAX error or warning. 
SAXNotRecognizedException Exception class for an unrecognized identifier. 
SAXNotSupportedException Exception class for an unsupported operation. 
SAXParseException Encapsulate an XML parse error or warning. 
SAXParser Defines the API that wraps an XMLReader implementation class. 
SAXParserFactory Defines a factory API that enables applications to configure and obtain a SAX based parser to parse XML documents. 
SAXResult

Acts as an holder for a transformation Result. 

SAXSource

Acts as an holder for SAX-style Source. 

SAXTransformerFactory This class extends TransformerFactory to provide SAX-specific factory methods. 
Scale A class that defines a quantity by which a number should be multiplied when formatting. 
ScaleAnimation An animation that controls the scale of an object. 
ScaleDrawable A Drawable that changes the size of another Drawable based on its current level value. 
ScaleGestureDetector Detects scaling transformation gestures using the supplied MotionEvents. 
ScaleGestureDetector.OnScaleGestureListener The listener for receiving notifications when gestures occur. 
ScaleGestureDetector.SimpleOnScaleGestureListener A convenience class to extend when you only want to listen for a subset of scaling-related events. 
ScaleXSpan Scales horizontally the size of the text to which it's attached by a certain factor. 
ScanCallback Bluetooth LE scan callbacks. 
ScanFilter Criteria for filtering result from Bluetooth LE scans. 
ScanFilter.Builder Builder class for ScanFilter
Scanner A simple text scanner which can parse primitive types and strings using regular expressions. 
ScanRecord Represents a scan record from Bluetooth LE scan. 
ScanResult ScanResult for Bluetooth LE scan. 
ScanResult Describes information about a detected access point. 
ScanResult.InformationElement information elements from beacon. 
ScanSettings Bluetooth LE scan settings are passed to BluetoothLeScanner#startScan to define the parameters for the scan. 
ScanSettings.Builder Builder for ScanSettings
ScatteringByteChannel A channel that can read bytes into a sequence of buffers. 
Scene A scene represents the collection of values that various properties in the View hierarchy will have when the scene is applied. 
ScheduledExecutorService An ExecutorService that can schedule commands to run after a given delay, or to execute periodically. 
ScheduledFuture<V> A delayed result-bearing action that can be cancelled. 
ScheduledThreadPoolExecutor A ThreadPoolExecutor that can additionally schedule commands to run after a given delay, or to execute periodically. 
Schema Immutable in-memory representation of grammar. 
SchemaChangeInfo Contains information about a schema change detected by an ObserverCallback
SchemaFactory Factory that creates Schema objects. Entry-point to the validation API. 
SchemaFactoryLoader

This class was removed from JAXP 1.3 before it was finalized but was mistakenly included in Java 5. 

SchemaVisibilityConfig A class to hold a all necessary Visibility information corresponding to the same schema. 
SchemaVisibilityConfig.Builder The builder class of SchemaVisibilityConfig
ScientificNotation A class that defines the scientific notation style to be used when formatting numbers in NumberFormatter. 
ScientificNumberFormatter A formatter that formats numbers in user-friendly scientific notation. 
Script This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Script.Builder Only intended for use by generated reflected code. 
Script.FieldBase Only intended for use by generated reflected code. 
Script.FieldID FieldID is an identifier for a Script + exported field pair. 
Script.InvokeID InvokeID is an identifier for an invoke function. 
Script.KernelID KernelID is an identifier for a Script + root function pair. 
Script.LaunchOptions Class for specifying the specifics about how a kernel will be launched. 
ScriptC This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptGroup This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptGroup.Binding Represents a binding of a value to a global variable in a kernel or invocable function. 
ScriptGroup.Builder This class was deprecated in API level 23. Use Builder2 instead. 
ScriptGroup.Builder2 The builder class for creating script groups

A script group is created using closures (see class Closure). 

ScriptGroup.Closure An opaque class for closures

A closure represents a function call to a kernel or invocable function, combined with arguments and values for global variables. 

ScriptGroup.Future An opaque class for futures

A future represents an output of a closure, either the return value of the function, or the value of a global variable written by the function. 

ScriptGroup.Input An opaque class for script group inputs

Created by calling the Builder2#addInput method. 

ScriptIntrinsic This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsic3DLUT This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicBLAS This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicBlend This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicBlur This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicColorMatrix This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicConvolve3x3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicConvolve5x5 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicHistogram This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicLUT This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicResize This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScriptIntrinsicYuvToRGB This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ScrollCaptureCallback A ScrollCaptureCallback is responsible for providing rendered snapshots of scrolling content for the scroll capture system. 
ScrollCaptureSession A session represents the scope of interaction between a ScrollCaptureCallback and the system during an active scroll capture operation. 
ScrollCaptureTarget A target collects the set of contextual information for a ScrollCaptureHandler discovered during a scroll capture search
Scroller

This class encapsulates scrolling. 

ScrollFeedbackProvider Provides feedback to the user for scroll events on a View
ScrollingMovementMethod A movement method that interprets movement keys by scrolling the text buffer. 
ScrollView A view group that allows the view hierarchy placed within it to be scrolled. 
SdkExtensions Methods for interacting with the extension SDK. 
SdkSandboxActivityHandler This is used to notify the SDK when an Activity is created for it. 
SdkSandboxController Controller that is used by SDK loaded in the sandbox to access information provided by the sdk sandbox. 
SdkSandboxManager Provides APIs to load SDKs into the SDK sandbox process, and then interact with them. 
SdkSandboxManager.SdkSandboxProcessDeathCallback A callback for tracking events SDK sandbox death. 
SealedObject This class enables a programmer to create an object and protect its confidentiality with a cryptographic algorithm. 
SearchableInfo Searchability meta-data for an activity. 
SearchEvent Class that contains information about an event that triggers a search. 
SearchIterator SearchIterator is an abstract base class that provides methods to search for a pattern within a text string. 
SearchIterator.ElementComparisonType Option to control how collation elements are compared. 
SearchManager This class provides access to the system search services. 
SearchManager.OnCancelListener See SearchManager#setOnCancelListener for configuring your activity to monitor search UI state. 
SearchManager.OnDismissListener See SearchManager#setOnDismissListener for configuring your activity to monitor search UI state. 
SearchRecentSuggestions This is a utility class providing access to SearchRecentSuggestionsProvider
SearchRecentSuggestionsProvider This superclass can be used to create a simple search suggestions provider for your application. 
SearchResult This class represents one of the results obtained from an AppSearch query. 
SearchResult.Builder Builder for SearchResult objects. 
SearchResult.MatchInfo This class represents match objects for any snippets that might be present in SearchResults from a query. 
SearchResult.MatchInfo.Builder Builder for MatchInfo objects. 
SearchResult.MatchRange Class providing the position range of matching information. 
SearchResults Encapsulates results of a search operation. 
SearchSpec This class represents the specification logic for AppSearch. 
SearchSpec.Builder Builder for objects
SearchSuggestionResult The result class of the AppSearchSession#searchSuggestion
SearchSuggestionResult.Builder The Builder class of SearchSuggestionResult
SearchSuggestionSpec This class represents the specification logic for AppSearch. 
SearchSuggestionSpec.Builder Builder for objects
SearchView A widget that provides a user interface for the user to enter a search query and submit a request to a search provider. 
SearchView.OnCloseListener  
SearchView.OnQueryTextListener Callbacks for changes to the query text. 
SearchView.OnSuggestionListener Callback interface for selection events on suggestions. 
SecretKey A secret (symmetric) key. 
SecretKeyFactory This class represents a factory for secret keys. 
SecretKeyFactorySpi This class defines the Service Provider Interface (SPI) for the SecretKeyFactory class. 
SecretKeySpec This class specifies a secret key in a provider-independent fashion. 
SectionIndexer Interface that may implemented on Adapters to enable fast scrolling between sections of an AbsListView
SectionRequest A request for Section from broadcast signal. 
SectionResponse A response for Section from broadcast signal. 
SecureCacheResponse Represents a cache response originally retrieved through secure means, such as TLS. 
SecureClassLoader This class extends ClassLoader with additional support for defining classes with an associated code source and permissions which are retrieved by the system policy by default. 
SecureDirectoryStream<T> A DirectoryStream that defines operations on files that are located relative to an open directory. 
SecureKeyImportUnavailableException Indicates that the Keystore does not support securely importing wrapped keys. 
SecureRandom This class provides a cryptographically strong random number generator (RNG). 
SecureRandomParameters A marker interface for parameters used in various SecureRandom methods. 
SecureRandomSpi This class defines the Service Provider Interface (SPI) for the SecureRandom class. 
Security

This class centralizes all security properties and common security methods. 

SecurityException Thrown by the security manager to indicate a security violation. 
SecurityLog Definitions for working with security logs. 
SecurityLog.SecurityEvent A class representing a security event log entry. 
SecurityManager Legacy security code; do not use. 
SecurityPermission Legacy security code; do not use. 
SecurityStateManager SecurityStateManager provides the functionality to query the security status of the system and platform components. 
SeekableByteChannel A byte channel that maintains a current position and allows the position to be changed. 
SeekBar A SeekBar is an extension of ProgressBar that adds a draggable thumb. 
SeekBar.OnSeekBarChangeListener A callback that notifies clients when the progress level has been changed. 
SegmentFinder Finds text segment boundaries within text. 
SegmentFinder.PrescribedSegmentFinder The default SegmentFinder implementation based on given segment ranges. 
SelectableChannel A channel that can be multiplexed via a Selector
SelectFormat

SelectFormat supports the creation of internationalized messages by selecting phrases based on keywords. 

SelectGesture A sub-class of HandwritingGesture for selecting an area of text using single rectangle. 
SelectGesture.Builder Builder for SelectGesture
Selection Utility class for manipulating cursors and selections in CharSequences. 
SelectionBoundary Represents one edge of the selected content. 
SelectionEvent A selection event. 
SelectionKey A token representing the registration of a SelectableChannel with a Selector
Selector A multiplexor of SelectableChannel objects. 
SelectorProvider Service-provider class for selectors and selectable channels. 
SelectRangeGesture A subclass of HandwritingGesture for selecting a range of text by defining start and end rectangles. 
SelectRangeGesture.Builder Builder for SelectRangeGesture
SelectWalletCardRequest Represents a request to a QuickAccessWalletService to select a particular walletCard
Semaphore A counting semaphore. 
Sensor Class representing a sensor. 
SensorAdditionalInfo This class represents a Sensor additional information frame, which is reported through listener callback onSensorAdditionalInfo
SensorDirectChannel Class representing a sensor direct channel. 
SensorEvent This class represents a Sensor event and holds information such as the sensor's type, the time-stamp, accuracy and of course the sensor's data
SensorEventCallback Used for receiving sensor additional information frames. 
SensorEventListener Used for receiving notifications from the SensorManager when there is new sensor data. 
SensorEventListener2 Used for receiving a notification when a flush() has been successfully completed. 
SensorListener This interface was deprecated in API level 3. Use SensorEventListener instead. 
SensorManager

SensorManager lets you access the device's sensors

SensorManager.DynamicSensorCallback Used for receiving notifications from the SensorManager when dynamic sensors are connected or disconnected. 
SensorPrivacyManager This class provides information about the microphone and camera toggles. 
SensorPrivacyManager.Sensors Sensor constants which are used in SensorPrivacyManager 
SentenceSuggestionsInfo This class contains a metadata of suggestions returned from a text service (e.g. SpellCheckerService). 
SequencedCollection<E> A collection that has a well-defined encounter order, that supports operations at both ends, and that is reversible. 
SequencedMap<K, V> A Map that has a well-defined encounter order, that supports operations at both ends, and that is reversible. 
SequencedSet<E> A collection that is both a SequencedCollection and a Set
SequenceInputStream A SequenceInputStream represents the logical concatenation of other input streams. 
Serial Indicates that an annotated field or method is part of the serialization mechanism defined by the Java Object Serialization Specification
Serializable Serializability of a class is enabled by the class implementing the java.io.Serializable interface. 
SerializablePermission This legacy security is not supported on Android. 
ServerSocket This class implements server sockets. 
ServerSocketChannel A selectable channel for stream-oriented listening sockets. 
ServerSocketFactory This class creates server sockets. 
Service A Service is an application component representing either an application's desire to perform a longer-running operation while not interacting with the user or to supply functionality for other applications to use. 
ServiceConfigurationError Error thrown when something goes wrong while locating, loading, or instantiating a service provider. 
ServiceConnection Interface for monitoring the state of an application service. 
ServiceConnectionLeakedViolation  
ServiceDiscoveryInfo An object providing information about a Wi-Fi Aware discovery session with a specific peer. 
ServiceHealthStats Keys for HealthStats returned from HealthStats.getStats(int) with the PackageHealthStats.STATS_SERVICES key. 
ServiceInfo Information you can retrieve about a particular application service. 
ServiceInfo Describes a cell-broadcast service. 
ServiceLoader<S> A facility to load implementations of a service. 
ServiceLoader.Provider<S> Represents a service provider located by ServiceLoader
ServiceStartNotAllowedException Exception thrown when an app tries to start a Service when it's not allowed to do so. 
ServiceState Contains phone state and service related information. 
ServiceTestCase<T extends Service> This class was deprecated in API level 24. Use ServiceTestRule instead. New tests should be written using the Android Testing Support Library. 
ServiceWorkerClient Base class for clients to capture Service Worker related callbacks, see ServiceWorkerController for usage example. 
ServiceWorkerController Manages Service Workers used by WebView. 
ServiceWorkerWebSettings Manages settings state for all Service Workers. 
SEService The SEService realises the communication to available Secure Elements on the device. 
SEService.OnConnectedListener Interface to send call-backs to the application when the service is connected. 
Session Instances of this class represent a connection session to one of the Secure Elements available on the device. 
Session2Command This API is not generally intended for third party application developers. 
Session2Command.Result This API is not generally intended for third party application developers. 
Session2CommandGroup This API is not generally intended for third party application developers. 
Session2CommandGroup.Builder This API is not generally intended for third party application developers. 
Session2Token This API is not generally intended for third party application developers. 
SessionConfiguration A helper class that aggregates all supported arguments for capture session initialization. 
SessionTranscriptMismatchException Thrown when trying use multiple different session transcripts in the same presentation session. 
Set<E> A collection that contains no duplicate elements. 
SetAppInstallAdvertisersRequest Represents input parameters to the setAppInstallAdvertiser API. 
SetAppInstallAdvertisersRequest.Builder  
SetSchemaRequest Encapsulates a request to update the schema of an AppSearchSession database. 
SetSchemaRequest.Builder Builder for SetSchemaRequest objects. 
SetSchemaResponse The response class of AppSearchSession#setSchema 
SetSchemaResponse.Builder Builder for SetSchemaResponse objects. 
SetSchemaResponse.MigrationFailure The class represents a post-migrated GenericDocument that failed to be saved by AppSearchSession#setSchema
SettingInjectorService Dynamically specifies the summary (subtitle) and enabled status of a preference injected into the list of app settings displayed by the system settings app

For use only by apps that are included in the system image, for preferences that affect multiple apps. 

Settings The Settings provider contains global system-level device preferences. 
Settings.Global Global system settings, containing preferences that always apply identically to all defined users. 
Settings.NameValueTable Common base for tables of name/value settings. 
Settings.Panel

A Settings panel is floating UI that contains a fixed subset of settings to address a particular user problem. 

Settings.Secure Secure system settings, containing system preferences that applications can read but are not allowed to write. 
Settings.SettingNotFoundException  
Settings.System System settings, containing miscellaneous system preferences. 
SettingsSlicesContract Provides a contract for platform-supported Settings Slices
SexualActivityRecord Captures an occurrence of sexual activity. 
SexualActivityRecord.Builder Builder class for SexualActivityRecord 
SexualActivityRecord.SexualActivityProtectionUsed Identifier for sexual activity protection used 
Shader Shader is the base class for objects that return horizontal spans of colors during drawing. 
Shader.TileMode  
Shape Defines a generic graphical "shape."

Any Shape can be drawn to a Canvas with its own draw() method, but more graphical control is available if you instead pass it to a ShapeDrawable

ShapeDrawable A Drawable object that draws primitive shapes. 
ShapeDrawable.ShaderFactory Base class defines a factory object that is called each time the drawable is resized (has a new width or height). 
ShareActionProvider This is a provider for a share action. 
ShareActionProvider.OnShareTargetSelectedListener Listener for the event of selecting a share target. 
SharedElementCallback Listener provided in Activity#setEnterSharedElementCallback(SharedElementCallback) and Activity#setExitSharedElementCallback(SharedElementCallback) as well as Fragment#setEnterSharedElementCallback(SharedElementCallback) and Fragment#setExitSharedElementCallback(SharedElementCallback) to monitor the Shared element transitions. 
SharedElementCallback.OnSharedElementsReadyListener Listener to be called after SharedElementCallback.onSharedElementsArrived(java.util.List, java.util.List, android.app.SharedElementCallback.OnSharedElementsReadyListener) when the shared elements are ready to be hidden in the source Activity and shown in the destination Activity. 
SharedLibraryInfo This class provides information for a shared library. 
SharedMemory SharedMemory enables the creation, mapping, and protection control over anonymous shared memory. 
SharedPreferences Interface for accessing and modifying preference data returned by Context.getSharedPreferences(String, int)
SharedPreferences.Editor Interface used for modifying values in a SharedPreferences object. 
SharedPreferences.OnSharedPreferenceChangeListener Interface definition for a callback to be invoked when a shared preference is changed. 
SharedPreferencesBackupHelper A helper class that can be used in conjunction with BackupAgentHelper to manage the backup of SharedPreferences
Short The Short class wraps a value of primitive type short in an object. 
Short2 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Short3 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Short4 This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
ShortBuffer A short buffer. 
ShortBufferException This exception is thrown when an output buffer provided by the user is too short to hold the operation result. 
ShortcutInfo Represents a shortcut that can be published via ShortcutManager
ShortcutInfo.Builder Builder class for ShortcutInfo objects. 
ShortcutManager

ShortcutManager executes operations on an app's set of shortcuts, which represent specific tasks and actions that users can perform within your app. 

ShutdownChannelGroupException Unchecked exception thrown when an attempt is made to construct a channel in a group that is shutdown or the completion handler for an I/O operation cannot be invoked because the channel group has terminated. 
SidePropagation A TransitionPropagation that propagates based on the distance to the side and, orthogonally, the distance to epicenter. 
SignalStrength Contains phone signal strength related information. 
SignalStrengthUpdateRequest Request used to register SignalThresholdInfo to be notified when the signal strength breach the specified thresholds. 
SignalStrengthUpdateRequest.Builder Builder class to create SignalStrengthUpdateRequest object. 
SignalThresholdInfo Defines the threshold value of the signal strength. 
SignalThresholdInfo.Builder Builder class to create SignalThresholdInfo objects. 
Signature Opaque, immutable representation of a signing certificate associated with an application package. 
Signature The Signature class is used to provide applications the functionality of a digital signature algorithm. 
SignatureException This is the generic Signature exception. 
SignatureSpi This class defines the Service Provider Interface (SPI) for the Signature class, which is used to provide the functionality of a digital signature algorithm. 
SignedContextualAds Contains a list of buyer supplied AdWithBid bundle and its signature. 
SignedContextualAds.Builder Builder for SignedContextualAds object 
SignedObject

SignedObject is a class for the purpose of creating authentic runtime objects whose integrity cannot be compromised without being detected. 

Signer This class was deprecated in API level 3. This class is deprecated and subject to removal in a future version of Java SE. It has been replaced by java.security.KeyStore, the java.security.cert package, and java.security.Principal. 
SigningInfo Information pertaining to the signing certificates used to sign a package. 
SignStyle Enumeration of ways to handle the positive/negative sign. 
SimPhonebookContract The contract between the provider of contact records on the device's SIM cards and applications. 
SimPhonebookContract.ElementaryFiles Constants for metadata about the elementary files of the SIM cards in the phone. 
SimPhonebookContract.SimRecords Constants for the contact records on a SIM card. 
SimpleAdapter An easy adapter to map static data to views defined in an XML file. 
SimpleAdapter.ViewBinder This class can be used by external clients of SimpleAdapter to bind values to views. 
SimpleCursorAdapter An easy adapter to map columns from a cursor to TextViews or ImageViews defined in an XML file. 
SimpleCursorAdapter.CursorToStringConverter This class can be used by external clients of SimpleCursorAdapter to define how the Cursor should be converted to a String. 
SimpleCursorAdapter.ViewBinder This class can be used by external clients of SimpleCursorAdapter to bind values fom the Cursor to views. 
SimpleCursorTreeAdapter An easy adapter to map columns from a cursor to TextViews or ImageViews defined in an XML file. 
SimpleCursorTreeAdapter.ViewBinder This class can be used by external clients of SimpleCursorTreeAdapter to bind values from the Cursor to views. 
SimpleDateFormat [icu enhancement] ICU's replacement for SimpleDateFormat. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
SimpleDateFormat SimpleDateFormat is a concrete class for formatting and parsing dates in a locale-sensitive manner. 
SimpleExpandableListAdapter An easy adapter to map static data to group and child views defined in an XML file. 
SimpleFileVisitor<T> A simple visitor of files with default behavior to visit all files and to re-throw I/O errors. 
SimpleFormatter Print a brief summary of the LogRecord in a human readable format. 
SimpleNotation A class that defines the simple notation style to be used when formatting numbers in NumberFormatter. 
SimpleTimeZone SimpleTimeZone is a concrete subclass of TimeZone that represents a time zone for use with a Gregorian calendar. 
SingleLaunchActivityTestCase<T extends Activity> This class was deprecated in API level 24. Use ActivityTestRule instead. New tests should be written using the Android Testing Support Library. 
SingleLineTransformationMethod This transformation method causes any newline characters (\n) to be displayed as spaces instead of causing line breaks, and causes carriage return characters (\r) to have no appearance. 
SipAudioCall This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipAudioCall.Listener Listener for events relating to a SIP call, such as when a call is being received ("on ringing") or a call is outgoing ("on calling"). 
SipDetails Contains the information for SIP. 
SipErrorCode This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipException This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipManager This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipProfile This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipProfile.Builder Helper class for creating a SipProfile
SipRegistrationListener This interface was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipSession This class was deprecated in API level 31. SipManager and associated classes are no longer supported and should not be used as the basis of future VOIP apps. 
SipSession.Listener Listener for events relating to a SIP session, such as when a session is being registered ("on registering") or a call is outgoing ("on calling"). 
SipSession.State Defines SIP session states, such as "registering", "outgoing call", and "in call". 
Size Immutable class for describing width and height dimensions in pixels. 
SizeF Immutable class for describing width and height dimensions in some arbitrary unit. 
SkinTemperatureRecord Captures the skin temperature of a user. 
SkinTemperatureRecord.Builder Builder class for SkinTemperatureRecord 
SkinTemperatureRecord.Delta Skin temperature delta entry of SkinTemperatureRecord
SleepSessionRecord Captures the user's sleep length and its stages. 
SleepSessionRecord.Builder Builder class for SleepSessionRecord 
SleepSessionRecord.Stage Captures the user's length and type of sleep. 
SleepSessionRecord.StageType Identifier for sleeping stage, as returned by Stage#getType()
Slice This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
Slice.Builder This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
SliceItem This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
SliceManager This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
SliceMetrics This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
SliceProvider This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
SliceSpec This class was deprecated in API level 35. Slice framework has been deprecated, it will not receive any updates from ERROR(/android.os.Build.VANILLA_ICE_CREAM) and forward. If you are looking for a framework that sends displayable data from one app to another, consider using AppSearchManager. 
Slide This transition tracks changes to the visibility of target views in the start and end scenes and moves views in or out from one of the edges of the scene. 
SlidingDrawer This class was deprecated in API level 17. This class is not supported anymore. It is recommended you base your own implementation on the source code for the Android Open Source Project if you must use it in your application. 
SlidingDrawer.OnDrawerCloseListener Callback invoked when the drawer is closed. 
SlidingDrawer.OnDrawerOpenListener Callback invoked when the drawer is opened. 
SlidingDrawer.OnDrawerScrollListener Callback invoked when the drawer is scrolled. 
SmallTest This @interface was deprecated in API level 24. Use SmallTest instead. New tests should be written using the Android Testing Support Library. 
Smoke This @interface was deprecated in API level 24. New tests should be written using the Android Testing Support Library. 
SmsManager Manages SMS operations such as sending data, text, and pdu SMS messages. 
SmsManager This class was deprecated in API level 4. Replaced by android.telephony.SmsManager that supports both GSM and CDMA. 
SmsManager.FinancialSmsCallback callback for providing asynchronous sms messages for financial app. 
SmsMessage A Short Message Service message. 
SmsMessage This class was deprecated in API level 4. Replaced by android.telephony.SmsMessage that supports both GSM and CDMA. 
SmsMessage.MessageClass SMS Class enumeration. 
SmsMessage.MessageClass This enum was deprecated in API level 4. Use android.telephony.SmsMessage. 
SmsMessage.SubmitPdu  
SmsMessage.SubmitPdu This class was deprecated in API level 4. Use android.telephony.SmsMessage. 
SNIHostName Instances of this class represent a server name of type host_name in a Server Name Indication (SNI) extension. 
SNIMatcher Instances of this class represent a matcher that performs match operations on an SNIServerName instance. 
SNIServerName Instances of this class represent a server name in a Server Name Indication (SNI) extension. 
Socket This class implements client sockets (also called just "sockets"). 
SocketAddress This class represents a Socket Address with no protocol attachment. 
SocketChannel A selectable channel for stream-oriented connecting sockets. 
SocketException Thrown to indicate that there is an error creating or accessing a Socket. 
SocketFactory This class creates sockets. 
SocketFactory This interface was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
SocketHandler Simple network logging Handler
SocketImpl The abstract class SocketImpl is a common superclass of all classes that actually implement sockets. 
SocketImplFactory This interface defines a factory for socket implementations. 
SocketKeepalive Allows applications to request that the system periodically send specific packets on their behalf, using hardware offload to save battery power. 
SocketKeepalive.Callback The callback which app can use to learn the status changes of SocketKeepalive
SocketOption<T> A socket option associated with a socket. 
SocketOptions Interface of methods to get/set socket options. 
SocketPermission Legacy security code; do not use. 
SocketTimeoutException Signals that a timeout has occurred on a socket read or accept. 
SoftApConfiguration Configuration for a soft access point (a.k.a. 
SoftReference<T> Soft reference objects, which are cleared at the discretion of the garbage collector in response to memory demand. 
SortedMap<K, V> A Map that further provides a total ordering on its keys. 
SortedSet<E> A Set that further provides a total ordering on its elements. 
SoundEffectConstants Constants to be used to play sound effects via View#playSoundEffect(int) 
SoundPool The SoundPool class manages and plays audio resources for applications. 
SoundPool.Builder Builder class for SoundPool objects. 
SoundPool.OnLoadCompleteListener  
Source An object that implements this interface contains the information needed to act as source input (XML source or transformation instructions). 
SourceLocator This interface is primarily for the purposes of reporting where an error occurred in the XML source or transformation instructions. 
SourceRegistrationRequest Class to hold input to measurement source registration calls. 
SourceRegistrationRequest.Builder Builder for SourceRegistrationRequest
Space Space is a lightweight View subclass that may be used to create gaps between components in general purpose layouts. 
Spannable This is the interface for text to which markup objects can be attached and detached. 
Spannable.Factory Factory used by TextView to create new Spannables
SpannableString This is the class for text whose content is immutable but to which markup objects can be attached and detached. 
SpannableStringBuilder This is the class for text whose content and markup can both be changed. 
Spanned This is the interface for text that has markup objects attached to ranges of it. 
SpannedString This is the class for text whose content and markup are immutable. 
SpanWatcher When an object of this type is attached to a Spannable, its methods will be called to notify it that other markup objects have been added, changed, or removed. 
SparseArray<E> SparseArray maps integers to Objects and, unlike a normal array of Objects, its indices can contain gaps. 
SparseBooleanArray SparseBooleanArrays map integers to booleans. 
SparseIntArray SparseIntArrays map integers to integers. 
SparseLongArray SparseLongArrays map integers to longs. 
Spatializer Spatializer provides access to querying capabilities and behavior of sound spatialization on the device. 
Spatializer.OnHeadTrackerAvailableListener Interface to be notified of changes to the availability of a head tracker on the audio device to be used by the spatializer effect. 
Spatializer.OnSpatializerStateChangedListener An interface to be notified of changes to the state of the spatializer effect. 
SpeechRecognizer This class provides access to the speech recognition service. 
SpeedRecord Captures the user's speed, e.g. during running or cycling. 
SpeedRecord.Builder Builder class for SpeedRecord 
SpeedRecord.SpeedRecordSample Represents a single measurement of the speed, a scalar magnitude. 
SpellCheckerInfo This class is used to specify meta information of a spell checker. 
SpellCheckerService SpellCheckerService provides an abstract base class for a spell checker. 
SpellCheckerService.Session This abstract class should be overridden by a concrete implementation of a spell checker. 
SpellCheckerSession The SpellCheckerSession interface provides the per client functionality of SpellCheckerService. 
SpellCheckerSession.SpellCheckerSessionListener Callback for getting results from text services 
SpellCheckerSession.SpellCheckerSessionParams Parameters used to create a SpellCheckerSession
SpellCheckerSession.SpellCheckerSessionParams.Builder Builder of SpellCheckerSessionParams
SpellCheckerSubtype This class is used to specify meta information of a subtype contained in a spell checker. 
Spinner A view that displays one child at a time and lets the user pick among them. 
SpinnerAdapter Extended Adapter that is the bridge between a Spinner and its data. 
SplashScreen The interface that apps use to talk to the splash screen. 
SplashScreen.OnExitAnimationListener Listens for the splash screen exit event. 
SplashScreenView

The view which allows an activity to customize its splash screen exit animation. 

Spliterator<T> An object for traversing and partitioning elements of a source. 
Spliterator.OfDouble A Spliterator specialized for double values. 
Spliterator.OfInt A Spliterator specialized for int values. 
Spliterator.OfLong A Spliterator specialized for long values. 
Spliterator.OfPrimitive<T, T_CONS, T_SPLITR extends OfPrimitive<T, T_CONS, T_SPLITR>> A Spliterator specialized for primitive values. 
Spliterators Static classes and methods for operating on or creating instances of Spliterator and its primitive specializations Spliterator.OfInt, Spliterator.OfLong, and Spliterator.OfDouble
Spliterators.AbstractDoubleSpliterator An abstract Spliterator.OfDouble that implements trySplit to permit limited parallelism. 
Spliterators.AbstractIntSpliterator An abstract Spliterator.OfInt that implements trySplit to permit limited parallelism. 
Spliterators.AbstractLongSpliterator An abstract Spliterator.OfLong that implements trySplit to permit limited parallelism. 
Spliterators.AbstractSpliterator<T> An abstract Spliterator that implements trySplit to permit limited parallelism. 
SplittableRandom A generator of uniform pseudorandom values (with period 264) applicable for use in (among other contexts) isolated parallel computations that may generate subtasks. 
SQLClientInfoException The subclass of SQLException is thrown when one or more client info properties could not be set on a Connection
SQLData The interface used for the custom mapping of an SQL user-defined type (UDT) to a class in the Java programming language. 
SQLDataException The subclass of SQLException thrown when the SQLState class value is '22', or under vendor-specified conditions. 
SQLException An exception that indicates there was an error with SQL parsing or execution. 
SQLException

An exception that provides information on a database access error or other errors. 

SQLFeatureNotSupportedException The subclass of SQLException thrown when the SQLState class value is '0A' ( the value is 'zero' A). 
SQLInput An input stream that contains a stream of values representing an instance of an SQL structured type or an SQL distinct type. 
SQLIntegrityConstraintViolationException The subclass of SQLException thrown when the SQLState class value is '23', or under vendor-specified conditions. 
SQLInvalidAuthorizationSpecException The subclass of SQLException thrown when the SQLState class value is '28', or under vendor-specified conditions. 
SQLiteAbortException An exception that indicates that the SQLite program was aborted. 
SQLiteAccessPermException This exception class is used when sqlite can't access the database file due to lack of permissions on the file. 
SQLiteBindOrColumnIndexOutOfRangeException Thrown if the bind or column parameter index is out of range. 
SQLiteBlobTooBigException  
SQLiteCantOpenDatabaseException  
SQLiteClosable An object created from a SQLiteDatabase that can be closed. 
SQLiteConstraintException An exception that indicates that an integrity constraint was violated. 
SQLiteCursor A Cursor implementation that exposes results from a query on a SQLiteDatabase
SQLiteCursorDriver A driver for SQLiteCursors that is used to create them and gets notified by the cursors it creates on significant events in their lifetimes. 
SQLiteDatabase Exposes methods to manage a SQLite database. 
SQLiteDatabase.CursorFactory Used to allow returning sub-classes of Cursor when calling query. 
SQLiteDatabase.OpenParams Wrapper for configuration parameters that are used for opening SQLiteDatabase 
SQLiteDatabase.OpenParams.Builder Builder for OpenParams
SQLiteDatabaseCorruptException An exception that indicates that the SQLite database file is corrupt. 
SQLiteDatabaseLockedException Thrown if the database engine was unable to acquire the database locks it needs to do its job. 
SQLiteDatatypeMismatchException  
SQLiteDiskIOException Indicates that an IO error occurred while accessing the SQLite database file. 
SQLiteDoneException An exception that indicates that the SQLite program is done. 
SQLiteException A SQLite exception that indicates there was an error with SQL parsing or execution. 
SQLiteFullException An exception that indicates that the SQLite database is full. 
SQLiteMisuseException This error can occur if the application creates a SQLiteStatement object and allows multiple threads in the application use it at the same time. 
SqliteObjectLeakedViolation  
SQLiteOpenHelper A helper class to manage database creation and version management. 
SQLiteOutOfMemoryException  
SQLiteProgram A base class for compiled SQLite programs. 
SQLiteQuery Represents a query that reads the resulting rows into a SQLiteQuery
SQLiteQueryBuilder This is a convenience class that helps build SQL queries to be sent to SQLiteDatabase objects. 
SQLiteRawStatement A SQLiteRawStatement represents a SQLite prepared statement. 
SQLiteReadOnlyDatabaseException  
SQLiteStatement Represents a statement that can be executed against a database. 
SQLiteTableLockedException  
SQLiteTransactionListener A listener for transaction events. 
SQLNonTransientConnectionException The subclass of SQLException thrown for the SQLState class value '08', or under vendor-specified conditions. 
SQLNonTransientException The subclass of SQLException thrown when an instance where a retry of the same operation would fail unless the cause of the SQLException is corrected. 
SQLOutput The output stream for writing the attributes of a user-defined type back to the database. 
SQLPermission Legacy security code; do not use. 
SQLRecoverableException The subclass of SQLException thrown in situations where a previously failed operation might be able to succeed if the application performs some recovery steps and retries the entire transaction or in the case of a distributed transaction, the transaction branch. 
SQLSyntaxErrorException The subclass of SQLException thrown when the SQLState class value is '42', or under vendor-specified conditions. 
SQLTimeoutException

The subclass of SQLException thrown when the timeout specified by Statement has expired. 

SQLTransactionRollbackException The subclass of SQLException thrown when the SQLState class value is '40', or under vendor-specified conditions. 
SQLTransientConnectionException The subclass of SQLException for the SQLState class value '08', or under vendor-specified conditions. 
SQLTransientException The subclass of SQLException is thrown in situations where a previoulsy failed operation might be able to succeed when the operation is retried without any intervention by application-level functionality. 
SQLWarning

An exception that provides information on database access warnings. 

SQLXML The mapping in the JavaTM programming language for the SQL XML type. 
SslCertificate SSL certificate info (certificate details) class 
SslCertificate.DName A distinguished name helper class: a 3-tuple of:
  • the most specific common name (CN)
  • the most specific organization (O)
  • the most specific organizational unit (OU)
    •  
SSLCertificateSocketFactory This class was deprecated in API level 29. This class has less error-prone replacements using standard APIs. To create an SSLSocket, obtain an SSLSocketFactory from SSLSocketFactory#getDefault() or SSLContext.getSocketFactory(). To verify hostnames, pass "HTTPS" to SSLParameters.setEndpointIdentificationAlgorithm(String). To enable ALPN, use SSLParameters.setApplicationProtocols(String[]). To enable SNI, use SSLParameters.setServerNames(java.util.List). 
SSLContext Instances of this class represent a secure socket protocol implementation which acts as a factory for secure socket factories or SSLEngines. 
SSLContextSpi This class defines the Service Provider Interface (SPI) for the SSLContext class. 
SSLEngine A class which enables secure communications using protocols such as the Secure Sockets Layer (SSL) or IETF RFC 2246 "Transport Layer Security" (TLS) protocols, but is transport independent. 
SSLEngineResult An encapsulation of the result state produced by SSLEngine I/O calls. 
SSLEngineResult.HandshakeStatus An SSLEngineResult enum describing the current handshaking state of this SSLEngine
SSLEngineResult.Status An SSLEngineResult enum describing the overall result of the SSLEngine operation. 
SSLEngines Static utility methods for accessing additional functionality of supported instances of SSLEngine
SslError This class represents a set of one or more SSL errors and the associated SSL certificate. 
SslErrorHandler Represents a request for handling an SSL error. 
SSLException Indicates some kind of error detected by an SSL subsystem. 
SSLHandshakeException Indicates that the client and server could not negotiate the desired level of security. 
SSLKeyException Reports a bad SSL key. 
SSLParameters Encapsulates parameters for an SSL/TLS connection. 
SSLPeerUnverifiedException Indicates that the peer's identity has not been verified. 
SSLPermission Legacy security code; do not use. 
SSLProtocolException Reports an error in the operation of the SSL protocol. 
SSLServerSocket This class extends ServerSockets and provides secure server sockets using protocols such as the Secure Sockets Layer (SSL) or Transport Layer Security (TLS) protocols. 
SSLServerSocketFactory SSLServerSocketFactorys create SSLServerSockets. 
SSLSession In SSL, sessions are used to describe an ongoing relationship between two entities. 
SSLSessionBindingEvent This event is propagated to a SSLSessionBindingListener. 
SSLSessionBindingListener This interface is implemented by objects which want to know when they are being bound or unbound from a SSLSession. 
SSLSessionCache File-based cache of established SSL sessions. 
SSLSessionContext A SSLSessionContext represents a set of SSLSessions associated with a single entity. 
SSLSocket This class extends Sockets and provides secure socket using protocols such as the "Secure Sockets Layer" (SSL) or IETF "Transport Layer Security" (TLS) protocols. 
SSLSocketFactory SSLSocketFactorys create SSLSockets. 
SSLSocketFactory This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
SSLSockets Static utility methods for accessing additional functionality of supported instances of SSLSocket
Stack<E> The Stack class represents a last-in-first-out (LIFO) stack of objects. 
StackOverflowError Thrown when a stack overflow occurs because an application recurses too deeply. 
StackTraceElement An element in a stack trace, as returned by Throwable.getStackTrace()
StackView  
StackWalker A stack walker. 
StackWalker.Option Stack walker option to configure the stack frame information obtained by a StackWalker
StackWalker.StackFrame A StackFrame object represents a method invocation returned by StackWalker
StaleDataException This exception is thrown when a Cursor contains stale data and must be requeried before being used again. 
StampedLock A capability-based lock with three modes for controlling read/write access. 
StandardCharsets Constant definitions for the standard Charsets
StandardConstants Standard constants definitions 
StandardCopyOption Defines the standard copy options. 
StandardOpenOption Defines the standard open options. 
StandardProtocolFamily Defines the standard families of communication protocols. 
StandardSocketOptions Defines the standard socket options. 
StandardWatchEventKinds Defines the standard event kinds. 
StartElementListener Listens for the beginning of elements. 
StartForegroundCalledOnStoppedServiceException Exception thrown when Service#startForeground is called on a service that's not actually started. 
StatelessTemplate A template for a Control which has no state. 
StateListAnimator Lets you define a number of Animators that will run on the attached View depending on the View's drawable state. 
StateListDrawable Lets you assign a number of graphic images to a single Drawable and swap out the visible item by a string ID value. 
Statement

The object used for executing a static SQL statement and returning the results it produces. 

StatementEvent A StatementEvent is sent to all StatementEventListeners which were registered with a PooledConnection
StatementEventListener An object that registers to be notified of events that occur on PreparedStatements that are in the Statement pool. 
StateSet State sets are arrays of positive ints where each element represents the state of a View (e.g. 
StatFs Retrieve overall information about the space on a filesystem. 
StaticInspectionCompanionProvider An inspection companion provider that finds companions as inner classes or generated code. 
StaticIpConfiguration Class that describes static IP configuration. 
StaticIpConfiguration.Builder Helper class to build a new instance of StaticIpConfiguration
StaticLayout StaticLayout is a Layout for text that will not be edited after it is laid out. 
StaticLayout.Builder Builder for static layouts. 
StatsLog StatsLog provides an API for developers to send events to statsd. 
StatusBarManager Allows an app to control the status bar. 
StatusBarNotification Class encapsulating a Notification. 
StatusHints Contains status label and icon displayed in the in-call UI. 
StepsCadenceRecord Captures the user's steps cadence. 
StepsCadenceRecord.Builder Builder class for StepsCadenceRecord 
StepsCadenceRecord.StepsCadenceRecordSample Represents a single measurement of the steps cadence. 
StepsRecord Captures the number of steps taken since the last reading. 
StepsRecord.Builder Builder class for StepsRecord 
StorageInfo The response class of AppSearchSession#getStorageInfo
StorageInfo.Builder Builder for StorageInfo objects. 
StorageManager StorageManager is the interface to the systems storage service. 
StorageManager.StorageVolumeCallback Callback that delivers StorageVolume related events. 
StorageStats Storage statistics for a UID, package, or UserHandle on a single storage volume. 
StorageStatsManager Access to detailed storage statistics. 
StorageVolume Information about a shared/external storage volume for a specific user. 
Stream<T> A sequence of elements supporting sequential and parallel aggregate operations. 
Stream.Builder<T> A mutable builder for a Stream
StreamConfigurationMap Immutable class to store the available stream configurations to set up Surfaces for creating a capture session with CameraDevice.createCaptureSession(SessionConfiguration)
StreamCorruptedException Thrown when control information that was read from an object stream violates internal consistency checks. 
StreamEventRequest A request for Stream Event from broadcast signal. 
StreamEventResponse A response for Stream Event from broadcast signal. 
StreamHandler Stream based logging Handler
StreamingService Class used to represent a single MBMS stream. 
StreamingServiceCallback A callback class for use when the application is actively streaming content. 
StreamingServiceInfo Describes a single MBMS streaming service. 
StreamResult

Acts as an holder for a transformation result, which may be XML, plain Text, HTML, or some other form of markup. 

StreamSource

Acts as an holder for a transformation Source in the form of a stream of XML markup. 

StreamSupport Low-level utility methods for creating and manipulating streams. 
StreamTokenizer The StreamTokenizer class takes an input stream and parses it into "tokens", allowing the tokens to be read one at a time. 
StrictHostnameVerifier This class was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
StrictMath The class StrictMath contains methods for performing basic numeric operations such as the elementary exponential, logarithm, square root, and trigonometric functions. 
StrictMode StrictMode is a developer tool which detects things you might be doing by accident and brings them to your attention so you can fix them. 
StrictMode.OnThreadViolationListener When #StrictMode.ThreadPolicy.Builder.penaltyListener(Executor, OnThreadViolationListener) is enabled, the listener is called on the provided executor when a Thread violation occurs. 
StrictMode.OnVmViolationListener When #StrictMode.VmPolicy.Builder.penaltyListener(Executor, OnVmViolationListener) is enabled, the listener is called on the provided executor when a VM violation occurs. 
StrictMode.ThreadPolicy StrictMode policy applied to a certain thread. 
StrictMode.ThreadPolicy.Builder Creates ThreadPolicy instances. 
StrictMode.VmPolicy StrictMode policy applied to all threads in the virtual machine's process. 
StrictMode.VmPolicy.Builder Creates VmPolicy instances. 
StrikethroughSpan A span that strikes through the text it's attached to. 
String The String class represents character strings. 
StringBuffer A thread-safe, mutable sequence of characters. 
StringBufferInputStream This class was deprecated in API level 1. This class does not properly convert characters into bytes. As of JDK 1.1, the preferred way to create a stream from a string is via the StringReader class. 
StringBuilder A mutable sequence of characters. 
StringBuilderPrinter Implementation of a Printer that sends its output to a StringBuilder
StringCharacterIterator StringCharacterIterator implements the CharacterIterator protocol for a String
StringIndexOutOfBoundsException Thrown by String methods to indicate that an index is either negative or greater than the size of the string. 
StringJoiner StringJoiner is used to construct a sequence of characters separated by a delimiter and optionally starting with a supplied prefix and ending with a supplied suffix. 
StringPrepParseException Exception that signals an error has occurred while parsing the input to StringPrep or IDNA. 
StringReader A character stream whose source is a string. 
StringSearch StringSearch is a SearchIterator that provides language-sensitive text searching based on the comparison rules defined in a RuleBasedCollator object. 
StringTokenizer The string tokenizer class allows an application to break a string into tokens. 
StringWriter A character stream that collects its output in a string buffer, which can then be used to construct a string. 
StrongBoxUnavailableException Indicates that an operation could not be performed because the requested security hardware is not available. 
Struct

The standard mapping in the Java programming language for an SQL structured type. 

StructCmsghdr Corresponds to C's struct cmsghdr
StructMsghdr Corresponds to C's struct msghdr 
StructPollfd Used as an in/out parameter to Os#poll
StructStat File information returned by Os#fstat, Os#lstat, and Os#stat
StructStatVfs File information returned by Os#fstatvfs and Os#statvfs
StructTimespec Corresponds to C's struct timespec from <time.h>
StructTimeval Corresponds to C's struct timeval from sys/time.h
StructUtsname Information returned by Os#uname
StyleSpan Span that allows setting the style of the text it's attached to. 
Subject

A Subject represents a grouping of related information for a single entity, such as a person. 

SubjectDomainCombiner Legacy security code; do not use. 
SubMenu Subclass of Menu for sub menus. 
SubmissionPublisher<T> A Flow.Publisher that asynchronously issues submitted (non-null) items to current subscribers until it is closed. 
SubscribeConfig Defines the configuration of an Aware subscribe session. 
SubscribeConfig.Builder Builder used to build SubscribeConfig objects. 
SubscribeDiscoverySession A class representing a Aware subscribe session. 
SubscriptionInfo A Parcelable class for Subscription Information. 
SubscriptionManager Subscription manager provides the mobile subscription information. 
SubscriptionManager.OnOpportunisticSubscriptionsChangedListener A listener class for monitoring changes to SubscriptionInfo records of opportunistic subscriptions. 
SubscriptionManager.OnSubscriptionsChangedListener A listener class for monitoring changes to SubscriptionInfo records. 
SubscriptionPlan Description of a billing relationship plan between a carrier and a specific subscriber. 
SubscriptionPlan.Builder Builder for a SubscriptionPlan
SubscriptSpan The span that moves the position of the text baseline lower. 
SubtitleData Class encapsulating subtitle data, as received through the MediaPlayer.OnSubtitleDataListener interface. 
SuggestionRangeSpan A SuggestionRangeSpan is used to show which part of an EditText is affected by a suggestion popup window. 
SuggestionsInfo This class contains a metadata of suggestions from the text service 
SuggestionSpan Holds suggestion candidates for the text enclosed in this span. 
SumPathEffect  
SuperscriptSpan The span that moves the position of the text baseline higher. 
SupplicantState From defs.h in wpa_supplicant
Supplier<T> Represents a supplier of results. 
Suppress This @interface was deprecated in API level 24. Use Suppress instead. New tests should be written using the Android Testing Support Library. 
SuppressLint Indicates that Lint should ignore the specified warnings for the annotated element. 
SuppressWarnings Indicates that the named compiler warnings should be suppressed in the annotated element (and in all program elements contained in the annotated element). 
Surface Handle onto a raw buffer that is being managed by the screen compositor. 
Surface.OutOfResourcesException Exception thrown when a Canvas couldn't be locked with Surface#lockCanvas, or when a SurfaceTexture could not successfully be allocated. 
SurfaceControl Handle to an on-screen Surface managed by the system compositor. 
SurfaceControl.Builder Builder class for SurfaceControl objects. 
SurfaceControl.Transaction An atomic set of changes to a set of SurfaceControl. 
SurfaceControl.TransactionCommittedListener Interface to handle request to SurfaceControl.Transaction#addTransactionCommittedListener(Executor, TransactionCommittedListener) 
SurfaceControl.TransactionStats Transaction stats given to the listener registered in SurfaceControl.Transaction#addTransactionCompletedListener 
SurfaceControl.TrustedPresentationThresholds This class was deprecated in API level 35. Use TrustedPresentationThresholds instead. 
SurfaceControlInputReceiver Provides a mechanism for a SurfaceControl to receive input events. 
SurfaceControlViewHost Utility class for adding a View hierarchy to a SurfaceControl
SurfaceControlViewHost.SurfacePackage Package encapsulating a Surface hierarchy which contains interactive view elements. 
SurfaceHolder Abstract interface to someone holding a display surface. 
SurfaceHolder.BadSurfaceTypeException Exception that is thrown from SurfaceHolder.lockCanvas() when called on a Surface whose type is SURFACE_TYPE_PUSH_BUFFERS. 
SurfaceHolder.Callback A client may implement this interface to receive information about changes to the surface. 
SurfaceHolder.Callback2 Additional callbacks that can be received for Callback
SurfacePackageToken An opaque reference to content that can be displayed in a SurfaceView
SurfaceSyncGroup A way for data to be gathered so multiple surfaces can be synced. 
SurfaceTexture Captures frames from an image stream as an OpenGL ES texture. 
SurfaceTexture.OnFrameAvailableListener Callback interface for being notified that a new stream frame is available. 
SurfaceTexture.OutOfResourcesException This class was deprecated in API level 19. No longer thrown. Surface.OutOfResourcesException is used instead. 
SurfaceView Provides a dedicated drawing surface embedded inside of a view hierarchy. 
SurroundingText Information about the surrounding text around the cursor for use by an input method. 
SweepGradient  
Switch A Switch is a two-state toggle widget. 
SwitchPreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
SymbolTable An interface that defines both lookup protocol and parsing of symbolic names. 
SyncAdapterType Value type that represents a SyncAdapterType. 
SyncBaseInstrumentation This class was deprecated in API level 24. Use InstrumentationRegistry instead. New tests should be written using the Android Testing Support Library. 
SyncContext  
SyncFailedException Signals that a sync operation has failed. 
SyncFence A SyncFence represents a synchronization primitive which signals when hardware units have completed work on a particular resource. 
SynchronousQueue<E> A blocking queue in which each insert operation must wait for a corresponding remove operation by another thread, and vice versa. 
SyncInfo Information about the sync operation that is currently underway. 
SyncNotedAppOp Description of an app-op that was noted for the current process. 
SyncParams Structure for common A/V sync params. 
SyncRequest Convenience class to construct sync requests. 
SyncRequest.Builder Builder class for a SyncRequest
SyncResult This class is used to communicate the results of a sync operation to the SyncManager. 
SyncStateContract The ContentProvider contract for associating data with ana data array account. 
SyncStateContract.Columns  
SyncStateContract.Constants  
SyncStateContract.Helpers  
SyncStats Used to record various statistics about the result of a sync operation. 
SyncStatusObserver  
SynthesisCallback A callback to return speech data synthesized by a text to speech engine. 
SynthesisRequest Contains data required by engines to synthesize speech. 
System The System class contains several useful class fields and methods. 
SystemCleaner Java.lang.ref.Cleaner encourages each library to create a Cleaner, with an associated thread, to process Cleaner Runnables for that library's registered cleaning actions. 
SystemClock Core timekeeping facilities. 
SystemFonts Provides the system font configurations. 
SystemHealthManager Provides access to data about how various system resources are used by applications. 
SystemUpdateInfo A class containing information about a pending system update. 
SystemUpdatePolicy Determines when over-the-air system updates are installed on a device. 
SystemUpdatePolicy.ValidationFailedException An exception class that represents various validation errors thrown from SystemUpdatePolicy#setFreezePeriods and DevicePolicyManager#setSystemUpdatePolicy 

T

TabActivity This class was deprecated in API level 13. New applications should use Fragments instead of this class; to continue to run on older devices, you can use the v4 support library which provides a version of the Fragment API that is compatible down to Build.VERSION_CODES.DONUT. 
TabHost This class was deprecated in API level 30. new applications should use fragment APIs instead of this class: Use TabLayout and ViewPager instead. 
TabHost.OnTabChangeListener Interface definition for a callback to be invoked when tab changed 
TabHost.TabContentFactory Makes the content of a tab when it is selected. 
TabHost.TabSpec A tab has a tab indicator, content, and a tag that is used to keep track of it. 
TableLayout

A layout that arranges its children into rows and columns. 

TableLayout.LayoutParams

This set of layout parameters enforces the width of each child to be ViewGroup.LayoutParams.MATCH_PARENT and the height of each child to be ViewGroup.LayoutParams.WRAP_CONTENT, but only if the height is not specified. 

TableRequest A request for Table from broadcast signal. 
TableResponse A response for Table from broadcast signal. 
TableResponse.Builder Builder for TableResponse
TableRow

A layout that arranges its children horizontally. 

TableRow.LayoutParams

Set of layout parameters used in table rows. 

TabStopSpan Paragraph affecting span that changes the position of the tab with respect to the leading margin of the line. 
TabStopSpan.Standard The default implementation of TabStopSpan that allows setting the offset of the tab stop from the leading margin of the first line of text. 
TabWidget This class was deprecated in API level 30. new applications should use fragment APIs instead of this class: Use TabLayout and ViewPager instead. 
Tag Represents an NFC tag that has been discovered. 
TagLostException  
TagTechnology TagTechnology is an interface to a technology in a Tag
TaiwanCalendar TaiwanCalendar is a subclass of GregorianCalendar that numbers years since 1912. 
Target Indicates the contexts in which an annotation interface is applicable. 
TargetApi Indicates that Lint should treat this type as targeting a given API level, no matter what the project target is. 
TargetUser Class representing the target user of a policy set by an admin (set from DevicePolicyManager), this is passed in to PolicyUpdateReceiver#onPolicySetResult and PolicyUpdateReceiver#onPolicyChanged
TaskInfo Stores information about a particular Task. 
TaskStackBuilder Utility class for constructing synthetic back stacks for cross-task navigation on Android 3.0 and newer. 
TelecomManager Provides access to information about active calls and registration/call-management functionality. 
Telephony The Telephony provider contains data related to phone operation, specifically SMS and MMS messages, access to the APN list, including the MMSC to use, and the service state. 
Telephony.BaseMmsColumns Base columns for tables that contain MMSs. 
Telephony.CanonicalAddressesColumns Columns for the "canonical_addresses" table used by MMS and SMS. 
Telephony.CarrierId Contains carrier identification information for the current subscriptions. 
Telephony.Carriers Carriers class contains information about APNs, including MMSC information. 
Telephony.Mms Contains all MMS messages. 
Telephony.Mms.Addr Contains address information for an MMS message. 
Telephony.Mms.Draft Contains all MMS messages in the MMS app drafts folder. 
Telephony.Mms.Inbox Contains all MMS messages in the MMS app inbox. 
Telephony.Mms.Intents Intents class. 
Telephony.Mms.Outbox Contains all MMS messages in the MMS app outbox. 
Telephony.Mms.Part Contains message parts. 
Telephony.Mms.Rate Message send rate table. 
Telephony.Mms.Sent Contains all MMS messages in the MMS app sent folder. 
Telephony.MmsSms Contains all MMS and SMS messages. 
Telephony.MmsSms.PendingMessages Contains pending messages info. 
Telephony.ServiceStateTable Constants for interfacing with the ServiceStateProvider and the different fields of the ServiceState class accessible through the provider. 
Telephony.Sms Contains all text-based SMS messages. 
Telephony.Sms.Conversations Contains a view of SMS conversations (also referred to as threads). 
Telephony.Sms.Draft Contains all draft text-based SMS messages in the SMS app. 
Telephony.Sms.Inbox Contains all text-based SMS messages in the SMS app inbox. 
Telephony.Sms.Intents Contains constants for SMS related Intents that are broadcast. 
Telephony.Sms.Outbox Contains all pending outgoing text-based SMS messages. 
Telephony.Sms.Sent Contains all sent text-based SMS messages in the SMS app. 
Telephony.TextBasedSmsColumns Base columns for tables that contain text-based SMSs. 
Telephony.Threads Helper functions for the "threads" table used by MMS and SMS. 
Telephony.ThreadsColumns Columns for the "threads" table used by MMS and SMS. 
TelephonyCallback A callback class for monitoring changes in specific telephony states on the device, including service state, signal strength, message waiting indicator (voicemail), and others. 
TelephonyCallback.ActiveDataSubscriptionIdListener Interface for active data subscription ID listener. 
TelephonyCallback.BarringInfoListener Interface for barring information listener. 
TelephonyCallback.CallDisconnectCauseListener Interface for call disconnect cause listener. 
TelephonyCallback.CallForwardingIndicatorListener Interface for call-forwarding indicator listener. 
TelephonyCallback.CallStateListener Interface for call state listener. 
TelephonyCallback.CarrierNetworkListener Interface for carrier network listener. 
TelephonyCallback.CellInfoListener Interface for cell info listener. 
TelephonyCallback.CellLocationListener Interface for device cell location listener. 
TelephonyCallback.DataActivationStateListener Interface for SIM data activation state listener. 
TelephonyCallback.DataActivityListener Interface for data activity state listener. 
TelephonyCallback.DataConnectionStateListener Interface for data connection state listener. 
TelephonyCallback.DisplayInfoListener Interface for display info listener. 
TelephonyCallback.EmergencyNumberListListener Interface for the current emergency number list listener. 
TelephonyCallback.ImsCallDisconnectCauseListener Interface for IMS call disconnect cause listener. 
TelephonyCallback.MessageWaitingIndicatorListener Interface for message waiting indicator listener. 
TelephonyCallback.PhysicalChannelConfigListener Interface for current physical channel configuration listener. 
TelephonyCallback.PreciseDataConnectionStateListener Interface for precise data connection state listener. 
TelephonyCallback.RegistrationFailedListener Interface for registration failures listener. 
TelephonyCallback.ServiceStateListener Interface for service state listener. 
TelephonyCallback.SignalStrengthsListener Interface for network signal strengths listener. 
TelephonyCallback.UserMobileDataStateListener Interface for user mobile data state listener. 
TelephonyDisplayInfo TelephonyDisplayInfo contains telephony-related information used for display purposes only. 
TelephonyManager Provides access to information about the telephony services on the device. 
TelephonyManager.CallComposerException Exception that may be supplied to the callback in TelephonyManager.uploadCallComposerPicture(InputStream, String, Executor, OutcomeReceiver) if something goes awry. 
TelephonyManager.CellInfoCallback Callback for providing asynchronous CellInfo on request 
TelephonyManager.ModemErrorException Exception that is supplied to the callback in TelephonyManager.getNetworkSlicingConfiguration(Executor, OutcomeReceiver) if the modem returned a failure. 
TelephonyManager.NetworkSlicingException Exception that may be supplied to the callback in TelephonyManager.getNetworkSlicingConfiguration(Executor, OutcomeReceiver) if something goes awry. 
TelephonyManager.TimeoutException Exception that is supplied to the callback in TelephonyManager.getNetworkSlicingConfiguration(Executor, OutcomeReceiver) if the system timed out waiting for a response from the Radio. 
TelephonyManager.UssdResponseCallback Used to notify callers of TelephonyManager#sendUssdRequest(String, UssdResponseCallback, Handler) when the network either successfully executes a USSD request, or if there was a failure while executing the request. 
TelephonyNetworkSpecifier NetworkSpecifier object for cellular network request. 
TelephonyNetworkSpecifier.Builder Builder to create TelephonyNetworkSpecifier object. 
TelephonyScanManager Manages the radio access network scan requests and callbacks. 
TelephonyScanManager.NetworkScanCallback The caller of TelephonyManager.requestNetworkScan(android.telephony.NetworkScanRequest, java.util.concurrent.Executor, android.telephony.TelephonyScanManager.NetworkScanCallback) should implement and provide this callback so that the scan results or errors can be returned. 
Temperature Represents a unit of temperature. 
TemperatureControlTemplate A template for a temperature related Control that supports multiple modes. 
TemperatureDelta Represents a unit of temperature difference. 
Templates An object that implements this interface is the runtime representation of processed transformation instructions. 
TemplatesHandler A SAX ContentHandler that may be used to process SAX parse events (parsing transformation instructions) into a Templates object. 
Temporal Framework-level interface defining read-write access to a temporal object, such as a date, time, offset or some combination of these. 
TemporalAccessor Framework-level interface defining read-only access to a temporal object, such as a date, time, offset or some combination of these. 
TemporalAdjuster Strategy for adjusting a temporal object. 
TemporalAdjusters Common and useful TemporalAdjusters. 
TemporalAmount Framework-level interface defining an amount of time, such as "6 hours", "8 days" or "2 years and 3 months". 
TemporalField A field of date-time, such as month-of-year or minute-of-hour. 
TemporalQueries Common implementations of TemporalQuery
TemporalQuery<R> Strategy for querying a temporal object. 
TemporalUnit A unit of date-time, such as Days or Hours. 
TestAdSelectionManager TestAdSelectionManager provides APIs for apps and ad SDKs to test ad selection processes. 
TestCustomAudienceManager TestCustomAudienceManager provides APIs for app and ad-SDKs to test custom audiences. 
TestLooperManager Blocks a looper from executing any messages, and allows the holder of this object to control when and which messages get executed until it is released. 
TestMethod This class was deprecated in API level 26. New tests should be written using the Android Testing Support Library. 
TestSuiteBuilder This class was deprecated in API level 26. New tests should be written using the Android Testing Support Library. 
TestSuiteBuilder.FailedToCreateTests This class was deprecated in API level 26. New tests should be written using the Android Testing Support Library. 
TestSuiteProvider This interface was deprecated in API level 24. Use AndroidJUnitRunner instead. New tests should be written using the Android Testing Support Library. 
TestTarget This @interface was deprecated in API level 14. Obsolete. 
TestTargetClass This @interface was deprecated in API level 14. Obsolete. 
Text The Text interface inherits from CharacterData and represents the textual content (termed character data in XML) of an Element or Attr
TextAppearanceInfo Information about text appearance in an editor, passed through CursorAnchorInfo for use by InputMethodService
TextAppearanceInfo.Builder Builder for TextAppearanceInfo
TextAppearanceSpan Sets the text appearance using the given TextAppearance attributes. 
TextAttribute The data class that IME can take extra information to applications when setting the text. 
TextAttribute The TextAttribute class defines attribute keys and attribute values used for text rendering. 
TextAttribute.Builder Builder for creating a TextAttribute
TextBoundsInfo The text bounds information of a slice of text in the editor. 
TextBoundsInfo.Builder The builder class to create a TextBoundsInfo object. 
TextBoundsInfoResult The object that holds the result of the InputConnection#requestTextBoundsInfo(RectF, Executor, Consumer) call. 
TextClassification Information for generating a widget to handle classified text. 
TextClassification.Builder Builder for building TextClassification objects. 
TextClassification.Request A request object for generating TextClassification. 
TextClassification.Request.Builder A builder for building TextClassification requests. 
TextClassificationContext A representation of the context in which text classification would be performed. 
TextClassificationContext.Builder A builder for building a TextClassification context. 
TextClassificationManager Interface to the text classification service. 
TextClassificationSessionFactory An interface for creating a session-aware TextClassifier. 
TextClassificationSessionId This class represents the id of a text classification session. 
TextClassifier Interface for providing text classification related features. 
TextClassifier.EntityConfig Configuration object for specifying what entity types to identify. 
TextClassifier.EntityConfig.Builder Builder class to construct the EntityConfig object. 
TextClassifierEvent This class represents events that are sent by components to the TextClassifier to report something of note that relates to a feature powered by the TextClassifier. 
TextClassifierEvent.Builder<T extends Builder<T>> Builder to build a text classifier event. 
TextClassifierEvent.ConversationActionsEvent This class represents events that are related to the conversation actions feature. 
TextClassifierEvent.ConversationActionsEvent.Builder Builder class for ConversationActionsEvent
TextClassifierEvent.LanguageDetectionEvent This class represents events that are related to the language detection feature. 
TextClassifierEvent.LanguageDetectionEvent.Builder Builder class for LanguageDetectionEvent
TextClassifierEvent.TextLinkifyEvent This class represents events that are related to the smart linkify feature. 
TextClassifierEvent.TextLinkifyEvent.Builder Builder class for TextLinkifyEvent
TextClassifierEvent.TextSelectionEvent This class represents events that are related to the smart text selection feature. 
TextClassifierEvent.TextSelectionEvent.Builder Builder class for TextSelectionEvent
TextClock

TextClock can display the current date and/or time as a formatted string. 

TextDirectionHeuristic Interface for objects that use a heuristic for guessing at the paragraph direction by examining text. 
TextDirectionHeuristics Some objects that implement TextDirectionHeuristic
TextElementListener Listens for the beginning and ending of text elements. 
TextInfo This class contains a metadata of the input of TextService 
TextKeyListener This is the key listener for typing normal text. 
TextKeyListener.Capitalize  
TextLanguage Represents the result of language detection of a piece of text. 
TextLanguage.Builder Builder used to build TextLanguage objects. 
TextLanguage.Request A request object for detecting the language of a piece of text. 
TextLanguage.Request.Builder A builder for building TextLanguage requests. 
TextLinks A collection of links, representing subsequences of text and the entity types (phone number, address, url, etc) they may be. 
TextLinks.Builder A builder to construct a TextLinks instance. 
TextLinks.Request A request object for generating TextLinks. 
TextLinks.Request.Builder A builder for building TextLinks requests. 
TextLinks.TextLink A link, identifying a substring of text and possible entity types for it. 
TextLinks.TextLinkSpan A ClickableSpan for a TextLink. 
TextPaint TextPaint is an extension of Paint that leaves room for some extra data used during text measuring and drawing. 
TextRunShaper Provides conversion from a text into glyph array. 
TextSelection Information about where text selection should be. 
TextSelection.Builder Builder used to build TextSelection objects. 
TextSelection.Request A request object for generating TextSelection. 
TextSelection.Request.Builder A builder for building TextSelection requests. 
TextServicesManager System API to the overall text services, which arbitrates interaction between applications and text services. 
TextShaper Provides text shaping for multi-styled text. 
TextShaper.GlyphsConsumer A consumer interface for accepting text shape result. 
TextSnapshot An immutable data snapshot of text editing state. 
TextStyle Enumeration of the style of text formatting and parsing. 
TextSwitcher Specialized ViewSwitcher that contains only children of type TextView
TextToSpeech Synthesizes speech from text for immediate playback or to create a sound file. 
TextToSpeech.Engine Constants and parameter names for controlling text-to-speech. 
TextToSpeech.EngineInfo Information about an installed text-to-speech engine. 
TextToSpeech.OnInitListener Interface definition of a callback to be invoked indicating the completion of the TextToSpeech engine initialization. 
TextToSpeech.OnUtteranceCompletedListener This interface was deprecated in API level 18. Use UtteranceProgressListener instead. 
TextToSpeechService Abstract base class for TTS engine implementations. 
TextureView

A TextureView can be used to display a content stream, such as that coming from a camera preview, a video, or an OpenGL scene. 

TextureView.SurfaceTextureListener This listener can be used to be notified when the surface texture associated with this texture view is available. 
TextUtils  
TextUtils.EllipsizeCallback  
TextUtils.SimpleStringSplitter A simple string splitter. 
TextUtils.StringSplitter An interface for splitting strings according to rules that are opaque to the user of this interface. 
TextUtils.TruncateAt  
TextValueSanitizer Sanitizes a text AutofillValue using a regular expression (regex) substitution. 
TextView A user interface element that displays text to the user. 
TextView.BufferType Type of the text buffer that defines the characteristics of the text such as static, styleable, or editable. 
TextView.OnEditorActionListener Interface definition for a callback to be invoked when an action is performed on the editor. 
TextView.SavedState User interface state that is stored by TextView for implementing View#onSaveInstanceState
TextWatcher When an object of this type is attached to an Editable, its methods will be called when the text is changed. 
ThaiBuddhistChronology The Thai Buddhist calendar system. 
ThaiBuddhistDate A date in the Thai Buddhist calendar system. 
ThaiBuddhistEra An era in the Thai Buddhist calendar system. 
ThemedSpinnerAdapter An extension of SpinnerAdapter that is capable of inflating drop-down views against a different theme than normal views. 
Thread A thread is a thread of execution in a program. 
Thread.State A thread state. 
Thread.UncaughtExceptionHandler Interface for handlers invoked when a Thread abruptly terminates due to an uncaught exception. 
ThreadDeath An instance of ThreadDeath is thrown in the victim thread when the (deprecated) Thread#stop() method is invoked. 
ThreadFactory An object that creates new threads on demand. 
ThreadGroup A thread group represents a set of threads. 
ThreadLocal<T> This class provides thread-local variables. 
ThreadLocalRandom A random number generator (with period 264) isolated to the current thread. 
ThreadPoolExecutor An ExecutorService that executes each submitted task using one of possibly several pooled threads, normally configured using Executors factory methods. 
ThreadPoolExecutor.AbortPolicy A handler for rejected tasks that throws a RejectedExecutionException
ThreadPoolExecutor.CallerRunsPolicy A handler for rejected tasks that runs the rejected task directly in the calling thread of the execute method, unless the executor has been shut down, in which case the task is discarded. 
ThreadPoolExecutor.DiscardOldestPolicy A handler for rejected tasks that discards the oldest unhandled request and then retries execute, unless the executor is shut down, in which case the task is discarded. 
ThreadPoolExecutor.DiscardPolicy A handler for rejected tasks that silently discards the rejected task. 
Throwable The Throwable class is the superclass of all errors and exceptions in the Java language. 
ThumbnailTemplate A template for a Control that displays an image. 
ThumbnailUtils Utilities for generating visual thumbnails from files. 
Tile A Tile holds the state of a tile that will be displayed in Quick Settings. 
TileService A TileService provides the user a tile that can be added to Quick Settings. 
Time This class was deprecated in API level 22. Use GregorianCalendar instead. 
Time

A thin wrapper around the java.util.Date class that allows the JDBC API to identify this as an SQL TIME value. 

TimeAnimator This class provides a simple callback mechanism to listeners that is synchronized with all other animators in the system. 
TimeAnimator.TimeListener Implementors of this interface can set themselves as update listeners to a TimeAnimator instance to receive callbacks on every animation frame to receive the total time since the animator started and the delta time since the last frame. 
TimedMetaData Class that embodies one timed metadata access unit, including
  • a time stamp, and
  • raw uninterpreted byte-array extracted directly from the container. 
TimedText Class to hold the timed text's metadata, including:
  • The characters for rendering
  • The rendering position for the timed text

To render the timed text, applications need to do the following:

 
TimeFormatException  
TimeInstantRangeFilter Specification of time range for read and delete requests. 
TimeInstantRangeFilter.Builder Builder class for TimeInstantRangeFilter 
TimeInterpolator A time interpolator defines the rate of change of an animation. 
TimeKeyListener For entering times in a text field. 
TimelineRequest A request for Timeline from broadcast signal. 
TimelineResponse A response for Timeline from broadcast signal. 
TimeoutException Exception thrown when a blocking operation times out. 
TimePicker A widget for selecting the time of day, in either 24-hour or AM/PM mode. 
TimePicker.OnTimeChangedListener The callback interface used to indicate the time has been adjusted. 
TimePickerDialog A dialog that prompts the user for the time of day using a TimePicker
TimePickerDialog.OnTimeSetListener The callback interface used to indicate the user is done filling in the time (e.g. they clicked on the 'OK' button). 
Timer A facility for threads to schedule tasks for future execution in a background thread. 
TimeRangeFilter A Base class to represent a request for time range for read and delete requests. 
TimerStat A TimerStat object stores a count and a time. 
TimerTask A task that can be scheduled for one-time or repeated execution by a Timer
Timestamp This class encapsulates information about a signed timestamp. 
Timestamp

A thin wrapper around java.util.Date that allows the JDBC API to identify this as an SQL TIMESTAMP value. 

TimeUnit Measurement unit for time units. 
TimeUnit A TimeUnit represents time durations at a given unit of granularity and provides utility methods to convert across units, and to perform timing and delay operations in these units. 
TimeUtils A class containing utility methods related to time zones. 
TimeZone [icu enhancement] ICU's replacement for TimeZone. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
TimeZone TimeZone represents a time zone offset, and also figures out daylight savings. 
TimeZone.SystemTimeZoneType [icu] System time zone type constants used by filtering zones in TimeZone#getAvailableIDs(SystemTimeZoneType, String, Integer) 
TimeZoneFormat TimeZoneFormat supports time zone display name formatting and parsing. 
TimeZoneFormat.GMTOffsetPatternType Offset pattern type enum. 
TimeZoneFormat.ParseOption Parse option enum, used for specifying optional parse behavior. 
TimeZoneFormat.Style Time zone display format style enum used by format/parse APIs in TimeZoneFormat
TimeZoneFormat.TimeType Time type enum used for receiving time type (standard time, daylight time or unknown) in TimeZoneFormat APIs. 
TimeZoneNames TimeZoneNames is an abstract class representing the time zone display name data model defined by UTS#35 Unicode Locale Data Markup Language (LDML)
TimeZoneNames.NameType Time zone display name types 
TimingLogger This class was deprecated in API level 30. Use Trace, or Android Studio. In general, milliseconds is the wrong granularity for method-level tracing. Rounding errors can overemphasize cheap operations, or underemphasize repeated operations. This timing system also does not take CPU scheduling or frequency into account. 
Toast A toast is a view containing a quick little message for the user. The toast class helps you create and show those.  
Toast.Callback Callback object to be called when the toast is shown or hidden. 
ToDoubleBiFunction<T, U> Represents a function that accepts two arguments and produces a double-valued result. 
ToDoubleFunction<T> Represents a function that produces a double-valued result. 
ToggleButton Displays checked/unchecked states as a button with a "light" indicator and by default accompanied with the text "ON" or "OFF". 
ToggleRangeTemplate A template for a Control supporting toggling and a range. 
ToggleTemplate A template for a Control with a single button that can be toggled between two states. 
ToIntBiFunction<T, U> Represents a function that accepts two arguments and produces an int-valued result. 
ToIntFunction<T> Represents a function that produces an int-valued result. 
TokenWatcher A TokenWatcher watches a collection of IBinders. 
ToLongBiFunction<T, U> Represents a function that accepts two arguments and produces a long-valued result. 
ToLongFunction<T> Represents a function that produces a long-valued result. 
ToneGenerator This class provides methods to play DTMF tones (ITU-T Recommendation Q.23), call supervisory tones (3GPP TS 22.001, CEPT) and proprietary tones (3GPP TS 31.111). 
TonemapCurve Immutable class for describing a 2 x M x 3 tonemap curve of floats. 
Toolbar A standard toolbar for use within application content. 
Toolbar.LayoutParams Layout information for child views of Toolbars. 
Toolbar.OnMenuItemClickListener Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners. 
TooManyListenersException

The TooManyListenersException Exception is used as part of the Java Event model to annotate and implement a unicast special case of a multicast Event Source. 

Topic Represent the topic result from the getTopics API. 
TopicsManager TopicsManager provides APIs for App and Ad-Sdks to get the user interest topics in a privacy preserving way. 
TotalCaloriesBurnedRecord Total energy burned by the user in Energy, including active & basal energy burned (BMR). 
TotalCaloriesBurnedRecord.Builder Builder class for TotalCaloriesBurnedRecord 
TotalCaptureResult

The total assembled results of a single image capture from the image sensor. 

Touch  
TouchDelegate Helper class to handle situations where you want a view to have a larger touch area than its actual view bounds. 
TouchInteractionController This class allows a service to handle touch exploration and the detection of specialized accessibility gestures. 
TouchInteractionController.Callback callbacks allow services to receive motion events and state change updates. 
TouchUtils This class was deprecated in API level 24. Use Espresso UI testing framework instead. New tests should be written using the Android Testing Support Library. 
Trace Writes trace events to the system trace buffer. 
TracingConfig Holds tracing configuration information and predefined settings. 
TracingConfig.Builder Builder used to create TracingConfig objects. 
TracingController Manages tracing of WebViews. 
TrackChangeEvent Playback track change event. 
TrackChangeEvent.Builder A builder for TrackChangeEvent 
TrafficDescriptor A traffic descriptor, as defined in 3GPP TS 24.526 Section 5.2. 
TrafficDescriptor.Builder Provides a convenient way to set the fields of a TrafficDescriptor when creating a new instance. 
TrafficStats Class that provides network traffic statistics. 
TrainingExampleRecord One record of TrainingExamplesOutput
TrainingExampleRecord.Builder A builder for TrainingExampleRecord 
TrainingExamplesInput The input data for IsolatedWorker#onTrainingExamples
TrainingExamplesOutput The output data of IsolatedWorker#onTrainingExamples 
TrainingExamplesOutput.Builder A builder for TrainingExamplesOutput 
TrainingInterval Training interval settings required for federated computation jobs. 
TrainingInterval.Builder A builder for TrainingInterval 
TransactionTooLargeException The Binder transaction failed because it was too large. 
TranscodingSession An instances of this class represents a session of media Transcoding. 
TransferQueue<E> A BlockingQueue in which producers may wait for consumers to receive elements. 
Transformation Helper class used to change a child view of a presentation template at runtime, using the values of fields contained in the screen. 
Transformation Defines the transformation to be applied at one point in time of an Animation. 
TransformationMethod TextView uses TransformationMethods to do things like replacing the characters of passwords with dots, or keeping the newline characters from causing line breaks in single-line text fields. 
Transformer An instance of this abstract class can transform a source tree into a result tree. 
TransformerConfigurationException Indicates a serious configuration error. 
TransformerException This class specifies an exceptional condition that occurred during the transformation process. 
TransformerFactory

A TransformerFactory instance can be used to create Transformer and Templates objects. 

TransformerFactoryConfigurationError Thrown when a problem with configuration with the Transformer Factories exists. 
TransformerHandler A TransformerHandler listens for SAX ContentHandler parse events and transforms them to a Result. 
Transition A Transition holds information about animations that will be run on its targets during a scene change. 
Transition.EpicenterCallback Class to get the epicenter of Transition. 
Transition.TransitionListener A transition listener receives notifications from a transition. 
TransitionDrawable An extension of LayerDrawables that is intended to cross-fade between the first and second layer. 
TransitionInflater This class inflates scenes and transitions from resource files. 
TransitionListenerAdapter This adapter class provides empty implementations of the methods from Transition.TransitionListener
TransitionManager This class manages the set of transitions that fire when there is a change of Scene
TransitionPropagation Extend TransitionPropagation to customize start delays for Animators created in Transition.createAnimator(ViewGroup, TransitionValues, TransitionValues)
TransitionSet A TransitionSet is a parent of child transitions (including other TransitionSets). 
TransitionValues Data structure which holds cached values for the transition. 
TranslateAnimation An animation that controls the position of an object. 
TranslationCapability Capability class holding information for a pair of TranslationSpecs. 
TranslationContext Info class holding information for Translators and used by TranslationManager#createOnDeviceTranslator(TranslationContext, Executor, Consumer)
TranslationContext.Builder A builder for TranslationContext 
TranslationManager The TranslationManager class provides ways for apps to integrate and use the translation framework. 
TranslationRequest Translation request sent to the translation service by the Translator which contains the text to be translated. 
TranslationRequest.Builder A builder for TranslationRequest 
TranslationRequestValue A value to be translated via Translator
TranslationResponse Response from the translation service, which contains the translated result. 
TranslationResponse.Builder A builder for TranslationResponse 
TranslationResponseValue A translated response value from translation service. 
TranslationResponseValue.Builder A builder for TranslationResponseValue 
TranslationSpec Specs and additional info for the translation data. 
Translator The Translator for translation, defined by a TranslationContext
Transliterator Transliterator is an abstract class that transliterates text from one format to another. 
Transliterator.Position Position structure for incremental transliteration. 
TransportBlock Wrapper for Transport Discovery Data Transport Blocks. 
TransportDiscoveryData Wrapper for Transport Discovery Data AD Type. 
TransportInfo A container for transport-specific capabilities which is returned by NetworkCapabilities#getTransportInfo()
TransportModeChildSessionParams TransportModeChildSessionParams represents proposed configurations for negotiating a transport mode Child Session. 
TransportModeChildSessionParams.Builder This class can be used to incrementally construct a TransportModeChildSessionParams
TreeMap<K, V> A Red-Black tree based NavigableMap implementation. 
TreeSet<E> A NavigableSet implementation based on a TreeMap
TriggerEvent This class represents a Trigger Event - the event associated with a Trigger Sensor. 
TriggerEventListener This class is the listener used to handle Trigger Sensors. 
TrustAnchor A trust anchor or most-trusted Certification Authority (CA). 
TrustedBiddingData Represents data used during the ad selection process to fetch buyer bidding signals from a trusted key/value server. 
TrustedBiddingData.Builder Builder for TrustedBiddingData objects. 
TrustedPresentationThresholds Threshold values that are sent with WindowManager.registerTrustedPresentationListener(IBinder, TrustedPresentationThresholds, Executor, Consumer) 
TrustManager This is the base interface for JSSE trust managers. 
TrustManagerFactory This class acts as a factory for trust managers based on a source of trust material. 
TrustManagerFactorySpi This class defines the Service Provider Interface (SPI) for the TrustManagerFactory class. 
TsRequest A request for TS (transport stream) from broadcast signal. 
TsResponse A response for TS (transport stream) from broadcast signal. 
TtsSpan A span that supplies additional meta-data for the associated text intended for text-to-speech engines. 
TtsSpan.Builder<C extends Builder<?>> A simple builder for TtsSpans. 
TtsSpan.CardinalBuilder A builder for TtsSpans of type TtsSpan.TYPE_CARDINAL
TtsSpan.DateBuilder A builder for TtsSpans of type TtsSpan.TYPE_DATE
TtsSpan.DecimalBuilder A builder for TtsSpans of type TtsSpan.TYPE_DECIMAL
TtsSpan.DigitsBuilder A builder for TtsSpans of type TtsSpan.TYPE_DIGITS
TtsSpan.ElectronicBuilder A builder for TtsSpans of type TtsSpan.TYPE_ELECTRONIC
TtsSpan.FractionBuilder A builder for TtsSpans of type TtsSpan.TYPE_FRACTION
TtsSpan.MeasureBuilder A builder for TtsSpans of type TtsSpan.TYPE_MEASURE
TtsSpan.MoneyBuilder A builder for TtsSpans of type TtsSpan.TYPE_MONEY
TtsSpan.OrdinalBuilder A builder for TtsSpans of type TtsSpan.TYPE_ORDINAL
TtsSpan.SemioticClassBuilder<C extends SemioticClassBuilder<?>> A builder for TtsSpans, has setters for morphosyntactic features. 
TtsSpan.TelephoneBuilder A builder for TtsSpans of type TtsSpan.TYPE_TELEPHONE
TtsSpan.TextBuilder A builder for TtsSpans of type TtsSpan.TYPE_TEXT
TtsSpan.TimeBuilder A builder for TtsSpans of type TtsSpan.TYPE_TIME
TtsSpan.VerbatimBuilder A builder for TtsSpans of type TtsSpan.TYPE_VERBATIM
TunnelModeChildSessionParams TunnelModeChildSessionParams represents proposed configurations for negotiating a tunnel mode Child Session. 
TunnelModeChildSessionParams.Builder This class can be used to incrementally construct a TunnelModeChildSessionParams
TunnelModeChildSessionParams.ConfigRequestIpv4Address Represents an IPv4 Internal Address request 
TunnelModeChildSessionParams.ConfigRequestIpv4DhcpServer Represents an IPv4 DHCP server request 
TunnelModeChildSessionParams.ConfigRequestIpv4DnsServer Represents an IPv4 DNS Server request 
TunnelModeChildSessionParams.ConfigRequestIpv4Netmask Represents an IPv4 Netmask request 
TunnelModeChildSessionParams.ConfigRequestIpv6Address Represents an IPv6 Internal Address request 
TunnelModeChildSessionParams.ConfigRequestIpv6DnsServer Represents an IPv6 DNS Server request 
TunnelModeChildSessionParams.TunnelModeChildConfigRequest Represents a tunnel mode child session configuration request type 
TvContentRating A class representing a TV content rating. 
TvContract The contract between the TV provider and applications. 
TvContract.BaseTvColumns Common base for the tables of TV channels/programs. 
TvContract.Channels Column definitions for the TV channels table. 
TvContract.Channels.Logo A sub-directory of a single TV channel that represents its primary logo. 
TvContract.PreviewPrograms Column definitions for the preview TV programs table. 
TvContract.Programs Column definitions for the TV programs table. 
TvContract.Programs.Genres Canonical genres for TV programs. 
TvContract.RecordedPrograms Column definitions for the recorded TV programs table. 
TvContract.WatchNextPrograms Column definitions for the "watch next" TV programs table. 
TvInputInfo This class is used to specify meta information of a TV input. 
TvInputInfo.Builder A convenience builder for creating TvInputInfo objects. 
TvInputManager Central system API to the overall TV input framework (TIF) architecture, which arbitrates interaction between applications and the selected TV inputs. 
TvInputManager.TvInputCallback Callback used to monitor status of the TV inputs. 
TvInputService The TvInputService class represents a TV input or source such as HDMI or built-in tuner which provides pass-through video or broadcast TV programs. 
TvInputService.HardwareSession Base class for a TV input session which represents an external device connected to a hardware TV input. 
TvInputService.RecordingSession Base class for derived classes to implement to provide a TV input recording session. 
TvInputService.Session Base class for derived classes to implement to provide a TV input session. 
TvInteractiveAppManager Central system API to the overall TV interactive application framework (TIAF) architecture, which arbitrates interaction between Android applications and TV interactive apps. 
TvInteractiveAppManager.TvInteractiveAppCallback Callback used to monitor status of the TV Interactive App. 
TvInteractiveAppService A TV interactive application service is a service that provides runtime environment and runs TV interactive applications. 
TvInteractiveAppService.Session Base class for derived classes to implement to provide a TV interactive app session. 
TvInteractiveAppServiceInfo This class is used to specify meta information of a TV interactive app. 
TvInteractiveAppView Displays contents of interactive TV applications. 
TvInteractiveAppView.OnUnhandledInputEventListener Interface definition for a callback to be invoked when the unhandled input event is received. 
TvInteractiveAppView.TvInteractiveAppCallback Callback used to receive various status updates on the TvInteractiveAppView
TvRecordingClient The public interface object used to interact with a specific TV input service for TV program recording. 
TvRecordingClient.RecordingCallback Callback used to receive various status updates on the TvInputService.RecordingSession 
TvRecordingInfo This class is used to describe the meta information for a TV recording. 
TvTrackInfo Encapsulates the format of tracks played in TvInputService
TvTrackInfo.Builder A builder class for creating TvTrackInfo objects. 
TvView Displays TV contents. 
TvView.OnUnhandledInputEventListener Interface definition for a callback to be invoked when the unhandled input event is received. 
TvView.TimeShiftPositionCallback Callback used to receive time shift position changes. 
TvView.TvInputCallback Callback used to receive various status updates on the TvView
TwoLineListItem This class was deprecated in API level 17. This class can be implemented easily by apps using a RelativeLayout or a LinearLayout. 
TwoStatePreference This class was deprecated in API level 29. Use the AndroidX Preference Library for consistent behavior across all devices. For more information on using the AndroidX Preference Library see Settings. 
Type This class was deprecated in API level 31. Renderscript has been deprecated in API level 31. Please refer to the migration guide for the proposed alternatives. 
Type Type is the common superinterface for all types in the Java programming language. 
Type.Builder Builder class for Type. 
Type.CubemapFace  
TypeConverter<T, V> Abstract base class used convert type T to another type V. 
TypedArray Container for an array of values that were retrieved with Resources.Theme#obtainStyledAttributes(AttributeSet, int[], int, int) or Resources#obtainAttributes
TypeDescriptor An entity that has a type descriptor. 
TypeDescriptor.OfField<F extends OfField<F>> An entity that has a field type descriptor. 
TypeDescriptor.OfMethod<F extends OfField<F>, M extends OfMethod<F, M>> An entity that has a method type descriptor Method descriptors conforming to JVMS {@jvms 4.3.3} can be described 
TypedValue Container for a dynamically typed data value. 
TypeEvaluator<T> Interface for use with the ValueAnimator#setEvaluator(TypeEvaluator) function. 
Typeface The Typeface class specifies the typeface and intrinsic style of a font. 
Typeface.Builder A builder class for creating new Typeface instance. 
Typeface.CustomFallbackBuilder A builder class for creating new Typeface instance. 
TypefaceSpan Span that updates the typeface of the text it's attached to. 
TypeInfo The TypeInfo interface represents a type referenced from Element or Attr nodes, specified in the schemas associated with the document. 
TypeInfoProvider This class provides access to the type information determined by ValidatorHandler
TypeNotPresentException Thrown when an application tries to access a type using a string representing the type's name, but no definition for the type with the specified name can be found. 
Types

The class that defines the constants that are used to identify generic SQL types, called JDBC types. 

TypeVariable<D extends GenericDeclaration> TypeVariable is the common superinterface for type variables of kinds. 

U

UCharacter [icu enhancement] ICU's replacement for Character. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
UCharacter.BidiPairedBracketType Bidi Paired Bracket Type constants. 
UCharacter.DecompositionType Decomposition Type constants. 
UCharacter.EastAsianWidth East Asian Width constants. 
UCharacter.GraphemeClusterBreak Grapheme Cluster Break constants. 
UCharacter.HangulSyllableType Hangul Syllable Type constants. 
UCharacter.IndicPositionalCategory Indic Positional Category constants. 
UCharacter.IndicSyllabicCategory Indic Syllabic Category constants. 
UCharacter.JoiningGroup Joining Group constants. 
UCharacter.JoiningType Joining Type constants. 
UCharacter.LineBreak Line Break constants. 
UCharacter.NumericType Numeric Type constants. 
UCharacter.SentenceBreak Sentence Break constants. 
UCharacter.UnicodeBlock [icu enhancement] ICU's replacement for Character.UnicodeBlock. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
UCharacter.VerticalOrientation Vertical Orientation constants. 
UCharacter.WordBreak Word Break constants. 
UCharacterCategory Enumerated Unicode category types from the UnicodeData.txt file. 
UCharacterDirection Enumerated Unicode character linguistic direction constants. 
UCharacterEnums A container for the different 'enumerated types' used by UCharacter. 
UCharacterEnums.ECharacterCategory 'Enum' for the CharacterCategory constants. 
UCharacterEnums.ECharacterDirection 'Enum' for the CharacterDirection constants. 
UCharacterIterator Abstract class that defines an API for iteration on text objects.This is an interface for forward and backward iteration and random access into a text object. 
UFormat An abstract class that extends Format to provide additional ICU protocol, specifically, the getLocale() API. 
UiAutomation Class for interacting with the device's UI by simulation user actions and introspection of the screen content. 
UiAutomation.AccessibilityEventFilter Listener for filtering accessibility events. 
UiAutomation.OnAccessibilityEventListener Listener for observing the AccessibilityEvent stream. 
UiccCardInfo The UiccCardInfo represents information about a currently inserted UICC or embedded eUICC. 
UiccPortInfo UiccPortInfo class represents information about a single port contained on UiccCardInfo
UidHealthStats Keys for HealthStats returned from SystemHealthManager.takeUidSnapshot(int), SystemHealthManager.takeMyUidSnapshot(), and SystemHealthManager.takeUidSnapshots(int[])
UiModeManager This class provides access to the system uimode services. 
UiModeManager.ContrastChangeListener Listener for the UI contrast. 
UiThreadTest This @interface was deprecated in API level 24. Use UiThreadTest instead. New tests should be written using the Android Testing Support Library. 
UiTranslationManager

The UiTranslationManager class provides ways for apps to use the ui translation function in framework. 

UiTranslationStateCallback Callback for listening to UI Translation state changes. 
ULocale [icu enhancement] ICU's replacement for Locale. Methods, fields, and other functionality specific to ICU are labeled '[icu]'. 
ULocale.AvailableType Types for ULocale#getAvailableLocalesByType 
ULocale.Builder Builder is used to build instances of ULocale from values configured by the setters. 
ULocale.Category Enum for locale categories. 
UnaryOperator<T> Represents an operation on a single operand that produces a result of the same type as its operand. 
UnbufferedIoViolation See #Builder#detectUnbufferedIo() 
UncheckedIOException Wraps an IOException with an unchecked exception. 
UndeclaredThrowableException Thrown by a method invocation on a proxy instance if its invocation handler's invoke method throws a checked exception (a Throwable that is not assignable to RuntimeException or Error) that is not assignable to any of the exception types declared in the throws clause of the method that was invoked on the proxy instance and dispatched to the invocation handler. 
UnderlineSpan A span that underlines the text it's attached to. 
UnicodeFilter UnicodeFilter defines a protocol for selecting a subset of the full range (U+0000 to U+FFFF) of Unicode characters. 
UnicodeMatcher UnicodeMatcher defines a protocol for objects that can match a range of characters in a Replaceable string. 
UnicodeSet A mutable set of Unicode characters and multicharacter strings. 
UnicodeSet.ComparisonStyle Comparison style enums used by UnicodeSet#compareTo(UnicodeSet, ComparisonStyle)
UnicodeSet.EntryRange A struct-like class used for iteration through ranges, for faster iteration than by String. 
UnicodeSet.SpanCondition Argument values for whether span() and similar functions continue while the current character is contained vs. 
UnicodeSetIterator UnicodeSetIterator iterates over the contents of a UnicodeSet. 
UnicodeSetSpanner A helper class used to count, replace, and trim CharSequences based on UnicodeSet matches. 
UnicodeSetSpanner.CountMethod Options for replaceFrom and countIn to control how to treat each matched span. 
UnicodeSetSpanner.TrimOption Options for the trim() method 
UnitTestSuiteBuilder This class is deprecated. android.test.runner is obsolete 
UniversalTimeScale There are quite a few different conventions for binary datetime, depending on different platforms and protocols. 
UnknownAuthenticationKeyException Thrown if trying to certify an unknown dynamic authentication key. 
UnknownError Thrown when an unknown but serious exception has occurred in the Java Virtual Machine. 
UnknownFormatConversionException Unchecked exception thrown when an unknown conversion is given. 
UnknownFormatFlagsException Unchecked exception thrown when an unknown flag is given. 
UnknownHostException Thrown to indicate that the IP address of a host could not be determined. 
UnknownServiceException Thrown to indicate that an unknown service exception has occurred. 
UnlocalizedNumberFormatter A NumberFormatter that does not yet have a locale. 
UnlocalizedNumberRangeFormatter A NumberRangeFormatter that does not yet have a locale. 
UnmappableCharacterException Checked exception thrown when an input character (or byte) sequence is valid but cannot be mapped to an output byte (or character) sequence. 
UnrecoverableEntryException This exception is thrown if an entry in the keystore cannot be recovered. 
UnrecoverableKeyException This exception is thrown if a key in the keystore cannot be recovered. 
UnregisterCredentialDescriptionRequest A request to unregister a ComponentName that contains an actively provisioned Credential represented by a CredentialDescription
UnresolvedAddressException Unchecked exception thrown when an attempt is made to invoke a network operation upon an unresolved socket address. 
UnresolvedPermission Legacy security code; do not use. 
UnsafeIntentLaunchViolation Violation raised when your app launches an Intent which originated from outside your app. 
UnsafeStateException Exception thrown when a DevicePolicyManager operation failed because it was not safe to be executed at that moment. 
UnsatisfiedLinkError Thrown if the Java Virtual Machine cannot find an appropriate native-language definition of a method declared native
UnsupportedAddressTypeException Unchecked exception thrown when an attempt is made to bind or connect to a socket address of a type that is not supported. 
UnsupportedCallbackException Signals that a CallbackHandler does not recognize a particular Callback
UnsupportedCharsetException Unchecked exception thrown when no support is available for a requested charset. 
UnsupportedClassVersionError Thrown when the Java Virtual Machine attempts to read a class file and determines that the major and minor version numbers in the file are not supported. 
UnsupportedEncodingException The Character Encoding is not supported. 
UnsupportedOperationException Thrown to indicate that the requested operation is not supported. 
UnsupportedSchemeException Exception thrown when an attempt is made to construct a MediaDrm object using a crypto scheme UUID that is not supported by the device 
UnsupportedTemporalTypeException UnsupportedTemporalTypeException indicates that a ChronoField or ChronoUnit is not supported for a Temporal class. 
UntaggedSocketViolation  
UpdateAdCounterHistogramRequest Request object wrapping the required arguments needed to update an ad counter histogram. 
UpdateAdCounterHistogramRequest.Builder Builder for UpdateAdCounterHistogramRequest objects. 
UpdateAppearance The classes that affect character-level text in a way that modifies their appearance when one is added or removed must implement this interface. 
UpdateLayout The classes that affect character-level text formatting in a way that triggers a text layout update when one is added or removed must implement this interface. 
UpdateSignalsRequest The request object for updateSignals. 
UpdateSignalsRequest.Builder Builder for UpdateSignalsRequest objects. 
UploadDataProvider Abstract class allowing the embedder to provide an upload body to UrlRequest
UploadDataSink Defines callbacks methods for UploadDataProvider
UProperty

Selection constants for Unicode properties. 

UProperty.NameChoice Selector constants for UCharacter.getPropertyName() and UCharacter.getPropertyValueName(). 
Uri Immutable URI reference. 
URI Represents a Uniform Resource Identifier (URI) reference. 
Uri.Builder Helper class for building or manipulating URI references. 
URICertStoreParameters Parameters used as input for CertStore algorithms which use information contained in a URI to retrieve certificates and CRLs. 
UriMatcher Utility class to aid in matching URIs in content providers. 
UriPermission Description of a single Uri permission grant. 
UriRelativeFilter A filter for matching Intent URI Data as part of a UriRelativeFilterGroup
UriRelativeFilterGroup An intent data matching group based on a URI's relative reference which includes the path, query and fragment. 
URIResolver

An object that implements this interface that can be called by the processor to turn a URI used in document(), xsl:import, or xsl:include into a Source object. 

URISyntaxException Checked exception thrown to indicate that a string could not be parsed as a URI reference. 
URL Class URL represents a Uniform Resource Locator, a pointer to a "resource" on the World Wide Web. 
URLClassLoader This class loader is used to load classes and resources from a search path of URLs referring to both JAR files and directories. 
URLConnection The abstract class URLConnection is the superclass of all classes that represent a communications link between the application and a URL. 
URLDecoder Utility class for HTML form decoding. 
URLEncoder Utility class for HTML form encoding. 
UrlQuerySanitizer Sanitizes the Query portion of a URL. 
UrlQuerySanitizer.IllegalCharacterValueSanitizer Sanitize values based on which characters they contain. 
UrlQuerySanitizer.ParameterValuePair A simple tuple that holds parameter-value pairs. 
UrlQuerySanitizer.ValueSanitizer A functor used to sanitize a single query value. 
UrlRequest Controls an HTTP request (GET, PUT, POST etc). 
UrlRequest.Builder Builder for UrlRequests. 
UrlRequest.Callback Users of the HTTP stack extend this class to receive callbacks indicating the progress of a UrlRequest being processed. 
UrlRequest.Status Request status values returned by UrlRequest.getStatus(StatusListener)
UrlRequest.StatusListener Listener interface used with UrlRequest.getStatus(StatusListener) to receive the status of a UrlRequest
UrlResponseInfo Basic information about a response. 
URLSpan Implementation of the ClickableSpan that allows setting a url string. 
URLStreamHandler The abstract class URLStreamHandler is the common superclass for all stream protocol handlers. 
URLStreamHandlerFactory This interface defines a factory for URL stream protocol handlers. 
URLUtil  
UrspRule Represents a single URSP rule as defined in 3GPP TS 24.526. 
UsageEvents A result returned from UsageStatsManager.queryEvents(long, long) from which to read UsageEvents.Event objects. 
UsageEvents.Event An event representing a state change for a component. 
UsageEventsQuery An Object-Oriented representation for a UsageEvents query. 
UsageEventsQuery.Builder Builder for UsageEventsQuery. 
UsageStats Contains usage statistics for an app package for a specific time range. 
UsageStatsManager Provides access to device usage history and statistics. 
UsbAccessory A class representing a USB accessory, which is an external hardware component that communicates with an android application over USB. 
UsbConfiguration A class representing a configuration on a UsbDevice
UsbConstants Contains constants for the USB protocol. 
UsbDevice This class represents a USB device attached to the android device with the android device acting as the USB host. 
UsbDeviceConnection This class is used for sending and receiving data and control messages to a USB device. 
UsbEndpoint A class representing an endpoint on a UsbInterface
UsbInterface A class representing an interface on a UsbDevice
UsbManager This class allows you to access the state of USB and communicate with USB devices. 
UsbRequest A class representing USB request packet. 
UScript Constants for ISO 15924 script codes, and related functions. 
UScript.ScriptUsage Script usage constants. 
UserData User data provided by the platform to an IsolatedService
UserData Defines the user data used for field classification
UserData.Builder A builder for UserData objects. 
UserDataHandler When associating an object to a key on a node using Node.setUserData() the application can provide a handler that gets called when the node the object is associated to is being cloned, imported, or renamed. 
UserDefinedFileAttributeView A file attribute view that provides a view of a file's user-defined attributes, sometimes known as extended attributes
UserDictionary A provider of user defined words for input methods to use for predictive text input. 
UserDictionary.Words Contains the user defined words. 
UserHandle Representation of a user on the device. 
UserManager Manages users and user details on a multi-user system. 
UserManager.UserOperationException Thrown to indicate user operation failed. 
UserNotAuthenticatedException Indicates that a cryptographic operation could not be performed because the user has not been authenticated recently enough. 
UserPresenceUnavailableException Indicates the condition that a proof of user-presence was requested but this proof was not presented. 
UserPrincipal A Principal representing an identity used to determine access rights to objects in a file system. 
UserPrincipalLookupService An object to lookup user and group principals by name. 
UserPrincipalNotFoundException Checked exception thrown when a lookup of UserPrincipal fails because the principal does not exist. 
UTFDataFormatException Signals that a malformed string in modified UTF-8 format has been read in a data input stream or by any class that implements the data input interface. 
UtteranceProgressListener Listener for events relating to the progress of an utterance through the synthesis queue. 
UUID A class that represents an immutable universally unique identifier (UUID). 

V

Validator Class used to define whether a condition is satisfied. 
Validator

A processor that checks an XML document against Schema

ValidatorHandler Streaming validator that works on SAX stream. 
Validators Factory for Validator operations. 
ValueAnimator This class provides a simple timing engine for running animations which calculate animated values and set them on target objects. 
ValueAnimator.AnimatorUpdateListener Implementors of this interface can add themselves as update listeners to an ValueAnimator instance to receive callbacks on every animation frame, after the current frame's values have been calculated for that ValueAnimator
ValueAnimator.DurationScaleChangeListener Listener interface for the system-wide scaling factor for Animator-based animations. 
ValueCallback<T> A callback interface used to provide values asynchronously. 
ValueIterator

Interface for enabling iteration over sets of <int, Object>, where int is the sorted integer index in ascending order, and Object its associated value. 

ValueIterator.Element

The return result container of each iteration. 

ValueRange The range of valid values for a date-time field. 
VarHandle A VarHandle is a dynamically strongly typed reference to a variable, or to a parametrically-defined family of variables, including static fields, non-static fields, array elements, or components of an off-heap data structure. 
VarHandle.AccessMode The set of access modes that specify how a variable, referenced by a VarHandle, is accessed. 
VcnCellUnderlyingNetworkTemplate This class represents a configuration for a network template class of underlying cellular networks. 
VcnCellUnderlyingNetworkTemplate.Builder This class is used to incrementally build VcnCellUnderlyingNetworkTemplate objects. 
VcnConfig This class represents a configuration for a Virtual Carrier Network. 
VcnConfig.Builder This class is used to incrementally build VcnConfig objects. 
VcnGatewayConnectionConfig This class represents a configuration for a connection to a Virtual Carrier Network gateway. 
VcnGatewayConnectionConfig.Builder This class is used to incrementally build VcnGatewayConnectionConfig objects. 
VcnManager VcnManager publishes APIs for applications to configure and manage Virtual Carrier Networks. 
VcnManager.VcnStatusCallback VcnStatusCallback is the interface for Carrier apps to receive updates for their VCNs. 
VcnUnderlyingNetworkTemplate This class represents a template containing set of underlying network requirements for doing route selection. 
VcnWifiUnderlyingNetworkTemplate This class represents a configuration for a network template class of underlying Carrier WiFi networks. 
VcnWifiUnderlyingNetworkTemplate.Builder This class is used to incrementally build VcnWifiUnderlyingNetworkTemplate objects. 
Vector<E> The Vector class implements a growable array of objects. 
VectorDrawable This lets you create a drawable based on an XML vector graphic. 
Velocity Represents a unit of speed. 
VelocityTracker Helper for tracking the velocity of motion events, for implementing flinging and other such gestures. 
VerifiedDisplayHash The verified display hash used to validate information about what was present on screen. 
VerifiedInputEvent Base class for verified events. 
VerifiedKeyEvent KeyEvent that has been verified by the system. 
VerifiedMotionEvent MotionEvent that has been verified by the system. 
VerifyError Thrown when the "verifier" detects that a class file, though well formed, contains some sort of internal inconsistency or security problem. 
VersionedPackage Encapsulates a package and its version code. 
VersionInfo Class to store version numbers of the form major.minor.milli.micro. 
VibrationAttributes Encapsulates a collection of attributes describing information about a vibration. 
VibrationAttributes.Builder Builder class for VibrationAttributes objects. 
VibrationEffect A VibrationEffect describes a haptic effect to be performed by a Vibrator
VibrationEffect.Composition A composition of haptic elements that are combined to be playable as a single VibrationEffect
Vibrator Class that operates the vibrator on the device. 
VibratorManager Provides access to all vibrators from the device, as well as the ability to run them in a synchronized fashion. 
VideoProfile Represents attributes of video calls. 
VideoProfile.CameraCapabilities Represents the camera capabilities important to a Video Telephony provider. 
VideoView Displays a video file. 
View

This class represents the basic building block for user interface components. 

View.AccessibilityDelegate

This class represents a delegate that can be registered in a View to enhance accessibility support via composition rather via inheritance. 

View.BaseSavedState Base class for derived classes that want to save and restore their own state in View.onSaveInstanceState()
View.DragShadowBuilder Creates an image that the system displays during the drag and drop operation. 
View.MeasureSpec A MeasureSpec encapsulates the layout requirements passed from parent to child. 
View.OnApplyWindowInsetsListener Listener for applying window insets on a view in a custom way. 
View.OnAttachStateChangeListener Interface definition for a callback to be invoked when this view is attached or detached from its window. 
View.OnCapturedPointerListener Interface definition for a callback to be invoked when a captured pointer event is being dispatched this view. 
View.OnClickListener Interface definition for a callback to be invoked when a view is clicked. 
View.OnContextClickListener Interface definition for a callback to be invoked when a view is context clicked. 
View.OnCreateContextMenuListener Interface definition for a callback to be invoked when the context menu for this view is being built. 
View.OnDragListener Interface definition for a listener that's invoked when a drag event is dispatched to this view. 
View.OnFocusChangeListener Interface definition for a callback to be invoked when the focus state of a view changed. 
View.OnGenericMotionListener Interface definition for a callback to be invoked when a generic motion event is dispatched to this view. 
View.OnHoverListener Interface definition for a callback to be invoked when a hover event is dispatched to this view. 
View.OnKeyListener Interface definition for a callback to be invoked when a hardware key event is dispatched to this view. 
View.OnLayoutChangeListener Interface definition for a callback to be invoked when the layout bounds of a view changes due to layout processing. 
View.OnLongClickListener Interface definition for a callback to be invoked when a view has been clicked and held. 
View.OnScrollChangeListener Interface definition for a callback to be invoked when the scroll X or Y positions of a view change. 
View.OnSystemUiVisibilityChangeListener This interface was deprecated in API level 30. Use WindowInsets#isVisible(int) to find out about system bar visibilities by setting a OnApplyWindowInsetsListener on this view. 
View.OnTouchListener Interface definition for a callback to be invoked when a touch event is dispatched to this view. 
View.OnUnhandledKeyEventListener Interface definition for a callback to be invoked when a hardware key event hasn't been handled by the view hierarchy. 
ViewAnimationUtils Defines common utilities for working with View's animations. 
ViewAnimator Base class for a FrameLayout container that will perform animations when switching between its views. 
ViewAsserts This class was deprecated in API level 24. Use Espresso View Matchers instead. New test should be written using the Android Testing Support Library. For more information about UI testing, take the Espresso UI testing training. 
ViewConfiguration Contains methods to standard constants used in the UI for timeouts, sizes, and distances. 
ViewDebug Various debugging/tracing tools related to View and the view hierarchy. 
ViewDebug.CapturedViewProperty This annotation can be used to mark fields and methods to be dumped when the view is captured. 
ViewDebug.ExportedProperty This annotation can be used to mark fields and methods to be dumped by the view server. 
ViewDebug.FlagToString Defines a mapping from a flag to a String. 
ViewDebug.HierarchyTraceType This enum was deprecated in API level 16. This enum is now unused 
ViewDebug.IntToString Defines a mapping from an int value to a String. 
ViewDebug.RecyclerTraceType This enum was deprecated in API level 16. This enum is now unused 
ViewFlipper Simple ViewAnimator that will animate between two or more views that have been added to it. 
ViewGroup

A ViewGroup is a special view that can contain other views (called children.) The view group is the base class for layouts and views containers. 

ViewGroup.LayoutParams LayoutParams are used by views to tell their parents how they want to be laid out. 
ViewGroup.MarginLayoutParams Per-child layout information for layouts that support margins. 
ViewGroup.OnHierarchyChangeListener Interface definition for a callback to be invoked when the hierarchy within this view changed. 
ViewGroupOverlay A group overlay is an extra layer that sits on top of a ViewGroup (the "host view") which is drawn after all other content in that view (including the view group's children). 
ViewManager Interface to let you add and remove child views to an Activity. 
ViewOutlineProvider Interface by which a View builds its Outline, used for shadow casting and clipping. 
ViewOverlay An overlay is an extra layer that sits on top of a View (the "host view") which is drawn after all other content in that view (including children, if the view is a ViewGroup). 
ViewParent Defines the responsibilities for a class that will be a parent of a View. 
ViewPropertyAnimator This class enables automatic and optimized animation of select properties on View objects. 
ViewStructure

ViewStructure is a container for storing additional per-view data generated by View.onProvideStructure and View.onProvideAutofillStructure

ViewStructure.HtmlInfo Simplified representation of the HTML properties of a node that represents an HTML element. 
ViewStructure.HtmlInfo.Builder Builder for HtmlInfo objects. 
ViewStub A ViewStub is an invisible, zero-sized View that can be used to lazily inflate layout resources at runtime. 
ViewStub.OnInflateListener Listener used to receive a notification after a ViewStub has successfully inflated its layout resource. 
ViewSwitcher ViewAnimator that switches between two views, and has a factory from which these views are created. 
ViewSwitcher.ViewFactory Creates views in a ViewSwitcher. 
ViewTranslationCallback

Callback for handling the translated information show or hide in the View

ViewTranslationRequest Wrapper class representing a translation request associated with a View to be used by translation service. 
ViewTranslationRequest.Builder A builder for building ViewTranslationRequest. 
ViewTranslationResponse Wrapper class representing a translation response associated with a View to be used by translation service. 
ViewTranslationResponse.Builder A builder for ViewTranslationResponse 
ViewTreeObserver A view tree observer is used to register listeners that can be notified of global changes in the view tree. 
ViewTreeObserver.OnDrawListener Interface definition for a callback to be invoked when the view tree is about to be drawn. 
ViewTreeObserver.OnGlobalFocusChangeListener Interface definition for a callback to be invoked when the focus state within the view tree changes. 
ViewTreeObserver.OnGlobalLayoutListener Interface definition for a callback to be invoked when the global layout state or the visibility of views within the view tree changes. 
ViewTreeObserver.OnPreDrawListener Interface definition for a callback to be invoked when the view tree is about to be drawn. 
ViewTreeObserver.OnScrollChangedListener Interface definition for a callback to be invoked when something in the view tree has been scrolled. 
ViewTreeObserver.OnTouchModeChangeListener Interface definition for a callback to be invoked when the touch mode changes. 
ViewTreeObserver.OnWindowAttachListener Interface definition for a callback to be invoked when the view hierarchy is attached to and detached from its window. 
ViewTreeObserver.OnWindowFocusChangeListener Interface definition for a callback to be invoked when the view hierarchy's window focus state changes. 
ViewTreeObserver.OnWindowVisibilityChangeListener Interface definition for a callback to be invoked when the view hierarchy's window visibility changes. 
Violation Root class for all StrictMode violations. 
VirtualDevice Details of a particular virtual device. 
VirtualDeviceManager System level service for creation and management of virtual devices. 
VirtualDeviceManager.VirtualDeviceListener Listener for changes in the available virtual devices. 
VirtualDisplay Represents a virtual display. 
VirtualDisplay.Callback Interface for receiving information about a VirtualDisplay's state changes. 
VirtualDisplayConfig Holds configuration used to create VirtualDisplay instances. 
VirtualDisplayConfig.Builder A builder for VirtualDisplayConfig
Virtualizer This class was deprecated in API level 35. use the Spatializer class to query the capabilities of the platform with regards to spatialization, a different name for audio channel virtualization, and the AudioAttributes.Builder.setSpatializationBehavior(int) to characterize how you want your content to be played when spatialization is supported. 
Virtualizer.OnParameterChangeListener The OnParameterChangeListener interface defines a method called by the Virtualizer when a parameter value has changed. 
Virtualizer.Settings The Settings class regroups all virtualizer parameters. 
VirtualMachineError Thrown to indicate that the Java Virtual Machine is broken or has run out of resources necessary for it to continue operating. 
VirtualViewFillInfo Information for the virtual view to the autofill framework. 
VirtualViewFillInfo.Builder A builder for VirtualViewFillInfo 
Visibility A collection of utility methods for computing the visibility of triangle meshes. 
Visibility This transition tracks changes to the visibility of target views in the start and end scenes. 
VisibilityPropagation Base class for TransitionPropagations that care about View Visibility and the center position of the View. 
VisibilitySetterAction Action used to change the visibility of other child view in a CustomDescription presentation template
VisibilitySetterAction.Builder Builder for VisibilitySetterAction objects. 
VisibleActivityInfo The class is used to represent a visible activity information. 
Visualizer The Visualizer class enables application to retrieve part of the currently playing audio for visualization purpose. 
Visualizer.MeasurementPeakRms A class to store peak and RMS values. 
Visualizer.OnDataCaptureListener The OnDataCaptureListener interface defines methods called by the Visualizer to periodically update the audio visualization capture. 
VisualVoicemailService This service is implemented by dialer apps that wishes to handle OMTP or similar visual voicemails. 
VisualVoicemailService.VisualVoicemailTask Represents a visual voicemail event which needs to be handled. 
VisualVoicemailSms Represents the content of a visual voicemail SMS. 
VisualVoicemailSmsFilterSettings Class to represent various settings for the visual voicemail SMS filter. 
VisualVoicemailSmsFilterSettings.Builder Builder class for VisualVoicemailSmsFilterSettings objects. 
VmSocketAddress A virtio-vsock address VmSocketAddress
Vo2MaxRecord Capture user's VO2 max score and optionally the measurement method. 
Vo2MaxRecord.Builder Builder class for Vo2MaxRecord 
Vo2MaxRecord.Vo2MaxMeasurementMethod Identifier for V02 max measurement method 
Voice Characteristics and features of a Text-To-Speech Voice. 
VoiceInteractionService Top-level service of the current global voice interactor, which is providing support for hotwording, the back-end of a VoiceInteractor, etc. 
VoiceInteractionSession An active voice interaction session, providing a facility for the implementation to interact with the user in the voice interaction layer. 
VoiceInteractionSession.AbortVoiceRequest A request to report that the current user interaction can not be completed with voice, as per VoiceInteractor.AbortVoiceRequest
VoiceInteractionSession.ActivityId Represents the id of an assist source activity. 
VoiceInteractionSession.AssistState Represents assist state captured when this session was started. 
VoiceInteractionSession.CommandRequest A generic vendor-specific request, as per VoiceInteractor.CommandRequest
VoiceInteractionSession.CompleteVoiceRequest A request to simply inform the user that the voice operation has completed, as per VoiceInteractor.CompleteVoiceRequest
VoiceInteractionSession.ConfirmationRequest A request for confirmation from the user of an operation, as per VoiceInteractor.ConfirmationRequest
VoiceInteractionSession.Insets Information about where interesting parts of the input method UI appear. 
VoiceInteractionSession.PickOptionRequest A request for the user to pick from a set of option, as per VoiceInteractor.PickOptionRequest
VoiceInteractionSession.Request Base class representing a request from a voice-driver app to perform a particular voice operation with the user. 
VoiceInteractionSession.VisibleActivityCallback Callback interface for receiving visible activity changes used for assistant usage. 
VoiceInteractionSessionService An active voice interaction session, initiated by a VoiceInteractionService
VoiceInteractor Interface for an Activity to interact with the user through voice. 
VoiceInteractor.AbortVoiceRequest Reports that the current interaction can not be complete with voice, so the application will need to switch to a traditional input UI. 
VoiceInteractor.CommandRequest Execute a vendor-specific command using the trusted system VoiceInteractionService. 
VoiceInteractor.CompleteVoiceRequest Reports that the current interaction was successfully completed with voice, so the application can report the final status to the user. 
VoiceInteractor.ConfirmationRequest Confirms an operation with the user via the trusted system VoiceInteractionService. 
VoiceInteractor.PickOptionRequest Select a single option from multiple potential options with the user via the trusted system VoiceInteractionService. 
VoiceInteractor.PickOptionRequest.Option Represents a single option that the user may select using their voice. 
VoiceInteractor.Prompt A set of voice prompts to use with the voice interaction system to confirm an action, select an option, or do similar operations. 
VoiceInteractor.Request Base class for voice interaction requests that can be submitted to the interactor. 
VoicemailContract The contract between the voicemail provider and applications. 
VoicemailContract.Status Defines fields exposed through the /status path of this content provider. 
VoicemailContract.Voicemails Defines fields exposed through the /voicemail path of this content provider. 
Void The Void class is an uninstantiable placeholder class to hold a reference to the Class object representing the Java keyword void. 
VolatileCallSite A VolatileCallSite is a CallSite whose target acts like a volatile variable. 
Volume Represents a unit of volume. 
VolumeAutomation VolumeAutomation defines an interface for automatic volume control of AudioTrack and MediaPlayer objects. 
VolumeProvider Handles requests to adjust or set the volume on a session. 
VolumeShaper The VolumeShaper class is used to automatically control audio volume during media playback, allowing simple implementation of transition effects and ducking. 
VolumeShaper.Configuration The VolumeShaper.Configuration class contains curve and duration information. 
VolumeShaper.Configuration.Builder Builder class for a VolumeShaper.Configuration object. 
VolumeShaper.Operation The VolumeShaper.Operation class is used to specify operations to the VolumeShaper that affect the volume change. 
VpnManager This class provides an interface for apps to manage platform VPN profiles

Apps can use this API to provide profiles with which the platform can set up a VPN without further app intermediation. 

VpnProfileState Describe the state of VPN. 
VpnService VpnService is a base class for applications to extend and build their own VPN solutions. 
VpnService.Builder Helper class to create a VPN interface. 
VrListenerService A service that is bound from the system while running in virtual reality (VR) mode. 

W

WalletCard A WalletCard can represent anything that a user might carry in their wallet -- a credit card, library card, transit pass, etc. 
WalletCard.Builder Builder for WalletCard objects. 
WalletServiceEvent Represents a request from the wallet app to the Quick Access Wallet in System UI. 
WallpaperColors Provides information about the colors of a wallpaper. 
WallpaperInfo This class is used to specify meta information of a wallpaper service. 
WallpaperManager Provides access to the system wallpaper. 
WallpaperManager.OnColorsChangedListener Interface definition for a callback to be invoked when colors change on a wallpaper. 
WallpaperService A wallpaper service is responsible for showing a live wallpaper behind applications that would like to sit on top of it. 
WallpaperService.Engine The actual implementation of a wallpaper. 
Watchable An object that may be registered with a watch service so that it can be watched for changes and events. 
WatchEvent<T> An event or a repeated event for an object that is registered with a WatchService
WatchEvent.Kind<T> An event kind, for the purposes of identification. 
WatchEvent.Modifier An event modifier that qualifies how a Watchable is registered with a WatchService
WatchKey A token representing the registration of a watchable object with a WatchService
WatchService A watch service that watches registered objects for changes and events. 
WeakHashMap<K, V> Hash table based implementation of the Map interface, with weak keys
WeakReference<T> Weak reference objects, which do not prevent their referents from being made finalizable, finalized, and then reclaimed. 
WebBackForwardList This class contains the back/forward list for a WebView. 
WebChromeClient  
WebChromeClient.CustomViewCallback A callback interface used by the host application to notify the current page that its custom view has been dismissed. 
WebChromeClient.FileChooserParams Parameters used in the WebChromeClient.onShowFileChooser(WebView, ValueCallback, FileChooserParams) method. 
WebHistoryItem A convenience class for accessing fields in an entry in the back/forward list of a WebView. 
WebIconDatabase This class was deprecated in API level 18. This class is only required when running on devices up to Build.VERSION_CODES.JELLY_BEAN_MR2 
WebIconDatabase.IconListener This interface was deprecated in API level 18. This interface is obsolete. 
WebMessage The Java representation of the HTML5 PostMessage event. 
WebMessagePort

The Java representation of the HTML5 message ports. 

WebMessagePort.WebMessageCallback The listener for handling MessagePort events. 
WebResourceError Encapsulates information about errors that occurred during loading of web resources. 
WebResourceRequest Encompasses parameters to the WebViewClient#shouldInterceptRequest method. 
WebResourceResponse Encapsulates a resource response. 
WebSettings Manages settings state for a WebView. 
WebSettings.LayoutAlgorithm Enum for controlling the layout of html. 
WebSettings.PluginState The plugin state effects how plugins are treated on a page. 
WebSettings.RenderPriority  
WebSettings.TextSize This enum was deprecated in API level 15. Use WebSettings#setTextZoom(int) and WebSettings#getTextZoom() instead. 
WebSettings.ZoomDensity Enum for specifying the WebView's desired density. 
WebSourceParams Class holding source registration parameters. 
WebSourceParams.Builder A builder for WebSourceParams
WebSourceRegistrationRequest Class to hold input to measurement source registration calls from web context. 
WebSourceRegistrationRequest.Builder Builder for WebSourceRegistrationRequest
WebStorage This class is used to manage the JavaScript storage APIs provided by the WebView
WebStorage.Origin This class encapsulates information about the amount of storage currently used by an origin for the JavaScript storage APIs. 
WebStorage.QuotaUpdater This interface was deprecated in API level 19. This class is obsolete and no longer used. 
WebTriggerInput The input data for IsolatedWorker#onWebTrigger(WebTriggerInput, android.os.OutcomeReceiver)
WebTriggerOutput The result that should be returned by IsolatedWorker#onWebTrigger(WebTriggerInput, android.os.OutcomeReceiver)
WebTriggerOutput.Builder A builder for WebTriggerOutput 
WebTriggerParams Class holding trigger registration parameters. 
WebTriggerParams.Builder A builder for WebTriggerParams
WebTriggerRegistrationRequest Class to hold input to measurement trigger registration calls from web context. 
WebTriggerRegistrationRequest.Builder Builder for WebTriggerRegistrationRequest
WebView A View that displays web pages. 
WebView.FindListener Interface to listen for find results. 
WebView.HitTestResult  
WebView.PictureListener This interface was deprecated in API level 12. This interface is now obsolete. 
WebView.VisualStateCallback Callback interface supplied to WebView.postVisualStateCallback(long, VisualStateCallback) for receiving notifications about the visual state. 
WebView.WebViewTransport Transportation object for returning WebView across thread boundaries. 
WebViewClient  
WebViewDatabase This class allows developers to determine whether any WebView used in the application has stored any of the following types of browsing data and to clear any such stored data for all WebViews in the application. 
WebViewFragment This class was deprecated in API level 28. Manually call WebView#onPause() and WebView#onResume() 
WebViewMethodCalledOnWrongThreadViolation  
WebViewRenderProcess WebViewRenderProcess provides an opaque handle to a WebView renderer. 
WebViewRenderProcessClient Used to receive callbacks on WebView renderer events. 
WeekFields Localized definitions of the day-of-week, week-of-month and week-of-year fields. 
WeightRecord Captures the user's weight. 
WeightRecord.Builder Builder class for WeightRecord 
WheelchairPushesRecord Captures the number of wheelchair pushes done over a time interval. 
WheelchairPushesRecord.Builder Builder class for WheelchairPushesRecord 
WifiAvailableChannel Contains information about a Wifi channel and bitmask of Wifi operational modes allowed on that channel. 
WifiAwareChannelInfo Wi-Fi Aware data-path channel information. 
WifiAwareDataPathSecurityConfig Wi-Fi Aware data-path security config. 
WifiAwareDataPathSecurityConfig.Builder A builder class for a Wi-Fi Aware data-path security config to encrypt an Aware connection. 
WifiAwareManager This class provides the primary API for managing Wi-Fi Aware operations: discovery and peer-to-peer data connections. 
WifiAwareNetworkInfo Wi-Fi Aware-specific network information. 
WifiAwareNetworkSpecifier Network specifier object used to request a Wi-Fi Aware network. 
WifiAwareNetworkSpecifier.Builder A builder class for a Wi-Fi Aware network specifier to set up an Aware connection with a peer. 
WifiAwareSession This class represents a Wi-Fi Aware session - an attachment to the Wi-Fi Aware service through which the app can execute discovery operations. 
WifiConfiguration This class was deprecated in API level 29. Use WifiNetworkSpecifier.Builder to create NetworkSpecifier and WifiNetworkSuggestion.Builder to create WifiNetworkSuggestion. This class can still be used with privileged APIs such as WifiManager#addNetwork(WifiConfiguration). 
WifiConfiguration.AuthAlgorithm Recognized IEEE 802.11 authentication algorithms. 
WifiConfiguration.GroupCipher Recognized group ciphers. 
WifiConfiguration.GroupMgmtCipher Recognized group management ciphers. 
WifiConfiguration.KeyMgmt Recognized key management schemes. 
WifiConfiguration.PairwiseCipher Recognized pairwise ciphers for WPA. 
WifiConfiguration.Protocol Recognized security protocols. 
WifiConfiguration.Status Possible status of a network configuration. 
WifiDeviceFilter A filter for Wifi devices 
WifiDeviceFilter.Builder A builder for WifiDeviceFilter 
WifiEnterpriseConfig Enterprise configuration details for Wi-Fi. 
WifiEnterpriseConfig.Eap The Extensible Authentication Protocol method used 
WifiEnterpriseConfig.Phase2 The inner authentication method used 
WifiInfo Describes the state of any Wi-Fi connection that is active or is in the process of being set up. 
WifiInfo.Builder Builder for WifiInfo 
WifiManager This class provides the primary API for managing all aspects of Wi-Fi connectivity. 
WifiManager.AddNetworkResult Provides the results of a call to WifiManager.addNetworkPrivileged(android.net.wifi.WifiConfiguration) 
WifiManager.InterfaceCreationImpact Class describing an impact of interface creation - returned by WifiManager.reportCreateInterfaceImpact(int, boolean, java.util.concurrent.Executor, java.util.function.BiConsumer)
WifiManager.LocalOnlyConnectionFailureListener Interface for local-only connection failure listener. 
WifiManager.LocalOnlyHotspotCallback Callback class for applications to receive updates about the LocalOnlyHotspot status. 
WifiManager.LocalOnlyHotspotReservation LocalOnlyHotspotReservation that contains the SoftApConfiguration for the active LocalOnlyHotspot request. 
WifiManager.MulticastLock Allows an application to receive Wifi Multicast packets. 
WifiManager.ScanResultsCallback Abstract class for scan results callback. 
WifiManager.SubsystemRestartTrackingCallback Abstract callback class for applications to receive updates about the Wi-Fi subsystem restarting. 
WifiManager.SuggestionConnectionStatusListener Interface for suggestion connection status listener. 
WifiManager.SuggestionUserApprovalStatusListener Interface for network suggestion user approval status change listener. 
WifiManager.WifiLock Allows an application to keep the Wi-Fi radio awake. 
WifiManager.WpsCallback This class was deprecated in API level 28. This is deprecated 
WifiNetworkSpecifier Network specifier object used to request a Wi-Fi network. 
WifiNetworkSpecifier.Builder Builder used to create WifiNetworkSpecifier objects. 
WifiNetworkSuggestion The Network Suggestion object is used to provide a Wi-Fi network for consideration when auto-connecting to networks. 
WifiNetworkSuggestion.Builder Builder used to create WifiNetworkSuggestion objects. 
WifiP2pConfig A class representing a Wi-Fi P2p configuration for setting up a connection  
WifiP2pConfig.Builder Builder used to build WifiP2pConfig objects for creating or joining a group. 
WifiP2pDevice A class representing a Wi-Fi p2p device Note that the operations are not thread safe  
WifiP2pDeviceList A class representing a Wi-Fi P2p device list. 
WifiP2pDiscoveryConfig A class representing a Wi-Fi P2P scan configuration for setting up discovery. 
WifiP2pDiscoveryConfig.Builder Builder for WifiP2pDiscoveryConfig
WifiP2pDnsSdServiceInfo A class for storing Bonjour service information that is advertised over a Wi-Fi peer-to-peer setup. 
WifiP2pDnsSdServiceRequest A class for creating a Bonjour service discovery request for use with WifiP2pManager#addServiceRequest and WifiP2pManager#removeServiceRequest  
WifiP2pGroup A class representing a Wi-Fi P2p group. 
WifiP2pInfo A class representing connection information about a Wi-Fi p2p group  
WifiP2pManager This class provides the API for managing Wi-Fi peer-to-peer connectivity. 
WifiP2pManager.ActionListener Interface for callback invocation on an application action 
WifiP2pManager.Channel A channel that connects the application to the Wifi p2p framework. 
WifiP2pManager.ChannelListener Interface for callback invocation when framework channel is lost 
WifiP2pManager.ConnectionInfoListener Interface for callback invocation when connection info is available 
WifiP2pManager.DeviceInfoListener Interface for callback invocation when WifiP2pDevice is available in response to WifiP2pManager.requestDeviceInfo(android.net.wifi.p2p.WifiP2pManager.Channel, android.net.wifi.p2p.WifiP2pManager.DeviceInfoListener)
WifiP2pManager.DiscoveryStateListener Interface for callback invocation when p2p state is available in response to WifiP2pManager.requestDiscoveryState(Channel, DiscoveryStateListener)
WifiP2pManager.DnsSdServiceResponseListener Interface for callback invocation when Bonjour service discovery response is received 
WifiP2pManager.DnsSdTxtRecordListener Interface for callback invocation when Bonjour TXT record is available for a service 
WifiP2pManager.ExternalApproverRequestListener Interface for callback invocation when an incoming request is received. 
WifiP2pManager.GroupInfoListener Interface for callback invocation when group info is available 
WifiP2pManager.NetworkInfoListener Interface for callback invocation when NetworkInfo is available in response to WifiP2pManager.requestNetworkInfo(Channel, NetworkInfoListener)
WifiP2pManager.P2pStateListener Interface for callback invocation when p2p state is available in response to WifiP2pManager.requestP2pState(Channel, P2pStateListener)
WifiP2pManager.PeerListListener Interface for callback invocation when peer list is available 
WifiP2pManager.ServiceResponseListener Interface for callback invocation when service discovery response other than Upnp or Bonjour is received 
WifiP2pManager.UpnpServiceResponseListener Interface for callback invocation when upnp service discovery response is received 
WifiP2pManager.WifiP2pListener Interface used to listen to Wi-Fi p2p various changes such as device state change, discovery started/stopped, connection change, etc. 
WifiP2pServiceInfo A class for storing service information that is advertised over a Wi-Fi peer-to-peer setup 
WifiP2pServiceRequest A class for creating a service discovery request for use with WifiP2pManager#addServiceRequest and WifiP2pManager#removeServiceRequest

This class is used to create service discovery request for custom vendor specific service discovery protocol WifiP2pServiceInfo#SERVICE_TYPE_VENDOR_SPECIFIC or to search all service protocols WifiP2pServiceInfo#SERVICE_TYPE_ALL

WifiP2pUpnpServiceInfo A class for storing Upnp service information that is advertised over a Wi-Fi peer-to-peer setup. 
WifiP2pUpnpServiceRequest A class for creating a Upnp service discovery request for use with WifiP2pManager#addServiceRequest and WifiP2pManager#removeServiceRequest  
WifiP2pWfdInfo A class representing Wifi Display information for a device. 
WifiRttManager This class provides the primary API for measuring distance (range) to other devices using the IEEE 802.11mc Wi-Fi Round Trip Time (RTT) technology. 
WifiSsid Representation of a Wi-Fi Service Set Identifier (SSID). 
WifiSsidPolicy Used to indicate the Wi-Fi SSID restriction policy the network must satisfy in order to be eligible for a connection. 
WildcardType WildcardType represents a wildcard type expression, such as ?, ? extends Number, or ? super Integer
Window Abstract base class for a top-level window look and behavior policy. 
Window.Callback API from a Window back to its caller. 
Window.OnFrameMetricsAvailableListener Callback for clients that want frame timing information for each frame rendered by the Window. 
Window.OnRestrictedCaptionAreaChangedListener Callback for clients that want to be aware of where caption draws content. 
WindowAnimationFrameStats This class was deprecated in API level 34. Use Shared FrameTimeline jank metrics instead. 
WindowContentFrameStats This class contains window content frame statistics. 
WindowId Safe identifier for a window. 
WindowId.FocusObserver Subclass for observing changes to the focus state of an WindowId
WindowInsets Describes a set of insets for window content. 
WindowInsets.Builder Builder for WindowInsets. 
WindowInsets.Side Class that defines different sides for insets. 
WindowInsets.Type Class that defines different types of sources causing window insets. 
WindowInsetsAnimation Class representing an animation of a set of windows that cause insets. 
WindowInsetsAnimation.Bounds Class representing the range of an WindowInsetsAnimation 
WindowInsetsAnimation.Callback Interface that allows the application to listen to animation events for windows that cause insets. 
WindowInsetsAnimationController Controller for app-driven animation of system windows. 
WindowInsetsAnimationControlListener Listener that encapsulates a request to WindowInsetsController#controlWindowInsetsAnimation
WindowInsetsController Interface to control windows that generate insets. 
WindowInsetsController.OnControllableInsetsChangedListener Listener to be notified when the set of controllable WindowInsets.Type controlled by a WindowInsetsController changes. 
WindowInspector Provides access to window inspection information. 
WindowManager The interface that apps use to talk to the window manager. 
WindowManager.BadTokenException Exception that is thrown when trying to add view whose LayoutParams LayoutParams#token is invalid. 
WindowManager.InvalidDisplayException Exception that is thrown when calling ViewManager.addView(View, LayoutParams) to a secondary display that cannot be found. 
WindowManager.LayoutParams  
WindowMetrics Metrics about a Window, consisting of the bounds and WindowInsets
WordSegmentFinder Implementation of SegmentFinder using words as the text segment. 
WorkDuration WorkDuration contains the measured time in nano seconds of the workload in each component, see PerformanceHintManager.Session#reportActualWorkDuration(WorkDuration)
WorkSource Describes the source of some work that may be done by someone else. 
WpsInfo A class representing Wi-Fi Protected Setup  
WrappedKeyEntry An Entry that holds a wrapped key. 
Wrapper Interface for JDBC classes which provide the ability to retrieve the delegate instance when the instance in question is in fact a proxy class. 
WrapperListAdapter List adapter that wraps another list adapter. 
WrapTogetherSpan  
WritableByteChannel A channel that can write bytes. 
WritableIdentityCredential Class used to personalize a new identity credential. 
WriteAbortedException Signals that one of the ObjectStreamExceptions was thrown during a write operation. 
WritePendingException Unchecked exception thrown when an attempt is made to write to an asynchronous socket channel and a previous write has not completed. 
Writer Abstract class for writing to character streams. 
WrongMethodTypeException Thrown to indicate that code has attempted to call a method handle via the wrong method type. 

X

X500Principal

This class represents an X.500 Principal

X500PrivateCredential

This class represents an X500PrivateCredential

X509Certificate

Abstract class for X.509 certificates. 

X509Certificate Abstract class for X.509 v1 certificates. 
X509CertSelector A CertSelector that selects X509Certificates that match all specified criteria. 
X509CRL

Abstract class for an X.509 Certificate Revocation List (CRL). 

X509CRLEntry

Abstract class for a revoked certificate in a CRL (Certificate Revocation List). 

X509CRLSelector A CRLSelector that selects X509CRLs that match all specified criteria. 
X509EncodedKeySpec This class represents the ASN.1 encoding of a public key, encoded according to the ASN.1 type SubjectPublicKeyInfo
X509ExtendedKeyManager Abstract class that provides for extension of the X509KeyManager interface. 
X509ExtendedTrustManager Extensions to the X509TrustManager interface to support SSL/TLS connection sensitive trust management. 
X509Extension Interface for an X.509 extension. 
X509HostnameVerifier This interface was deprecated in API level 22. Please use URL.openConnection() instead. Please visit this webpage for further details. 
X509KeyManager Instances of this interface manage which X509 certificate-based key pairs are used to authenticate the local side of a secure socket. 
X509TrustManager Instance of this interface manage which X509 certificates may be used to authenticate the remote side of a secure socket. 
X509TrustManagerExtensions X509TrustManager wrapper exposing Android-added features. 
XdhKeySpec External Diffie\u2013Hellman (XDH) key spec holding either a public or private key. 
XECKey An interface for an elliptic curve public/private key as defined by RFC 7748. 
XECPrivateKey An interface for an elliptic curve private key as defined by RFC 7748. 
XECPrivateKeySpec A class representing elliptic curve private keys as defined in RFC 7748, including the curve and other algorithm parameters. 
XECPublicKey An interface for an elliptic curve public key as defined by RFC 7748. 
XECPublicKeySpec A class representing elliptic curve public keys as defined in RFC 7748, including the curve and other algorithm parameters. 
Xfermode Xfermode is the base class for objects that are called to implement custom "transfer-modes" in the drawing pipeline. 
Xml XML utility methods. 
Xml.Encoding Supported character encodings. 
XMLConstants

Utility class to contain basic XML values as constants. 

XMLFilter Interface for an XML filter. 
XMLFilterImpl Base class for deriving an XML filter. 
XMLFormatter Format a LogRecord into a standard XML format. 
XMLGregorianCalendar

Representation for W3C XML Schema 1.0 date/time datatypes. 

XmlPullParser XML Pull Parser is an interface that defines parsing functionality provided in XMLPULL V1 API (visit this website to learn more about API and its implementations). 
XmlPullParserException This exception is thrown to signal XML Pull Parser related faults. 
XmlPullParserFactory This class is used to create implementations of XML Pull Parser defined in XMPULL V1 API. 
XMLReader Interface for reading an XML document using callbacks. 
XMLReaderAdapter Adapt a SAX2 XMLReader as a SAX1 Parser. 
XMLReaderFactory Factory for creating an XML reader. 
XmlResourceParser The XML parsing interface returned for an XML resource. 
XmlSerializer Define an interface to serialization of XML Infoset. 
XPath

XPath provides access to the XPath evaluation environment and expressions. 

XPathConstants

XPath constants. 

XPathException XPathException represents a generic XPath exception. 
XPathExpression

XPathExpression provides access to compiled XPath expressions. 

XPathExpressionException XPathExpressionException represents an error in an XPath expression. 
XPathFactory

An XPathFactory instance can be used to create XPath objects. 

XPathFactoryConfigurationException XPathFactoryConfigurationException represents a configuration error in a XPathFactory environment. 
XPathFunction

XPathFunction provides access to XPath functions. 

XPathFunctionException XPathFunctionException represents an error with an XPath function. 
XPathFunctionResolver

XPathFunctionResolver provides access to the set of user defined XPathFunctions. 

XPathVariableResolver

XPathVariableResolver provides access to the set of user defined XPath variables. 

Y

Year A year in the ISO-8601 calendar system, such as 2007
YearMonth A year-month in the ISO-8601 calendar system, such as 2007-12
YuvImage YuvImage contains YUV data and provides a method that compresses a region of the YUV data to a Jpeg. 

Z

ZenDeviceEffects Represents the set of device effects (affecting display and device behavior in general) that are applied whenever an AutomaticZenRule is active. 
ZenDeviceEffects.Builder Builder class for ZenDeviceEffects objects. 
ZenPolicy ZenPolicy determines whether to allow certain notifications and their corresponding sounds to play when a device is in Do Not Disturb mode. 
ZenPolicy.Builder Builder class for ZenPolicy objects. 
ZipEntry This class is used to represent a ZIP file entry. 
ZipError Signals that an unrecoverable error has occurred. 
ZipException Signals that a Zip exception of some sort has occurred. 
ZipFile This class is used to read entries from a zip file. 
ZipInputStream This class implements an input stream filter for reading files in the ZIP file format. 
ZipOutputStream This class implements an output stream filter for writing files in the ZIP file format. 
ZipPathValidator Enables validation of zip file entry paths to prevent exploitation of the path traversal vulnerability, e.g. zip path entries containing ".." or "/". 
ZipPathValidator.Callback Interface that defines the core validation mechanism when accessing zip file entry paths. 
ZonedDateTime A date-time with a time-zone in the ISO-8601 calendar system, such as 2007-12-03T10:15:30+01:00 Europe/Paris
ZoneId A time-zone ID, such as Europe/Paris
ZoneOffset A time-zone offset from Greenwich/UTC, such as +02:00
ZoneOffsetTransition A transition between two offsets caused by a discontinuity in the local time-line. 
ZoneOffsetTransitionRule A rule expressing how to create a transition. 
ZoneOffsetTransitionRule.TimeDefinition A definition of the way a local time can be converted to the actual transition date-time. 
ZoneRules The rules defining how the zone offset varies for a single time-zone. 
ZoneRulesException Thrown to indicate a problem with time-zone configuration. 
ZoomButton This class was deprecated in API level 26. Use other means to handle this functionality. This widget is merely a simple wrapper around a long-press handler. 
ZoomButtonsController This class was deprecated in API level 26. This functionality and UI is better handled with custom views and layouts rather than a dedicated zoom-control widget 
ZoomButtonsController.OnZoomListener Interface that will be called when the user performs an interaction that triggers some action, for example zooming. 
ZoomControls This class was deprecated in API level 29. This functionality and UI is better handled with custom views and layouts rather than a dedicated zoom-control widget 
ZygotePreload This is the interface to be implemented for the class that is specified by the android:zygotePreloadName of the <application> tag.