Class Index

Kotlin |Java

These are all the API classes. See all API packages.

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A

AbsSavedState	A Parcelable implementation that should be used by inheritance hierarchies to ensure the state of all classes along the chain is saved.
AbstractDetailsDescriptionPresenter	An abstract Presenter for rendering a detailed description of an item.
AbstractDetailsDescriptionPresenter.ViewHolder	The ViewHolder for the AbstractDetailsDescriptionPresenter.
AbstractMediaItemPresenter	Abstract Presenter class for rendering media items in a playlist format.
AbstractMediaItemPresenter.ViewHolder	The ViewHolder for the AbstractMediaItemPresenter.
AbstractMediaListHeaderPresenter	Abstract presenter class for rendering the header for a list of media items in a playlist.
AbstractMediaListHeaderPresenter.ViewHolder	The ViewHolder for the AbstractMediaListHeaderPresenter.
AbstractProgressFragment	The base class for Fragments that handle dynamic feature installation.
AbstractSavedStateViewModelFactory	Skeleton of androidx.
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.
AccessibilityClickableSpanCompat	ClickableSpan cannot be parceled, but accessibility services need to be able to cause their callback handlers to be called.
AccessibilityDelegateCompat	Helper for accessing AccessibilityDelegate.
AccessibilityEventCompat	Helper for accessing features in AccessibilityEvent.
AccessibilityManagerCompat	Helper for accessing features in AccessibilityManager.
AccessibilityManagerCompat.AccessibilityStateChangeListener	Listener for the accessibility state.
AccessibilityManagerCompat.AccessibilityStateChangeListenerCompat	Listener for the accessibility state.
AccessibilityManagerCompat.TouchExplorationStateChangeListener	Listener for the system touch exploration state.
AccessibilityNodeInfoCompat	Helper for accessing android.view.accessibility.AccessibilityNodeInfo in a backwards compatible fashion.
AccessibilityNodeInfoCompat.AccessibilityActionCompat	A class defining an action that can be performed on an AccessibilityNodeInfo.
AccessibilityNodeInfoCompat.CollectionInfoCompat	Class with information if a node is a collection.
AccessibilityNodeInfoCompat.CollectionItemInfoCompat	Class with information if a node is a collection item.
AccessibilityNodeInfoCompat.RangeInfoCompat	Class with information if a node is a range.
AccessibilityNodeInfoCompat.TouchDelegateInfoCompat	Class with information of touch delegated views and regions.
AccessibilityNodeProviderCompat	Helper for accessing android.view.accessibility.AccessibilityNodeProvider.
AccessibilityRecordCompat	Helper for accessing AccessibilityRecord.
AccessibilityServiceInfoCompat	Helper for accessing features in AccessibilityServiceInfo.
AccessibilityViewCommand	Functional interface used to create a custom accessibility action.
AccessibilityViewCommand.CommandArguments	Object containing arguments passed into an AccessibilityViewCommand
AccessibilityViewCommand.MoveAtGranularityArguments	Arguments for #ACTION_NEXT_AT_MOVEMENT_GRANULARITY and #ACTION_PREVIOUS_AT_MOVEMENT_GRANULARITY
AccessibilityViewCommand.MoveHtmlArguments	Arguments for AccessibilityNodeInfoCompat#ACTION_NEXT_HTML_ELEMENT and #ACTION_PREVIOUS_HTML_ELEMENT
AccessibilityViewCommand.MoveWindowArguments	Arguments for #ACTION_MOVE_WINDOW
AccessibilityViewCommand.ScrollToPositionArguments	Arguments for #ACTION_SCROLL_TO_POSITION
AccessibilityViewCommand.SetProgressArguments	Arguments for #ACTION_SET_PROGRESS
AccessibilityViewCommand.SetSelectionArguments	Arguments for #ACTION_SET_SELECTION
AccessibilityViewCommand.SetTextArguments	Arguments for AccessibilityNodeInfoCompat.AccessibilityActionCompat#ACTION_SET_TEXT
AccessibilityWindowInfoCompat	Helper for accessing android.view.accessibility.AccessibilityWindowInfo.
Action	An action contains one or two lines of text, an optional image and an optional id.
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	Listener interface for ActionBar navigation events.
ActionBar.Tab	A tab in the action bar.
ActionBar.TabListener	Callback interface invoked when a tab is focused, unfocused, added, or removed.
ActionBarDrawerToggle	This class provides a handy way to tie together the functionality of DrawerLayout and the framework ActionBar to implement the recommended design for navigation drawers.
ActionBarDrawerToggle.Delegate
ActionBarDrawerToggle.DelegateProvider	Allows an implementing Activity to return an ActionBarDrawerToggle.Delegate to use with ActionBarDrawerToggle.
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.
ActionOnlyNavDirections	An implementation of NavDirections without any arguments.
ActionProvider	This class is a mediator for accomplishing a given task, for example sharing a file.
ActionProvider.VisibilityListener	Listens to changes in visibility as reported by ActionProvider#refreshVisibility().
ActivityCompat	Helper for accessing features in android.app.Activity.
ActivityCompat.OnRequestPermissionsResultCallback	This interface is the contract for receiving the results for permission requests.
ActivityCompat.PermissionCompatDelegate	Customizable delegate that allows delegating permission compatibility methods to a custom implementation.
ActivityInfoCompat	Helper for accessing features in android.content.pm.ActivityInfo.
ActivityManagerCompat	Helper for accessing features in android.app.ActivityManager in a backwards compatible fashion.
ActivityNavigator	ActivityNavigator implements cross-activity navigation.
ActivityNavigator.Destination	NavDestination for activity navigation
ActivityNavigator.Extras	Extras that can be passed to ActivityNavigator to customize what ActivityOptionsCompat and flags are passed through to the call to ActivityCompat#startActivity(Context, Intent, Bundle).
ActivityNavigator.Extras.Builder	Builder for constructing new Extras instances.
ActivityNavigatorDestinationBuilder	DSL for constructing a new ActivityNavigator.Destination
ActivityOptionsCompat	Helper for accessing features in android.app.ActivityOptions in a backwards compatible fashion.
ActivityResult	A container for an activity result as obtained form Activity#onActivityResult
ActivityResultCallback	A type-safe callback to be called when an activity result is available.
ActivityResultCaller	A class that can call Activity#startActivityForResult-style APIs without having to manage request codes, and converting request/response to an Intent
ActivityResultContract	A contract specifying that an activity can be called with an input of type I and produce an output of type O Makes calling an activity for result type-safe.
ActivityResultContract.SynchronousResult	The wrapper for a result provided in getSynchronousResult
ActivityResultContracts	A collection of some standard activity call contracts, as provided by android.
ActivityResultContracts.CreateDocument	An ActivityResultContract to prompt the user to select a path for creating a new document, returning the content: Uri of the item that was created.
ActivityResultContracts.GetContent	An ActivityResultContract to prompt the user to pick a piece of content, receiving a content:// Uri for that content that allows you to use android.content.ContentResolver#openInputStream(Uri) to access the raw data.
ActivityResultContracts.GetMultipleContents	An ActivityResultContract to prompt the user to pick one or more a pieces of content, receiving a content:// Uri for each piece of content that allows you to use android.content.ContentResolver#openInputStream(Uri) to access the raw data.
ActivityResultContracts.OpenDocument	An ActivityResultContract to prompt the user to open a document, receiving its contents as a file:/http:/content: Uri.
ActivityResultContracts.OpenDocumentTree	An ActivityResultContract to prompt the user to select a directory, returning the user selection as a Uri.
ActivityResultContracts.OpenMultipleDocuments	An ActivityResultContract to prompt the user to open (possibly multiple) documents, receiving their contents as file:/http:/content: Uris.
ActivityResultContracts.PickContact	An ActivityResultContract to request the user to pick a contact from the contacts app.
ActivityResultContracts.RequestMultiplePermissions	An ActivityResultContract to request permissions
ActivityResultContracts.RequestPermission	An ActivityResultContract to request a permission
ActivityResultContracts.StartActivityForResult	An ActivityResultContract that doesn't do any type conversion, taking raw Intent as an input and ActivityResult as an output.
ActivityResultContracts.StartIntentSenderForResult	An ActivityResultContract that calls Activity#startIntentSender(IntentSender, Intent, int, int, int).
ActivityResultContracts.TakePicture	An ActivityResultContract to take a picture saving it into the provided content-Uri.
ActivityResultContracts.TakePicturePreview	An ActivityResultContract to take small a picture preview, returning it as a Bitmap.
ActivityResultContracts.TakeVideo	An ActivityResultContract to take a picture saving it into the provided content-Uri.
ActivityResultLauncher	A launcher for a previously-prepared call to start the process of executing an ActivityResultContract.
ActivityResultRegistry	A registry that stores activity result callbacks for registered calls.
ActivityResultRegistryOwner	A class that has an ActivityResultRegistry that allows you to register a ActivityResultCallback for handling an androidx.activity.result.contract.ActivityResultContract.
AdapterListUpdateCallback	ListUpdateCallback that dispatches update events to the given adapter.
AdvertisingIdClient	Client for retrieving Advertising ID related info from an AndroidX ID Provider installed on the device.
AdvertisingIdInfo	Advertising ID Information.
AdvertisingIdNotAvailableException	Indicates an AndroidX Advertising ID is not available.
AdvertisingIdProvider	The class for the AndroidX Advertising ID Provider that should provide the resettable ID and LAT preference should implement this interface.
AdvertisingIdProviderInfo	A AdvertisingIdProviderInfo represents the information about an Advertising ID Provider installed on the device.
AdvertisingIdProviderManager	The AdvertisingIdProviderManager will be used by an Advertising ID Provider to register the provider implementation or retrieve all the Advertising ID Providers on the device.
AdvertisingIdService	The internal service of AndroidX Advertising ID Provider library to provide the Advertising ID.
AlarmManagerCompat	Compatibility library for AlarmManager with fallbacks for older platforms.
AlertDialog	A subclass of Dialog that can display one, two or three buttons.
AlertDialog.Builder
AmbientMode	Use this as a headless Fragment to add ambient support to an Activity on Wearable devices.
AmbientMode.AmbientCallback	Callback to receive ambient mode state changes.
AmbientMode.AmbientCallbackProvider	Interface for any Activity that wishes to implement Ambient Mode.
AmbientMode.AmbientController	A class for interacting with the ambient mode on a wearable device.
AmbientModeSupport	Use this as a headless Fragment to add ambient support to an Activity on Wearable devices.
AmbientModeSupport.AmbientCallback	Callback to receive ambient mode state changes.
AmbientModeSupport.AmbientCallbackProvider	Interface for any Activity that wishes to implement Ambient Mode.
AmbientModeSupport.AmbientController	A class for interacting with the ambient mode on a wearable device.
AndroidBenchmarkRunner	Instrumentation runner for benchmarks, used to increase stability of measurements and minimize interference.
AndroidViewModel	Application context aware ViewModel.
Animatable2Compat	Interface that drawables supporting animations and callbacks should extend in support lib.
Animatable2Compat.AnimationCallback	Abstract class for animation callback.
AnimatedStateListDrawableCompat	A Drawable providing animated transitions between states.
AnimatedVectorDrawableCompat	For API 24 and above, this class is delegating to the framework's .
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.
Animator.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.
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.
AnimatorRes	Denotes that an integer parameter, field or method return value is expected to be an animator resource reference (e.g.
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.
AnimatorTestRule	JUnit TestRule that can be used to run Animators without actually waiting for the duration of the animation.
AnimBuilder	DSL for setting custom Animation or Animator resources on a NavOptionsBuilder
AnimRes	Denotes that an integer parameter, field or method return value is expected to be an anim resource reference (e.g.
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.
AnyRes	Denotes that an integer parameter, field or method return value is expected to be a resource reference of any type.
AnyThread	Denotes that the annotated method can be called from any thread (e.g. it is "thread safe".) If the annotated element is a class, then all methods in the class can be called from any thread.
AppBarConfiguration	Configuration options for NavigationUI methods that interact with implementations of the app bar pattern such as androidx.appcompat.widget.Toolbar, com.google.android.material.appbar.CollapsingToolbarLayout, and androidx.appcompat.app.ActionBar.
AppBarConfiguration.Builder	The Builder class for constructing new AppBarConfiguration instances.
AppBarConfiguration.OnNavigateUpListener	Interface for providing custom 'up' behavior beyond what is provided by androidx.navigation.NavController#navigateUp().
AppCompatActivity	Base class for activities that wish to use some of the newer platform features on older Android devices.
AppCompatAutoCompleteTextView	A AutoCompleteTextView which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using R.attr#backgroundTint and R.attr#backgroundTintMode.
AppCompatButton	A Button which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using R.attr#backgroundTint and R.attr#backgroundTintMode.
AppCompatCallback	Implemented this in order for AppCompat to be able to callback in certain situations.
AppCompatCheckBox	A CheckBox which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.widget.CompoundButtonCompat. Allows setting of the background tint using R.attr#buttonTint and R.attr#buttonTintMode.
AppCompatCheckedTextView	A CheckedTextView which supports compatible features on older versions of the platform.
AppCompatDelegate	This class represents a delegate which you can use to extend AppCompat's support to any android.app.Activity.
AppCompatDialog	Base class for AppCompat themed android.app.Dialogs.
AppCompatDialogFragment	A special version of DialogFragment which uses an AppCompatDialog in place of a platform-styled dialog.
AppCompatEditText	A EditText which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using R.attr#backgroundTint and R.attr#backgroundTintMode. Allows setting a custom receiver callback in order to handle insertion of content (e.g. pasting text or an image from the clipboard). This callback provides the opportunity to implement app-specific handling such as creating an attachment when an image is pasted.
AppCompatImageButton	A ImageButton which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using R.attr#backgroundTint and R.attr#backgroundTintMode. Allows dynamic tint of its image via the image tint methods in ImageViewCompat. Allows setting of the image tint using R.attr#tint and R.attr#tintMode.
AppCompatImageView	A ImageView which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using androidx.appcompat.R.attr#backgroundTint and androidx.appcompat.R.attr#backgroundTintMode. Allows dynamic tint of its image via the image tint methods in ImageViewCompat. Allows setting of the image tint using androidx.appcompat.R.attr#tint and androidx.appcompat.R.attr#tintMode.
AppCompatMultiAutoCompleteTextView	A MultiAutoCompleteTextView which supports compatible features on older version of the platform, including: Supports R.attr#textAllCaps style attribute which works back to Gingerbread. Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using R.attr#backgroundTint and R.attr#backgroundTintMode.
AppCompatRadioButton	A RadioButton which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.widget.CompoundButtonCompat. Allows setting of the background tint using R.attr#buttonTint and R.attr#buttonTintMode.
AppCompatRatingBar	A RatingBar which supports compatible features on older versions of the platform.
AppCompatResources	Class for accessing an application's resources through AppCompat, and thus any backward compatible functionality.
AppCompatSeekBar	A SeekBar which supports compatible features on older versions of the platform.
AppCompatSpinner	A Spinner which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using R.attr#buttonTint and R.attr#buttonTintMode. Setting the popup theme using R.attr#popupTheme.
AppCompatTextView	A TextView which supports compatible features on older versions of the platform, including: Allows dynamic tint of its background via the background tint methods in androidx.core.view.ViewCompat. Allows setting of the background tint using androidx.appcompat.R.attr#backgroundTint and androidx.appcompat.R.attr#backgroundTintMode. Supports auto-sizing via androidx.core.widget.TextViewCompat by allowing to instruct a TextView to let the size of the text expand or contract automatically to fill its layout based on the TextView's characteristics and boundaries. The style attributes associated with auto-sizing are androidx.appcompat.R.attr#autoSizeTextType, androidx.appcompat.R.attr#autoSizeMinTextSize, androidx.appcompat.R.attr#autoSizeMaxTextSize, androidx.appcompat.R.attr#autoSizeStepGranularity and androidx.appcompat.R.attr#autoSizePresetSizes, all of which work back to Ice Cream Sandwich.
AppCompatToggleButton	A ToggleButton which supports compatible features on older versions of the platform, including: Allows setting of the font family using android.R.attr#fontFamily
AppCompatViewInflater	This class is used by AppCompat to automatically "substitute" all usages of core Android widgets inflated from layout files by the AppCompat extensions of those widgets.
AppComponentFactory	Version of android.app.AppComponentFactory that works with androidx libraries.
AppInitializer	An AppInitializer can be used to initialize all discovered [ComponentInitializer]s.
AppLaunchChecker	This class provides APIs for determining how an app has been launched.
AppOpsManagerCompat	Helper for accessing features in android.app.AppOpsManager.
AppWidgetProviderWithCallbacks	Version of AppWidgetProvider that implements a CallbackReceiver.
ArcMotion	A PathMotion that generates a curved path along an arc on an imaginary circle containing the two points.
ArgbEvaluator	This evaluator can be used to perform type interpolation between integer values that represent ARGB colors.
ArrayCreatingInputMerger	An InputMerger that attempts to merge the inputs, creating arrays when necessary.
ArrayMap	ArrayMap is a generic key->value mapping data structure that is designed to be more memory efficient than a traditional java.util.HashMap, this implementation is a version of the platform's android.util.ArrayMap that can be used on older versions of the platform.
ArrayObjectAdapter	An ObjectAdapter implemented with an ArrayList.
ArrayRes	Denotes that an integer parameter, field or method return value is expected to be an array resource reference (e.g.
ArraySet	ArraySet is a generic set data structure that is designed to be more memory efficient than a traditional java.util.HashSet.
AspectRatio	The aspect ratio of the use case.
Assisted	Marks a parameter in a androidx.hilt.lifecycle.ViewModelInject-annotated constructor or a androidx.hilt.work.WorkerInject-annotated constructor to be assisted injected at runtime via a factory.
AsyncDifferConfig	Configuration object for ListAdapter, AsyncListDiffer, and similar background-thread list diffing adapter logic.
AsyncDifferConfig.Builder	Builder class for AsyncDifferConfig.
AsyncLayoutInflater	Helper class for inflating layouts asynchronously.
AsyncLayoutInflater.OnInflateFinishedListener
AsyncListDiffer	Helper for computing the difference between two lists via DiffUtil on a background thread.
AsyncListDiffer.ListListener	Listener for when the current List is updated.
AsyncListUtil	A utility class that supports asynchronous content loading.
AsyncListUtil.DataCallback	The callback that provides data access for AsyncListUtil.
AsyncListUtil.ViewCallback	The callback that links AsyncListUtil with the list view.
AsyncPagedListDiffer	Helper object for mapping a androidx.paging.PagedList into a RecyclerView.Adapter.
AsyncPagedListDiffer.PagedListListener	Listener for when the current PagedList is updated.
AsyncPagingDataDiffer	Helper class for mapping a PagingData into a RecyclerView.Adapter.
AsyncTaskLoader	Static library support version of the framework's android.content.AsyncTaskLoader.
AtomicFile	Static library support version of the framework's android.util.AtomicFile, a 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.
AttrRes	Denotes that an integer parameter, field or method return value is expected to be an attribute reference (e.g.
AudioAttributesCompat	A class to encapsulate a collection of attributes describing information about an audio stream.
AudioAttributesCompat.Builder	Builder class for AudioAttributesCompat objects.
AudioFocusRequestCompat	Compatibility version of an AudioFocusRequest.
AudioFocusRequestCompat.Builder	Builder class for AudioFocusRequestCompat objects.
AudioManagerCompat	Compatibility library for AudioManager with fallbacks for older platforms.
AutoImageCaptureExtender	Load the OEM extension implementation for auto effect type.
AutoPreviewExtender	Load the OEM extension Preview implementation for auto effect type.
AutoScrollHelper	AutoScrollHelper is a utility class for adding automatic edge-triggered scrolling to Views.
AutoTransition	Utility class for creating a default transition that automatically fades, moves, and resizes views during a scene change.

B

BackgroundManager	Supports background image continuity between multiple Activities.
BackoffPolicy	An enumeration of backoff policies when retrying work.
BandPredicate	Provides a means of controlling when and where band selection can be initiated.
BandPredicate.EmptyArea	A BandPredicate that allows initiation of band selection only in areas of RecyclerView that map to RecyclerView#NO_POSITION.
BandPredicate.NonDraggableArea	A BandPredicate that allows initiation of band selection in any area that is not draggable as determined by consulting ItemDetailsLookup.ItemDetails#inDragRegion(MotionEvent).
BaseCardView	A card style layout that responds to certain state changes.
BaseCardView.LayoutParams	Per-child layout information associated with BaseCardView.
BaseFragment	Base class for leanback Fragments.
BaseGridView	An abstract base class for vertically and horizontally scrolling lists.
BaseGridView.OnKeyInterceptListener	Listener for intercepting key dispatch events.
BaseGridView.OnLayoutCompletedListener	Interface for receiving notification when BaseGridView has completed a full layout calculation.
BaseGridView.OnMotionInterceptListener	Listener for intercepting generic motion dispatch events.
BaseGridView.OnTouchInterceptListener	Listener for intercepting touch dispatch events.
BaseGridView.OnUnhandledKeyListener
BaseGridView.SmoothScrollByBehavior	Defines behavior of duration and interpolator for smoothScrollBy().
BaseLeanbackPreferenceFragment	This fragment provides a preference fragment with leanback-style behavior, suitable for embedding into broader UI elements.
BaseLeanbackPreferenceFragmentCompat	This fragment provides a preference fragment with leanback-style behavior, suitable for embedding into broader UI elements.
BaseOnItemViewClickedListener	Interface for receiving notification when an item view holder is clicked.
BaseOnItemViewSelectedListener	Interface for receiving notification when a row or item becomes selected.
BaseSupportFragment	Base class for leanback Fragments.
BatchingListUpdateCallback	Wraps a ListUpdateCallback callback and batches operations that can be merged.
BeautyImageCaptureExtender	Load the OEM extension implementation for beauty effect type.
BeautyPreviewExtender	Load the OEM extension Preview implementation for beauty effect type.
BenchmarkRule	JUnit rule for benchmarking code on an Android device.
BenchmarkRule.Scope	Handle used for controlling timing during measureRepeated.
BenchmarkState	Control object for benchmarking in the code in Java.
BenchmarkState.ExperimentalExternalReport
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.
BidirectionalTypeConverter	Abstract base class used convert type T to another type V and back again.
BinderThread	Denotes that the annotated method should only be called on the binder thread.
BiometricManager	A class that provides system information related to biometrics (e.g. fingerprint, face, etc.).
BiometricPrompt	A class that manages a system-provided biometric prompt.
BiometricPrompt.AuthenticationCallback	A collection of methods that may be invoked by BiometricPrompt during authentication.
BiometricPrompt.AuthenticationResult	A container for data passed to AuthenticationCallback#onAuthenticationSucceeded( * AuthenticationResult) when the user has successfully authenticated.
BiometricPrompt.CryptoObject	A wrapper class for the crypto objects supported by BiometricPrompt.
BiometricPrompt.PromptInfo	A set of configurable options for how the BiometricPrompt should appear and behave.
BiometricPrompt.PromptInfo.Builder	A builder used to set individual options for the PromptInfo class.
BitmapCompat	Helper for accessing features in android.graphics.Bitmap.
BlendModeColorFilterCompat	Helper for accessing ColorFilter APIs on various API levels of the platform
BlendModeCompat	Compat version of android.graphics.BlendMode, usages of BlendModeCompat will map to android.graphics.PorterDuff.Mode wherever possible
BokehImageCaptureExtender	Loads the OEM extension implementation for bokeh effect type.
BokehPreviewExtender	Load the OEM extension Preview implementation for bokeh effect type.
BoolRes	Denotes that an integer parameter, field or method return value is expected to be a boolean resource reference.
BounceInterpolator	An interpolator where the change bounces at the end.
BoundaryInterfaceReflectionUtil	A set of utility methods used for calling across the support library boundary.
BoundsRule	This class contains the rules for updating the bounds of a CompositeDrawable.ChildDrawable.
BoundsRule.ValueRule	This class represents individual rules for updating the bounds.
BoxInsetLayout	BoxInsetLayout is a screen shape-aware ViewGroup that can box its children in the center square of a round screen by using the layout_boxedEdges attribute.
BoxInsetLayout.LayoutParams	Per-child layout information for layouts that support margins, gravity and boxedEdges.
BrandedFragment	Fragment class for managing search and branding using a view that implements TitleViewAdapter.Provider.
BrandedSupportFragment	Fragment class for managing search and branding using a view that implements TitleViewAdapter.Provider.
BroadcastReceiverWithCallbacks	Extend this broadcast receiver to be able to receive callbacks as well as normal broadcasts.
BrowseFragment	A fragment for creating Leanback browse screens.
BrowseFragment.BrowseTransitionListener	Listener for transitions between browse headers and rows.
BrowseFragment.FragmentFactory	Factory class responsible for creating fragment given the current item.
BrowseFragment.FragmentHost	Possible set of actions that BrowseFragment exposes to clients.
BrowseFragment.ListRowFragmentFactory	FragmentFactory implementation for ListRow.
BrowseFragment.MainFragmentAdapter	Interface that defines the interaction between BrowseFragment and its main content fragment.
BrowseFragment.MainFragmentAdapterProvider	Interface to be implemented by all fragments for providing an instance of MainFragmentAdapter.
BrowseFragment.MainFragmentAdapterRegistry	Registry class maintaining the mapping of Row subclasses to FragmentFactory.
BrowseFragment.MainFragmentRowsAdapter	This is used to pass information to RowsFragment or its subclasses.
BrowseFragment.MainFragmentRowsAdapterProvider	Interface to be implemented by RowsFragment and its subclasses for providing an instance of MainFragmentRowsAdapter.
BrowseFrameLayout	A ViewGroup for managing focus behavior between overlapping views.
BrowseFrameLayout.OnChildFocusListener	Interface for managing child focus in a BrowseFrameLayout.
BrowseFrameLayout.OnFocusSearchListener	Interface for selecting a focused view in a BrowseFrameLayout when the system focus finder couldn't find a view to focus.
BrowserActionItem	A wrapper class holding custom item of Browser Actions menu.
BrowserActionsIntent	Class holding the Intent and start bundle for a Browser Actions Activity.
BrowserActionsIntent.Builder	Builder class for opening a Browser Actions context menu.
BrowseSupportFragment	A fragment for creating Leanback browse screens.
BrowseSupportFragment.BrowseTransitionListener	Listener for transitions between browse headers and rows.
BrowseSupportFragment.FragmentFactory	Factory class responsible for creating fragment given the current item.
BrowseSupportFragment.FragmentHost	Possible set of actions that BrowseSupportFragment exposes to clients.
BrowseSupportFragment.ListRowFragmentFactory	FragmentFactory implementation for ListRow.
BrowseSupportFragment.MainFragmentAdapter	Interface that defines the interaction between BrowseSupportFragment and its main content fragment.
BrowseSupportFragment.MainFragmentAdapterProvider	Interface to be implemented by all fragments for providing an instance of MainFragmentAdapter.
BrowseSupportFragment.MainFragmentAdapterRegistry	Registry class maintaining the mapping of Row subclasses to FragmentFactory.
BrowseSupportFragment.MainFragmentRowsAdapter	This is used to pass information to RowsSupportFragment or its subclasses.
BrowseSupportFragment.MainFragmentRowsAdapterProvider	Interface to be implemented by RowsSupportFragment and its subclasses for providing an instance of MainFragmentRowsAdapter.
BuildCompat	This class contains additional platform version checking methods for targeting pre-release versions of Android.
BundleCompat	Helper for accessing features in Bundle.
BundledEmojiCompatConfig	EmojiCompat.Config implementation that loads the metadata using AssetManager and bundled resources.

C

CallbackHandlerRegistry	The holder for callbacks that are tagged with RemoteCallable.
CallbackHandlerRegistry.CallbackHandler	The interface used to trigger a callback when the pending intent is fired.
CallbackMediaItem	Structure for media item descriptor for DataSourceCallback.
CallbackMediaItem.Builder	This Builder class simplifies the creation of a CallbackMediaItem object.
CallbackReceiver	An objects that can receive remote callbacks.
CallbackToFutureAdapter	A utility useful for adapting interfaces that take callbacks into interfaces that return .
CallbackToFutureAdapter.Completer	Used to complete the future returned by getFuture
CallbackToFutureAdapter.Resolver	This interface should be implemented by the object passed into getFuture(Resolver).
CallSuper	Denotes that any overriding methods should invoke this method as well.
Camera	The camera interface is used to control the flow of data to use cases, control the camera via the CameraControl, and publish the state of the camera via CameraInfo.
Camera2CameraFilter	Provides ability to filter cameras with camera IDs and characteristics and create the corresponding CameraFilter.
Camera2CameraFilter.Camera2Filter	An interface that filters cameras based on camera IDs and characteristics.
Camera2CameraInfo	Provides ability to extract Camera2-related camera information from CameraInfo.
Camera2Config	Convenience class for generating a pre-populated Camera2 CameraXConfig.
Camera2Interop	Utilities related to interoperability with the android.hardware.camera2 APIs.
Camera2Interop.Extender	Extends a ExtendableBuilder to add Camera2 options.
CameraControl	The CameraControl provides various asynchronous operations like zoom, focus and metering which affects output of all UseCases currently bound to that camera.
CameraControl.OperationCanceledException	An exception representing a failure that the operation is canceled which might be caused by a new value is set or camera is closed.
CameraFilter	An interface for filtering cameras.
CameraInfo	An interface for retrieving camera information.
CameraInfoUnavailableException	An exception thrown when unable to retrieve information about a camera.
CameraSelector	A set of requirements and priorities used to select a camera.
CameraSelector.Builder	Builder for a CameraSelector.
CameraUnavailableException	CameraUnavailableException is thrown when a camera device could not be queried or opened or if the connection to an opened camera device is no longer valid.
CameraView	A View that displays a preview of the camera with methods , takePicture(ImageCapture.OutputFileOptions, Executor, OnImageSavedCallback), startRecording(File, Executor, OnVideoSavedCallback) and stopRecording().
CameraView.CaptureMode	The capture mode used by CameraView.
CameraXConfig	A configuration for adding implementation and user-specific behavior to CameraX.
CameraXConfig.Builder	A builder for generating CameraXConfig objects.
CameraXConfig.Provider	An interface which can be implemented to provide the configuration for CameraX.
CancellationSignal	Static library support version of the framework's android.os.CancellationSignal.
CancellationSignal.OnCancelListener	Listens for cancellation.
CardView	A FrameLayout with a rounded corner background and shadow.
CellBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
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 android.view.View#getClipBounds() before and after the scene change and animates those changes during the transition.
ChangeImageTransform	This Transition captures an ImageView's matrix before and after the scene change and animates it during the transition.
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	A convenience class to access TvContractCompat.Channels entries in the system content provider.
Channel.Builder	The builder class that makes it easy to chain setters to create a Channel object.
ChannelLogoUtils	A utility class for conveniently storing and loading channel logos.
CheckBoxPreference	A Preference that provides checkbox widget functionality.
CheckResult	Denotes that the annotated method returns a result that it typically is an error to ignore.
ChecksSdkIntAtLeast	Denotes that the annotated method checks if the SDK_INT API level is at least the given value, and either returns it or executes the given lambda in that case (or if it's a field, has the value true).
CircularArray	CircularArray is a generic circular array data structure that provides O(1) random read, O(1) prepend and O(1) append.
CircularIntArray	CircularIntArray is a circular integer array data structure that provides O(1) random read, O(1) prepend and O(1) append.
CircularProgressDrawable	Drawable that renders the animated indeterminate progress indicator in the Material design style without depending on API level 11.
CircularProgressLayout	CircularProgressLayout adds a circular countdown timer behind the view it contains, typically used to automatically confirm an operation after a short delay has elapsed.
CircularProgressLayout.OnTimerFinishedListener	Interface to implement for listening to event.
CircularPropagation	A propagation that varies with the distance to the epicenter of the Transition or center of the scene if no epicenter exists.
ClassPresenterSelector	A ClassPresenterSelector selects a Presenter based on the item's Java class.
CollapsibleActionView	When a android.view.View implements this interface it will receive callbacks when expanded or collapsed as an action view alongside the optional, app-specified callbacks to androidx.core.view.MenuItemCompat.OnActionExpandListener.
ColorFilterCache	Cache of ColorFilters for a given color at different alpha levels.
ColorFilterDimmer	Helper class for applying a dim level to a View.
ColorInt	Denotes that the annotated element represents a packed color int, AARRGGBB.
ColorLong	Denotes that the annotated element represents a packed color long.
ColorOverlayDimmer	Helper class for assigning a dim color to Paint.
ColorRes	Denotes that an integer parameter, field or method return value is expected to be a color resource reference (e.g.
ColorUtils	A set of color-related utility methods, building upon those available in Color.
ColumnInfo	Allows specific customization about the column associated with this field.
ColumnInfo.Collate
ColumnInfo.SQLiteTypeAffinity	The SQLite column type constants that can be used in typeAffinity()
CombinedLoadStates	Collection of pagination LoadStates for both a PagingSource, and RemoteMediator.
ComponentActivity	Base class for activities that enables composition of higher level components.
CompositeDrawable	Generic drawable class that can be composed of multiple children.
CompositeDrawable.ChildDrawable	Wrapper class holding a drawable object and BoundsRule to update drawable bounds when parent bound changes.
CompositePageTransformer	Allows for combining multiple PageTransformer objects.
CompoundButtonCompat	Helper for accessing android.widget.CompoundButton.
ConcatAdapter	An Adapter implementation that presents the contents of multiple adapters in sequence.
ConcatAdapter.Config	The configuration object for a ConcatAdapter.
ConcatAdapter.Config.Builder	The builder for Config class.
ConcatAdapter.Config.StableIdMode	Defines how ConcatAdapter handle stable ids (Adapter#hasStableIds()).
Configuration	The Configuration object used to customize WorkManager upon initialization.
Configuration.Builder	A Builder for Configurations.
Configuration.Provider	A class that can provide the Configuration for WorkManager and allow for on-demand initialization of WorkManager.
ConfigurationCompat	Helper class which allows access to properties of Configuration in a backward compatible fashion.
ConfigurationHelper	Helper class which allows access to properties of Configuration in a backward compatible fashion.
ConfirmationActivity	This Activity is used to display confirmation animations after the user completes an action on the wearable.
ConfirmationOverlay	Displays a full-screen confirmation animation with optional text and then hides it.
ConfirmationOverlay.OnAnimationFinishedListener	Interface for listeners to be notified when the ConfirmationOverlay animation has finished and its View has been removed.
ConfirmationOverlay.OverlayType	Types of animations to display in the overlay.
ConnectivityManagerCompat	Helper for accessing features in ConnectivityManager.
Constants	Internal constants for dynamic feature navigator.
Constraints	A specification of the requirements that need to be met before a WorkRequest can run.
Constraints.Builder	A Builder for a Constraints object.
Consumer	Compat version of java.util.function.Consumer
ContentLoadingProgressBar	ContentLoadingProgressBar implements a ProgressBar that waits a minimum time to be dismissed before showing.
ContentPager	ContentPager provides support for loading "paged" data on a background thread using the ContentResolver framework.
ContentPager.ContentCallback	Callback by which a client receives results of a query.
ContentPager.CursorDisposition
ContentPager.QueryRunner	Implementations of this interface provide the mechanism for execution of queries off the UI thread.
ContentPager.QueryRunner.Callback	Callback that receives a cursor once a query as been executed on the Runner.
ContentProviderCompat	Helper for accessing features in android.content.ContentProvider in a backwards compatible fashion.
ContentProviderWithCallbacks	Version of ContentProvider that can be used as a CallbackReceiver.
ContentRecommendation	The ContentRecommendation object encapsulates all application provided data for a single content recommendation item.
ContentRecommendation.Builder	Builder class for ContentRecommendation objects.
ContentRecommendation.ContentMaturity
ContentRecommendation.ContentPricing
ContentRecommendation.ContentStatus
ContentRecommendation.ContentType
ContentRecommendation.IntentData	Object used to encapsulate the data to be used to build the PendingIntent object associated with a given content recommendation, at the time this recommendation gets posted to the home Screen.
ContentRecommendation.IntentType
ContentResolverCompat	Helper for accessing features in android.content.ContentResolver in a backwards compatible fashion.
ContentView	Annotation that can be attached to a constructor with a single LayoutRes parameter to denote what layout the component intends to inflate and set as its content.
ContextCompat	Helper for accessing features in android.content.Context.
ContextThemeWrapper	A context wrapper that allows you to modify or replace the theme of the wrapped context.
ControlButtonPresenterSelector	Displays primary and secondary controls for a PlaybackControlsRow.
ConversationAction	Represents an 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.
CoordinatorLayout	CoordinatorLayout is a super-powered FrameLayout.
CoordinatorLayout.AttachedBehavior	Defines the default attached Behavior of a View class
CoordinatorLayout.Behavior	Interaction behavior plugin for child views of CoordinatorLayout.
CoordinatorLayout.DefaultBehavior	Defines the default Behavior of a View class.
CoordinatorLayout.LayoutParams	Parameters describing the desired layout for a child of a CoordinatorLayout.
CoordinatorLayout.SavedState
CoroutinesRoom	A helper class for supporting Kotlin Coroutines in Room.
CoroutineWorker	A ListenableWorker implementation that provides interop with Kotlin Coroutines.
CountingTaskExecutorRule	A JUnit Test Rule that swaps the background executor used by the Architecture Components with a different one which counts the tasks as they are start and finish.
CursorAdapter	Static library support version of the framework's android.widget.CursorAdapter.
CursorLoader	Static library support version of the framework's android.content.CursorLoader.
CursorMapper	Abstract class used to convert the current Cursor row to a single object.
CursorObjectAdapter	An ObjectAdapter implemented with a Cursor.
CursorWindowCompat	Helper for accessing features in android.database.CursorWindow
CurvingLayoutCallback	An implementation of the WearableLinearLayoutManager.LayoutCallback aligning the children of the associated WearableRecyclerView along a pre-defined vertical curve.
CustomTabColorSchemeParams	Contains visual parameters of a Custom Tab that may depend on the color scheme.
CustomTabColorSchemeParams.Builder	Builder class for CustomTabColorSchemeParams objects.
CustomTabsCallback	A callback class for custom tabs client to get messages regarding events in their custom tabs.
CustomTabsClient	Class to communicate with a CustomTabsService and create CustomTabsSession from it.
CustomTabsIntent	Class holding the Intent and start bundle for a Custom Tabs Activity.
CustomTabsIntent.Builder	Builder class for CustomTabsIntent objects.
CustomTabsService	Abstract service class for implementing Custom Tabs related functionality.
CustomTabsService.Relation
CustomTabsService.Result
CustomTabsServiceConnection	Abstract ServiceConnection to use while binding to a CustomTabsService.
CustomTabsSession	A class to be used for Custom Tabs related communication.
CustomTabsSessionToken	Wrapper class that can be used as a unique identifier for a session.
CycleInterpolator	Repeats the animation for a specified number of cycles.

D

Dao	Marks the class as a Data Access Object.
Data	A persistable set of key/value pairs which are used as inputs and outputs for ListenableWorkers.
Data.Builder	A builder for Data objects.
Database	Marks a class as a RoomDatabase.
DatabaseConfiguration	Configuration class for a RoomDatabase.
DatabaseUtilsCompat	Helper for accessing features in android.database.DatabaseUtils.
DatabaseView	Marks a class as an SQLite view.
DataSource	Base class for loading pages of snapshot data into a PagedList.
DataSource.Factory	Factory for DataSources.
DataSource.InvalidatedCallback	Invalidation callback for DataSource.
DataSourceCallback	For supplying media data, implement this if your app has special requirements for the way media data is obtained.
DatePicker	DatePicker is a directly subclass of Picker.
DecelerateInterpolator	An interpolator where the rate of change starts out quickly and and then decelerates.
DefaultItemAnimator	This implementation of RecyclerView.ItemAnimator provides basic animations on remove, add, and move events that happen to the items in a RecyclerView.
DefaultLifecycleObserver	Callback interface for listening to LifecycleOwner state changes.
DefaultProgressFragment	The default androidx.fragment.app.Fragment to display during installation progress.
DelegatingWorkerFactory	A WorkerFactory which delegates to other factories.
Delete	Marks a method in a Dao annotated class as a delete method.
DetailsFragment	A fragment for creating Leanback details screens.
DetailsFragmentBackgroundController	Controller for DetailsFragment parallax background and embedded video play.
DetailsOverviewLogoPresenter	Presenter that responsible to create a ImageView and bind to DetailsOverviewRow.
DetailsOverviewLogoPresenter.ViewHolder	ViewHolder for Logo view of DetailsOverviewRow.
DetailsOverviewRow	An overview Row for a details fragment.
DetailsOverviewRow.Listener	Listener for changes of DetailsOverviewRow.
DetailsOverviewRowPresenter	Renders a DetailsOverviewRow to display an overview of an item.
DetailsOverviewRowPresenter.ViewHolder	A ViewHolder for the DetailsOverviewRow.
DetailsParallax	Subclass of Parallax object that tracks overview row's top and bottom edge in DetailsFragment or DetailsSupportFragment.
DetailsSupportFragment	A fragment for creating Leanback details screens.
DetailsSupportFragmentBackgroundController	Controller for DetailsSupportFragment parallax background and embedded video play.
DeviceState	Information about the state of the device.
DeviceState.Builder	Builder for DeviceState objects.
DialogCompat	Helper for accessing features in android.app.Dialog in a backwards compatible fashion.
DialogFragment	Static library support version of the framework's android.app.DialogFragment.
DialogFragmentNavigator	Navigator that uses DialogFragment#show(FragmentManager, String).
DialogFragmentNavigator.Destination	NavDestination specific to DialogFragmentNavigator.
DialogFragmentNavigatorDestinationBuilder	DSL for constructing a new DialogFragmentNavigator.Destination
DialogPreference	A base class for Preferences that are dialog-based.
DialogPreference.TargetFragment	Interface for PreferenceFragmentCompats to implement to allow DialogPreferences to find the preference that launched the dialog.
DiffCallback	Callback that informs ArrayObjectAdapter how to compute list updates when using DiffUtil in ArrayObjectAdapter#setItems(List, * DiffCallback) method.
DiffUtil	DiffUtil is a utility class that calculates the difference between two lists and outputs a list of update operations that converts the first list into the second one.
DiffUtil.Callback	A Callback class used by DiffUtil while calculating the diff between two lists.
DiffUtil.DiffResult	This class holds the information about the result of a DiffUtil#calculateDiff(Callback, boolean) call.
DiffUtil.ItemCallback	Callback for calculating the diff between two non-null items in a list.
DimenRes	Denotes that an integer parameter, field or method return value is expected to be a dimension resource reference (e.g.
Dimension	Denotes that an integer parameter, field or method return value is expected to represent a dimension.
DirectExecutor	A simple Executor.
DisplayCompat	A class for retrieving the physical display size from a device.
DisplayCompat.ModeCompat	Compat class which provides an additional isNative() field.
DisplayCutoutCompat	Represents the area of the display that is not functional for displaying content.
DisplayFeature	Description of a physical feature on the display.
DisplayFeature.Builder	Builder for DisplayFeature objects.
DisplayManagerCompat	Helper for accessing features in android.hardware.display.DisplayManager.
DisplayOrientedMeteringPointFactory	A MeteringPointFactory that can convert a View (x, y) into a MeteringPoint which can then be used to construct a FocusMeteringAction to start a focus and metering action.
DividerItemDecoration	DividerItemDecoration is a RecyclerView.ItemDecoration that can be used as a divider between items of a LinearLayoutManager.
DividerPresenter	DividerPresenter provides a default presentation for DividerRow in HeadersFragment.
DividerRow	Used to represent divider in HeadersFragment.
DocumentFile	Representation of a document backed by either a android.provider.DocumentsProvider or a raw file on disk.
DragAndDropPermissionsCompat	Helper for accessing features in android.view.DragAndDropPermissions a backwards compatible fashion.
DragStartHelper	DragStartHelper is a utility class for implementing drag and drop support.
DragStartHelper.OnDragStartListener	Interface definition for a callback to be invoked when a drag start gesture is detected.
DrawableCompat	Helper for accessing features in android.graphics.drawable.Drawable.
DrawableRes	Denotes that an integer parameter, field or method return value is expected to be a drawable resource reference (e.g.
DrawerArrowDrawable	A drawable that can draw a "Drawer hamburger" menu or an arrow and animate between them.
DrawerLayout	DrawerLayout acts as a top-level container for window content that allows for interactive "drawer" views to be pulled out from one or both vertical edges of the window.
DrawerLayout.DrawerListener	Listener for monitoring events about drawers.
DrawerLayout.LayoutParams
DrawerLayout.SavedState	State persisted across instances
DrawerLayout.SimpleDrawerListener	Stub/no-op implementations of all methods of DrawerListener.
DropDownPreference	A ListPreference that presents the options in a drop down menu rather than a dialog.
DynamicActivityNavigator	Dynamic feature navigator for Activity destinations.
DynamicActivityNavigator.Destination	Destination for DynamicActivityNavigator.
DynamicActivityNavigatorDestinationBuilder	DSL for constructing a new DynamicActivityNavigator.Destination
DynamicAnimation	This class is the base class of physics-based animations.
DynamicAnimation.OnAnimationEndListener	An animation listener that receives end notifications from an animation.
DynamicAnimation.OnAnimationUpdateListener	Implementors of this interface can add themselves as update listeners to an DynamicAnimation instance to receive callbacks on every animation frame, after the current frame's values have been calculated for that DynamicAnimation.
DynamicAnimation.ViewProperty	ViewProperty holds the access of a property of a View.
DynamicExtras	Extras for dynamic navigators.
DynamicFragmentNavigator	The Navigator that enables navigating to destinations within dynamic feature modules.
DynamicFragmentNavigator.Destination	Destination for dynamic feature navigator.
DynamicFragmentNavigatorDestinationBuilder	DSL for constructing a new DynamicFragmentNavigator.Destination
DynamicGraphNavigator	Navigator for graphs in dynamic feature modules.
DynamicGraphNavigator.DynamicNavGraph	The NavGraph for dynamic features.
DynamicIncludeGraphNavigator	Navigator for include-dynamic.
DynamicIncludeGraphNavigator.DynamicIncludeNavGraph	The graph for dynamic-include.
DynamicIncludeNavGraphBuilder	DSL for constructing a new DynamicIncludeGraphNavigator.DynamicIncludeNavGraph
DynamicInstallManager	Install manager for dynamic features.
DynamicInstallMonitor	Monitor installation progress of dynamic feature modules.
DynamicNavGraphBuilder	DSL for constructing a new DynamicGraphNavigator.DynamicNavGraph
DynamicNavHostFragment	The NavHostFragment for dynamic features.

E

EdgeEffectCompat	Helper for accessing android.widget.EdgeEffect.
EditorInfoCompat	Helper for accessing features in EditorInfo in a backwards compatible fashion.
EditTextPreference	A DialogPreference that shows a EditText in the dialog.
EditTextPreference.OnBindEditTextListener	Interface definition for a callback to be invoked when the corresponding dialog view for this preference is bound.
EditTextPreference.SimpleSummaryProvider	A simple androidx.preference.Preference.SummaryProvider implementation for an EditTextPreference.
EditTextPreferenceDialogFragment
EditTextPreferenceDialogFragmentCompat
Embedded	Marks a field of an Entity or POJO to allow nested fields (i.e. fields of the annotated field's class) to be referenced directly in the SQL queries.
EmojiAppCompatButton	AppCompatButton widget enhanced with emoji capability by using EmojiTextViewHelper.
EmojiAppCompatEditText	AppCompatEditText widget enhanced with emoji capability by using EmojiEditTextHelper.
EmojiAppCompatTextView	AppCompatTextView widget enhanced with emoji capability by using EmojiTextViewHelper.
EmojiButton	Button widget enhanced with emoji capability by using EmojiTextViewHelper.
EmojiCompat	Main class to keep Android devices up to date with the newest emojis by adding EmojiSpans to a given .
EmojiCompat.Config	Configuration class for EmojiCompat.
EmojiCompat.InitCallback	Listener class for the initialization of the EmojiCompat.
EmojiCompat.MetadataRepoLoader	Interface to load emoji metadata.
EmojiCompat.MetadataRepoLoaderCallback	Callback to inform EmojiCompat about the state of the metadata load.
EmojiEditText	EditText widget enhanced with emoji capability by using EmojiEditTextHelper.
EmojiEditTextHelper	Utility class to enhance custom EditText widgets with EmojiCompat.
EmojiExtractTextLayout	Layout that contains emoji compatibility enhanced ExtractEditText.
EmojiSpan	Base span class for the emoji replacement.
EmojiTextView	TextView widget enhanced with emoji capability by using EmojiTextViewHelper.
EmojiTextViewHelper	Utility class to enhance custom TextView widgets with EmojiCompat.
EmptyResultSetException	Thrown by Room when the query in a Single<T> DAO method needs to return a result but the returned result from the database is empty.
EncryptedFile	Class used to create and read encrypted files.
EncryptedFile.Builder	Builder class to configure EncryptedFile
EncryptedFile.FileEncryptionScheme	The encryption scheme to encrypt files.
EncryptedSharedPreferences	An implementation of SharedPreferences that encrypts keys and values.
EncryptedSharedPreferences.PrefKeyEncryptionScheme	The encryption scheme to encrypt keys.
EncryptedSharedPreferences.PrefValueEncryptionScheme	The encryption scheme to encrypt values.
Entity	Marks a class as an entity.
EnvironmentCompat	Helper for accessing features in Environment.
ErrorFragment	A fragment for displaying an error indication.
ErrorSupportFragment	A fragment for displaying an error indication.
EventInfo	Represents information associated with a logged event on SliceView.
ExifInterface	This is a class for reading and writing Exif tags in various image file formats.
ExistingPeriodicWorkPolicy	An enumeration of the conflict resolution policies available to unique PeriodicWorkRequests in case of a collision.
ExistingWorkPolicy	An enumeration of the conflict resolution policies available to unique OneTimeWorkRequests in case of a collision.
Experimental	Denotes that the annotated element is a marker of an experimental API.
Experimental.Level	Severity of the diagnostic that should be reported on usages of experimental API which did not explicitly accept the experimental aspect of that API either by using UseExperimental or by being annotated with the corresponding marker annotation.
ExperimentalCamera2Interop	Denotes that the annotated method uses the experimental methods which allow direct access to camera2 classes.
ExperimentalCameraFilter	Denotes that the annotated method uses an experimental API that customizes camera filters to select a specific camera.
ExperimentalCameraProviderConfiguration	Denotes that the annotated method uses an experimental path for configuring a camera provider.
ExperimentalCustomizableThreads	Denotes that the annotated method uses an experimental API that swaps the default threading implementation with a user-defined threading implementation.
ExperimentalGetImage	Denotes that the annotated method uses the experimental ImageProxy#getImage() method.
ExperimentalPagingApi	Marks experimental Paging APIs, which may have known issues that would likely be solved by a source-incompatible change in newer versions of the artifact that supplies it.
ExperimentalUseCaseGroup	Denotes that the annotated classes and methods uses the experimental feature which provides a grouping mechanism for UseCases.
ExperimentalUseCaseGroupLifecycle	Same as androidx.camera.core.ExperimentalUseCaseGroup.
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.
ExploreByTouchHelper	ExploreByTouchHelper is a utility class for implementing accessibility support in custom Views that represent a collection of View-like logical items.
ExtendableBuilder	Extendable builders are used to add externally defined options that can be passed to the implementation being built.
ExtensionCameraFilter	A filter that filters camera based on extender implementation.
ExtensionsErrorListener	Listener called when any extensions error occurs.
ExtensionsErrorListener.ExtensionsErrorCode	Types of error when extensions function is enabled.
ExtensionsManager	Provides interfaces for third party app developers to get capabilities info of extension functions.
ExtensionsManager.EffectMode	The effect mode options applied on the bound use cases
ExtensionsManager.ExtensionsAvailability
ExtensionWindowBackend	Default implementation of WindowBackend that uses a combination of platform APIs and device-dependent OEM extensions.
ExternalInput	Identifies parameters of an RemoteCallable that will be pulled from the caller of the callback.
ExtrasUtils	Utilities for inserting/retrieving data into/from textclassifier related results and intents.

F

FacetProvider	This is the query interface to supply optional features(aka facets) on an object without the need of letting the object to subclass or implement java interfaces.
FacetProviderAdapter	Optional interface that implemented by RecyclerView.Adapter to query FacetProvider for a given item view type within Adapter.
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.
FakeKeyedAppStatesReporter	A fake KeyedAppStatesReporter for testing.
FastOutLinearInInterpolator	Interpolator corresponding to android.R.interpolator#fast_out_linear_in.
FastOutSlowInInterpolator	Interpolator corresponding to android.R.interpolator#fast_out_slow_in.
FeatureFlagHolderBoundaryInterface	Boundary interface to be implemented by any type which is constructed on the support library side (such as callback classes).
Features	Class containing all the features the support library can support.
FileMediaItem	Structure for media item for a file.
FileMediaItem.Builder	This Builder class simplifies the creation of a FileMediaItem object.
FileProvider	FileProvider is a special subclass of ContentProvider that facilitates secure sharing of files associated with an app by creating a content://Uri for a file instead of a file:///Uri
FingerprintManagerCompat	A class that coordinates access to the fingerprint hardware.
FingerprintManagerCompat.AuthenticationCallback	Callback structure provided to FingerprintManagerCompat#authenticate(CryptoObject, * int, CancellationSignal, AuthenticationCallback, Handler).
FingerprintManagerCompat.AuthenticationResult	Container for callback data from FingerprintManagerCompat#authenticate(CryptoObject, * int, CancellationSignal, AuthenticationCallback, Handler).
FingerprintManagerCompat.CryptoObject	A wrapper class for the crypto objects supported by FingerprintManager.
FitWidthBitmapDrawable	Subclass of Drawable that can be used to draw a bitmap into a region.
FlingAnimation	Fling animation is an animation that continues an initial momentum (most often from gesture velocity) and gradually slows down.
FloatArrayEvaluator	This evaluator can be used to perform type interpolation between float[] values.
FloatEvaluator	This evaluator can be used to perform type interpolation between float values.
FloatingWindow	A marker interface for NavDestination subclasses that float above the view of other destinations (i.e.
FloatProperty	An implementation of android.util.Property to be used specifically with fields of type float.
FloatPropertyCompat	FloatPropertyCompat is an abstraction that can be used to represent a mutable float value that is held in a host object.
FloatRange	Denotes that the annotated element should be a float or double in the given range
FloatValueHolder	FloatValueHolder holds a float value.
FocusDelegate	Override methods in this class to provide application specific behaviors related to focusing item.
FocusHighlight	Interface for highlighting the item that has focus.
FocusHighlightHelper	Sets up the highlighting behavior when an item gains focus.
FocusMeteringAction	A configuration used to trigger a focus and/or metering action.
FocusMeteringAction.Builder	The builder used to create the FocusMeteringAction.
FocusMeteringResult	Result of the CameraControl#startFocusAndMetering(FocusMeteringAction).
FontRequest	Information about a font request that may be sent to a Font Provider.
FontRequestEmojiCompatConfig	EmojiCompat.Config implementation that asynchronously fetches the required font and the metadata using a FontRequest.
FontRequestEmojiCompatConfig.ExponentialBackoffRetryPolicy	A retry policy implementation that doubles the amount of time in between retries.
FontRequestEmojiCompatConfig.RetryPolicy	Retry policy used when the font provider is not ready to give the font file.
FontRes	Denotes that an integer parameter, field or method return value is expected to be a font resource reference (e.g.
FontsContractCompat	Utility class to deal with Font ContentProviders.
FontsContractCompat.Columns	Defines the constants used in a response from a Font Provider.
FontsContractCompat.FontFamilyResult	Object returned from fetchFonts.
FontsContractCompat.FontInfo	Object represent a font entry in the family returned from fetchFonts.
FontsContractCompat.FontRequestCallback	Interface used to receive asynchronously fetched typefaces.
ForegroundInfo	The information required when a ListenableWorker runs in the context of a foreground service.
ForegroundUpdater	Manages updating android.app.Notifications when a ListenableWorker transitions to running in the context of a foreground android.app.Service.
ForeignKey	Declares a foreign key on another Entity.
ForeignKey.Action	Constants definition for values that can be used in onDelete() and onUpdate().
FractionRes	Denotes that an integer parameter, field or method return value is expected to be a fraction resource reference.
Fragment	Static library support version of the framework's android.app.Fragment.
Fragment.InstantiationException	Thrown by FragmentFactory#instantiate(ClassLoader, String) when there is an instantiation failure.
Fragment.SavedState	State information that has been retrieved from a fragment instance through FragmentManager.saveFragmentInstanceState.
FragmentActivity	Base class for activities that want to use the support-based Fragments.
FragmentAnimationProvider	FragmentAnimationProvider supplies animations for use during a fragment's onCreateAnimator callback.
FragmentContainer	Callbacks to a Fragment's container.
FragmentContainerView	FragmentContainerView is a customized Layout designed specifically for Fragments.
FragmentController	Provides integration points with a FragmentManager for a fragment host.
FragmentFactory	Interface used to control the instantiation of Fragment instances.
FragmentHostCallback	Integration points with the Fragment host.
FragmentManager	Static library support version of the framework's android.app.FragmentManager.
FragmentManager.BackStackEntry	Representation of an entry on the fragment back stack, as created with FragmentTransaction.addToBackStack().
FragmentManager.FragmentLifecycleCallbacks	Callback interface for listening to fragment state changes that happen within a given FragmentManager.
FragmentManager.OnBackStackChangedListener	Interface to watch for changes to the back stack.
FragmentManagerNonConfig	FragmentManagerNonConfig stores the retained instance fragments across activity recreation events.
FragmentNavigator	Navigator that navigates through fragment transactions.
FragmentNavigator.Destination	NavDestination specific to FragmentNavigator
FragmentNavigator.Extras	Extras that can be passed to FragmentNavigator to enable Fragment specific behavior
FragmentNavigator.Extras.Builder	Builder for constructing new Extras instances.
FragmentNavigatorDestinationBuilder	DSL for constructing a new FragmentNavigator.Destination
FragmentOnAttachListener	Listener for receiving a callback immediately following Fragment#onAttach(Context).
FragmentPagerAdapter	Implementation of PagerAdapter that represents each page as a Fragment that is persistently kept in the fragment manager as long as the user can return to the page.
FragmentResultListener	Listener for handling fragment results.
FragmentResultOwner	A class that manages passing data between fragments.
FragmentScenario	FragmentScenario provides API to start and drive a Fragment's lifecycle state for testing.
FragmentScenario.FragmentAction	FragmentAction interface should be implemented by any class whose instances are intended to be executed by the main thread.
FragmentStateAdapter	Similar in behavior to FragmentStatePagerAdapter
FragmentStateAdapter.FragmentTransactionCallback	Callback interface for listening to fragment lifecycle changes that happen inside the adapter.
FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener	Callback returned by onFragmentPreAdded, onFragmentPreRemoved, onFragmentMaxLifecyclePreUpdated called after the operation ends.
FragmentStatePagerAdapter	Implementation of PagerAdapter that uses a Fragment to manage each page.
FragmentTabHost	Special TabHost that allows the use of Fragment objects for its tab content.
FragmentTransaction	Static library support version of the framework's android.app.FragmentTransaction.
FragmentViewHolder	ViewHolder implementation for handling Fragments.
FrameMetricsAggregator	This class can be used to record and return data about per-frame durations.
FrameworkSQLiteOpenHelperFactory	Implements SupportSQLiteOpenHelper.Factory using the SQLite implementation in the framework.
Fts3	Marks an Entity annotated class as a FTS3 entity.
Fts4	Marks an Entity annotated class as a FTS4 entity.
FtsOptions	Available option values that can be used with Fts3 & Fts4.
FtsOptions.MatchInfo
FtsOptions.Order
FullWidthDetailsOverviewRowPresenter	Renders a DetailsOverviewRow to display an overview of an item.
FullWidthDetailsOverviewRowPresenter.Listener	Listeners for events on ViewHolder.
FullWidthDetailsOverviewRowPresenter.ViewHolder	A ViewHolder for the DetailsOverviewRow.
FullWidthDetailsOverviewRowPresenter.ViewHolder.DetailsOverviewRowListener
FullWidthDetailsOverviewSharedElementHelper	Helper class to assist delayed shared element activity transition for view created by FullWidthDetailsOverviewRowPresenter.
Function	Represents a function.

G

GestureDetectorCompat	Detects various gestures and events using the supplied MotionEvents.
GnssStatusCompat	GnssStatus representation that works across all Android versions.
GnssStatusCompat.Callback	See GnssStatus.Callback.
GravityCompat	Compatibility shim for accessing newer functionality from android.view.Gravity.
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.
GridLayoutManager	A RecyclerView.LayoutManager implementations that lays out items in a grid.
GridLayoutManager.DefaultSpanSizeLookup	Default implementation for SpanSizeLookup.
GridLayoutManager.LayoutParams	LayoutParams used by GridLayoutManager.
GridLayoutManager.SpanSizeLookup	A helper class to provide the number of spans each item occupies.
GridRowBuilder	Builder to construct a grid row which may be added as a row to ListBuilder.
GridRowBuilder.CellBuilder	Builder to construct a cell.
GridRowBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
GuardedBy	Denotes that the annotated method or field can only be accessed when holding the referenced lock.
GuidanceStylist	GuidanceStylist is used within a androidx.leanback.app.GuidedStepFragment to display contextual information for the decision(s) required at that step.
GuidanceStylist.Guidance	A data class representing contextual information for a .
GuidedAction	A data class which represents an action within a .
GuidedAction.Builder	Builds a GuidedAction object.
GuidedAction.BuilderBase	Base builder class to build a GuidedAction object.
GuidedActionAutofillSupport	Interface for a custom EditText subclass to support autofill in androidx.leanback.app.GuidedStepSupportFragment.
GuidedActionAutofillSupport.OnAutofillListener	Listener for autofill event.
GuidedActionDiffCallback	DiffCallback used for GuidedActions, see .
GuidedActionEditText	A custom EditText that satisfies the IME key monitoring requirements of GuidedStepFragment.
GuidedActionsStylist	GuidedActionsStylist is used within a androidx.leanback.app.GuidedStepFragment to supply the right-side panel where users can take actions.
GuidedActionsStylist.ViewHolder	ViewHolder caches information about the action item layouts' subviews.
GuidedDatePickerAction	Subclass of GuidedAction that can choose a date.
GuidedDatePickerAction.Builder	Builder class to build a GuidedDatePickerAction.
GuidedDatePickerAction.BuilderBase	Base Builder class to build GuidedDatePickerAction.
GuidedStepFragment	A GuidedStepFragment is used to guide the user through a decision or series of decisions.
GuidedStepSupportFragment	A GuidedStepSupportFragment is used to guide the user through a decision or series of decisions.

H

HalfFloat	Denotes that the annotated element represents a half-precision floating point value.
HandlerCompat	Helper for accessing features in Handler.
HandlerExecutor	An adapter Executor that posts all executed tasks onto the given Handler.
HasDefaultViewModelProviderFactory	Interface that marks a ViewModelStoreOwner as having a default ViewModelProvider.Factory for use with ViewModelProvider#ViewModelProvider(ViewModelStoreOwner).
HdrImageCaptureExtender	Load the OEM extension implementation for HDR effect type.
HdrPreviewExtender	Load the OEM extension Preview implementation for HDR effect type.
HeaderBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
HeaderItem	A header item describes the metadata of a Row, such as a category of media items.
HeadersFragment	An fragment containing a list of row headers.
HeadersFragment.OnHeaderClickedListener	Interface definition for a callback to be invoked when a header item is clicked.
HeadersFragment.OnHeaderViewSelectedListener	Interface definition for a callback to be invoked when a header item is selected.
HeadersSupportFragment	An fragment containing a list of row headers.
HeadersSupportFragment.OnHeaderClickedListener	Interface definition for a callback to be invoked when a header item is clicked.
HeadersSupportFragment.OnHeaderViewSelectedListener	Interface definition for a callback to be invoked when a header item is selected.
HeartRating	A class for rating with a single degree of rating, "heart" vs "no heart".
HeifWriter	This class writes one or more still images (of the same dimensions) into a heif file.
HeifWriter.Builder	Builder class for constructing a HeifWriter object from specified parameters.
HiltViewModelFactory	View Model Provider Factory for the Hilt Extension.
HiltWorkerFactory	Worker Factory for the Hilt Extension
HintConstants	Contains all the officially supported autofill hint constants.
HoldingConnectionClient	A client which keeps the ServiceConnection to the IAdvertisingIdService.
HorizontalGridView	A android.view.ViewGroup that shows items in a horizontal scrolling list.
HorizontalHoverCardSwitcher	A helper class for showing a hover card view below a HorizontalGridView.
HtmlCompat	Backwards compatible version of Html.

I

IconCompat	Helper for accessing features in android.graphics.drawable.Icon.
ICUCompat
IdRes	Denotes that an integer parameter, field or method return value is expected to be an id resource reference (e.g.
Ignore	Ignores the marked element from Room's processing logic.
ImageAnalysis	A use case providing CPU accessible images for an app to perform image analysis on.
ImageAnalysis.Analyzer	Interface for analyzing images.
ImageAnalysis.Builder	Builder for a ImageAnalysis.
ImageCapture	A use case for taking a picture.
ImageCapture.Builder	Builder for an ImageCapture.
ImageCapture.Metadata	Holder class for metadata that will be saved with captured images.
ImageCapture.OnImageCapturedCallback	Callback for when an image capture has completed.
ImageCapture.OnImageSavedCallback	Listener containing callbacks for image file I/O events.
ImageCapture.OutputFileOptions	Options for saving newly captured image.
ImageCapture.OutputFileOptions.Builder	Builder class for OutputFileOptions.
ImageCapture.OutputFileResults	Info about the saved image file.
ImageCaptureException	An exception thrown to indicate an error has occurred during image capture or while saving the captured image.
ImageCaptureExtender	Class for using an OEM provided extension on image capture.
ImageCardView	A subclass of BaseCardView with an ImageView as its main region.
ImageInfo	Metadata for an image.
ImageProxy	An image proxy which has a similar interface as android.media.Image.
ImageProxy.PlaneProxy	A plane proxy which has an analogous interface as android.media.Image.Plane.
ImageViewCompat	Helper for accessing features in ImageView.
ImeKeyMonitor	Interface for an EditText subclass that can delegate calls to onKeyPreIme up to a registered listener.
ImeKeyMonitor.ImeKeyListener	Listener interface for key events intercepted pre-IME by edit text objects.
Index	Declares an index on an Entity.
InitializationException	InitializationException is thrown when a failure occurs during an initialization process.
Initializer	Initializers can be used to initialize libraries during app startup, without the need to use additional android.content.ContentProviders.
InlinePresentationBuilder	Helper class to create Slice for rendering into inline suggestions.
InlinePresentationRenderer	Helper class for rendering Slice as an Inline Suggestion.
InlineSuggestionsHostView	This class is a container for showing inline suggestions for cases where you want to ensure they appear only in a given area in your app.
InputConnectionCompat	Helper for accessing features in InputConnection introduced after API level 13 in a backwards compatible fashion.
InputConnectionCompat.OnCommitContentListener	Listener for commitContent method call, in a backwards compatible fashion.
InputContentInfoCompat	Helper for accessing features in InputContentInfo introduced after API level 13 in a backwards compatible fashion.
InputDeviceCompat	Helper class for accessing values in android.view.InputDevice.
InputMerger	An abstract class that allows the user to define how to merge a list of inputs to a ListenableWorker.
InputMergerFactory	A factory object that creates InputMerger instances.
InputRangeBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
Insert	Marks a method in a Dao annotated class as an insert method.
Insets	An Insets instance holds four integer offsets which describe changes to the four edges of a Rectangle.
InspectableProperty	Denotes that the annotated method is the getter for a resources-backed property that should be shown in Android Studio's inspection tools.
InspectableProperty.EnumEntry	One entry in an enumeration packed into a primitive {int}.
InspectableProperty.FlagEntry	One flag value of many that may be packed into a primitive {int}.
InspectableProperty.ValueType	The type of value packed into a primitive {int}.
InstantTaskExecutorRule	A JUnit Test Rule that swaps the background executor used by the Architecture Components with a different one which executes each task synchronously.
IntArrayEvaluator	This evaluator can be used to perform type interpolation between int[] values.
IntDef	Denotes that the annotated element of integer type, represents a logical type and that its value should be one of the explicitly named constants.
IntegerRes	Denotes that an integer parameter, field or method return value is expected to be an integer resource reference (e.g.
IntentCompat	Helper for accessing features in android.content.Intent.
IntentSenderRequest	A request for a androidx.activity.result.contract.ActivityResultContracts.StartIntentSenderForResult Activity Contract.
IntentSenderRequest.Builder	A builder for constructing IntentSenderRequest instances.
Interpolator	An interpolator defines the rate of change of an animation.
InterpolatorRes	Denotes that an integer parameter, field or method return value is expected to be an interpolator resource reference (e.g.
IntEvaluator	This evaluator can be used to perform type interpolation between int values.
IntProperty	An implementation of android.util.Property to be used specifically with fields of type int.
IntRange	Denotes that the annotated element should be an int or long in the given range
InvalidationTracker	InvalidationTracker keeps a list of tables modified by queries and notifies its callbacks about these tables.
InvalidationTracker.Observer	An observer that can listen for changes in the database.
IsomorphicObjectBoundaryInterface	Boundary interface to be implemented by any type that needs to maintain an isomorphism (i.e. a 1:1 mapping) between the support library objects and their corresponding internal WebView objects.
ItemAlignmentFacet	Optional facet provided by RecyclerView.Adapter or RecyclerView.ViewHolder for use in HorizontalGridView and VerticalGridView.
ItemAlignmentFacet.ItemAlignmentDef	Definition of an alignment position under a view.
ItemBridgeAdapter	Bridge from Presenter to RecyclerView.Adapter.
ItemBridgeAdapter.AdapterListener	Interface for listening to ViewHolder operations.
ItemBridgeAdapter.ViewHolder	ViewHolder for the ItemBridgeAdapter.
ItemBridgeAdapter.Wrapper	Interface for wrapping a view created by a Presenter into another view.
ItemBridgeAdapterShadowOverlayWrapper	A wrapper class working with ItemBridgeAdapter to wrap item view in a ShadowOverlayContainer.
ItemDetailsLookup	The Selection library calls getItemDetails(MotionEvent) when it needs access to information about the area and/or ItemDetails under a MotionEvent.
ItemDetailsLookup.ItemDetails	An ItemDetails implementation provides the selection library with access to information about a specific RecyclerView item.
ItemKeyedDataSource	Incremental data loader for paging keyed content, where loaded content uses previously loaded items as input to future loads.
ItemKeyedDataSource.LoadCallback	Callback for ItemKeyedDataSource loadBefore and loadAfter to return data.
ItemKeyedDataSource.LoadInitialCallback	Callback for loadInitial to return data and, optionally, position/count information.
ItemKeyedDataSource.LoadInitialParams	Holder object for inputs to loadInitial.
ItemKeyedDataSource.LoadParams	Holder object for inputs to loadBefore and loadAfter.
ItemKeyProvider	Provides selection library access to stable selection keys identifying items presented by a RecyclerView instance.
ItemKeyProvider.Scope
ItemTouchHelper	This is a utility class to add swipe to dismiss and drag & drop support to RecyclerView.
ItemTouchHelper.Callback	This class is the contract between ItemTouchHelper and your application.
ItemTouchHelper.SimpleCallback	A simple wrapper to the default Callback which you can construct with drag and swipe directions and this class will handle the flag callbacks.
ItemTouchHelper.ViewDropHandler	An interface which can be implemented by LayoutManager for better integration with ItemTouchHelper.
ItemTouchUIUtil	Utility class for ItemTouchHelper which handles item transformations for different API versions.

J

JavaScriptReplyProxy	This class represents the JavaScript object injected by WebViewCompat#addWebMessageListener(android.webkit.WebView, String, Set, * WebViewCompat.WebMessageListener).
JobIntentService	Helper for processing work that has been enqueued for a job/service.
JsReplyProxyBoundaryInterface	Boundary interface for org.
Junction	Declares a junction to be used for joining a relationship.

K

Keep	Denotes that the annotated element should not be removed when the code is minified at build time.
KeyedAppState	A keyed app state to be sent to an EMM (enterprise mobility management), with the intention that it is displayed to the management organization.
KeyedAppState.KeyedAppStateBuilder	The builder for KeyedAppState.
KeyedAppStatesReporter	A reporter of keyed app states to enable communication between an app and an EMM (enterprise mobility management).
KeyedAppStatesService	Base service for receiving app states in Device Owner and Profile Owner apps.
Keyframe	This class holds a time/value pair for an animation.

L

LayoutInflaterCompat	Helper for accessing features in LayoutInflater.
LayoutInflaterFactory	Used with LayoutInflaterCompat.setFactory().
LayoutRes	Denotes that an integer parameter, field or method return value is expected to be a layout resource reference (e.g.
LeanbackEditTextPreferenceDialogFragmentCompat	Implemented a dialog to input text.
LeanbackListPreferenceDialogFragment
LeanbackListPreferenceDialogFragment.AdapterMulti	Adapter for multiple choices.
LeanbackListPreferenceDialogFragment.AdapterSingle	Adapter for single choice.
LeanbackListPreferenceDialogFragment.ViewHolder	ViewHolder of the List.
LeanbackListPreferenceDialogFragment.ViewHolder.OnItemClickListener
LeanbackListPreferenceDialogFragmentCompat	Implemented a dialog to show ListPreference or MultiSelectListPreference.
LeanbackListPreferenceDialogFragmentCompat.ViewHolder	ViewHolder for each Item in the List.
LeanbackPreferenceDialogFragment
LeanbackPreferenceDialogFragmentCompat	A fragment that shows DialogPreference, for example or androidx.preference.MultiSelectListPreference.
LeanbackPreferenceFragment	This fragment provides a fully decorated leanback-style preference fragment, including a list background and header.
LeanbackPreferenceFragmentCompat	This fragment provides a fully decorated leanback-style preference fragment, including a list background and header.
LeanbackSettingsFragment	This fragment provides a container for displaying a LeanbackPreferenceFragment
LeanbackSettingsFragmentCompat	This fragment provides a container for displaying a LeanbackPreferenceFragmentCompat
LibraryResult	Result class to be used with ListenableFuture for asynchronous calls between MediaLibraryService.MediaLibrarySession and MediaBrowser.
Lifecycle	Defines an object that has an Android Lifecycle.
Lifecycle.Event
Lifecycle.State	Lifecycle states.
LifecycleCoroutineScope	CoroutineScope tied to a Lifecycle and Dispatchers.Main.immediate
LifecycleEventObserver	Class that can receive any lifecycle change and dispatch it to the receiver.
LifecycleObserver	Marks a class as a LifecycleObserver.
LifecycleOwner	A class that has an Android lifecycle.
LifecycleRegistry	An implementation of Lifecycle that can handle multiple observers.
LifecycleRegistryOwner
LifecycleService	A Service that is also a LifecycleOwner.
LinearInterpolator	An interpolator where the rate of change is constant
LinearLayoutCompat	A Layout that arranges its children in a single column or a single row.
LinearLayoutCompat.LayoutParams	Per-child layout information associated with ViewLinearLayout.
LinearLayoutManager	A RecyclerView.LayoutManager implementation which provides similar functionality to android.widget.ListView.
LinearLayoutManager.LayoutChunkResult
LinearOutSlowInInterpolator	Interpolator corresponding to android.R.interpolator#linear_out_slow_in.
LinearSmoothScroller	RecyclerView.SmoothScroller implementation which uses a LinearInterpolator until the target position becomes a child of the RecyclerView and then uses a DecelerateInterpolator to slowly approach to target position.
LinearSnapHelper	Implementation of the SnapHelper supporting snapping in either vertical or horizontal orientation.
LinkifyCompat	LinkifyCompat brings in Linkify improvements for URLs and email addresses to older API levels.
ListAdapter	RecyclerView.Adapter base class for presenting List data in a RecyclerView, including computing diffs between Lists on a background thread.
ListBuilder	Builder for constructing slices composed of rows of content.
ListBuilder.HeaderBuilder	Builder to construct a header row.
ListBuilder.InputRangeBuilder	Builder to construct a input range row.
ListBuilder.RangeBuilder	Builder to construct a range row which can be added to a ListBuilder.
ListBuilder.RowBuilder	Builder to construct a row.
ListBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
ListenableWorker	A class that can perform work asynchronously in WorkManager.
ListenableWorker.Result	The result of a ListenableWorker's computation.
ListFragment	Static library support version of the framework's android.app.ListFragment.
ListPopupWindow	Static library support version of the framework's android.widget.ListPopupWindow.
ListPopupWindowCompat	Helper for accessing features in ListPopupWindow.
ListPreference	A Preference that displays a list of entries as a dialog.
ListPreference.SimpleSummaryProvider	A simple androidx.preference.Preference.SummaryProvider implementation for a ListPreference.
ListPreferenceDialogFragment
ListPreferenceDialogFragmentCompat
ListRow	A Row composed of a optional HeaderItem, and an ObjectAdapter describing the items in the list.
ListRowHoverCardView	ListRowHoverCardView contains a title and description.
ListRowPresenter	ListRowPresenter renders ListRow using a HorizontalGridView hosted in a ListRowView.
ListRowPresenter.SelectItemViewHolderTask	A task on the ListRowPresenter.
ListRowPresenter.ViewHolder	ViewHolder for the ListRowPresenter.
ListRowView	ListRowView is a android.view.ViewGroup which always contains a HorizontalGridView, and may optionally include a hover card.
ListUpdateCallback	An interface that can receive Update operations that are applied to a list.
ListViewAutoScrollHelper	An implementation of AutoScrollHelper that knows how to scroll through a ListView.
ListViewCompat	Helper for accessing features in ListView
LiveData	LiveData is a data holder class that can be observed within a given lifecycle.
LiveDataReactiveStreams	Adapts LiveData input and output to the ReactiveStreams spec.
LiveDataScope	Interface that allows controlling a LiveData from a coroutine block.
LivePagedListBuilder	Builder for LiveData<PagedList> for Java users, given a androidx.paging.DataSource.Factory and a androidx.paging.PagedList.Config.
Loader	Static library support version of the framework's android.content.Loader.
Loader.ForceLoadContentObserver	An implementation of a ContentObserver that takes care of connecting it to the Loader to have the loader re-load its data when the observer is told it has changed.
Loader.OnLoadCanceledListener	Interface that is implemented to discover when a Loader has been canceled before it finished loading its data.
Loader.OnLoadCompleteListener	Interface that is implemented to discover when a Loader has finished loading its data.
LoaderManager	Static library support version of the framework's android.app.LoaderManager.
LoaderManager.LoaderCallbacks	Callback interface for a client to interact with the manager.
LoaderQueryRunner	A ContentPager.QueryRunner that executes queries using a LoaderManager.
LoadState	LoadState of a PagedList load - associated with a LoadType
LoadState.Error	Loading hit an error.
LoadState.Loading	Loading is in progress.
LoadState.NotLoading	Indicates the PagingData is not currently loading, and no error currently observed.
LoadStateAdapter	Adapter for displaying a RecyclerView item based on LoadState, such as a loading spinner, or a retry error button.
LoadStates	Collection of pagination LoadStates - refresh, prepend, and append.
LoadType	Type of load a PagingData can trigger a PagingSource to perform.
LocalBroadcastManager	Helper to register for and send broadcasts of Intents to local objects within your process.
LocaleListCompat	Helper for accessing features in LocaleList.
LocationManagerCompat	Helper for accessing features in LocationManager.
LocusIdCompat	An identifier for an unique state (locus) in the application.
LongDef	Denotes that the annotated long element represents a logical type and that its value should be one of the explicitly named constants.
LongSparseArray	SparseArray mapping longs to Objects.
LruCache	Static library version of android.util.LruCache.

M

MainThread	Denotes that the annotated method should only be called on the main thread.
MarginLayoutParamsCompat	Helper for accessing API features in MarginLayoutParams in a backwards compatible way.
MarginPageTransformer	Adds space between pages via the ViewPager2.PageTransformer API.
MasterKey	Wrapper for a master key used in the library.
MasterKey.Builder	Builder for generating a MasterKey.
MasterKey.KeyScheme	Algorithm/Cipher choices used for the master key.
MasterKeys	Convenient methods to create and obtain master keys in Android Keystore.
MathUtils	A utility class providing functions useful for common mathematical operations.
MbmsHelper	Helper methods for working with the android.telephony.mbms cell-broadcast APIs.
MediaBrowser	Browses media content offered by a MediaLibraryService.
MediaBrowser.BrowserCallback	Callback to listen events from MediaLibraryService.
MediaBrowser.Builder	Builder for MediaBrowser.
MediaBrowserCompat	Browses media content offered by a MediaBrowserServiceCompat.
MediaBrowserCompat.ConnectionCallback	Callbacks for connection related events.
MediaBrowserCompat.CustomActionCallback	Callback for receiving the result of sendCustomAction.
MediaBrowserCompat.ItemCallback	Callback for receiving the result of getItem.
MediaBrowserCompat.MediaItem	A class with information on a single media item for use in browsing/searching media.
MediaBrowserCompat.SearchCallback	Callback for receiving the result of search.
MediaBrowserCompat.SubscriptionCallback	Callbacks for subscription related events.
MediaBrowserServiceCompat	Base class for media browse services.
MediaBrowserServiceCompat.BrowserRoot	Contains information that the browser service needs to send to the client when first connected.
MediaBrowserServiceCompat.Result	Completion handler for asynchronous callback methods in MediaBrowserServiceCompat.
MediaButtonReceiver	A media button receiver receives and helps translate hardware media playback buttons, such as those found on wired and wireless headsets, into the appropriate callbacks in your app.
MediaConstants	Media constants for sharing constants between media provider and consumer apps
MediaConstants	Media constants for sharing constants between media provider and consumer apps
MediaControlIntent	Constants for media control intents.
MediaController	Allows an app to interact with an active or a MediaSessionService which would provide .
MediaController.Builder	Builder for MediaController.
MediaController.ControllerCallback	Interface for listening to change in activeness of the MediaSession.
MediaController.PlaybackInfo	Holds information about the way volume is handled for this session.
MediaControllerAdapter	A helper class for implementing a adapter layer for MediaControllerCompat.
MediaControllerCompat	Allows an app to interact with an ongoing media session.
MediaControllerCompat.Callback	Callback for receiving updates on from the session.
MediaControllerCompat.PlaybackInfo	Holds information about the way volume is handled for this session.
MediaControllerCompat.TransportControls	Interface for controlling media playback on a session.
MediaControllerGlue	A helper class for implementing a glue layer for MediaControllerCompat.
MediaControlView	A View that contains the controls for MediaController or SessionPlayer.
MediaControlView.OnFullScreenListener	Interface definition of a callback to be invoked to inform the fullscreen mode is changed.
MediaDescriptionCompat	A simple set of metadata for a media item suitable for display.
MediaDescriptionCompat.Builder	Builder for MediaDescriptionCompat objects.
MediaItem	A class with information on a single media item with the metadata information.
MediaItem.Builder	Builder for MediaItem.
MediaItemMetadata	Constants for specifying metadata about a media item as a Bundle.
MediaItemStatus	Describes the playback status of a media item.
MediaItemStatus.Builder	Builder for media item status objects.
MediaLibraryService	Base class for media library services, which is the service containing MediaLibrarySession.
MediaLibraryService.LibraryParams	Contains information that the library service needs to send to the client.
MediaLibraryService.LibraryParams.Builder	Builds a LibraryParams.
MediaLibraryService.MediaLibrarySession	Session for the MediaLibraryService.
MediaLibraryService.MediaLibrarySession.Builder	Builder for MediaLibrarySession.
MediaLibraryService.MediaLibrarySession.MediaLibrarySessionCallback	Callback for the MediaLibrarySession.
MediaMetadata	Contains metadata about an item, such as the title, artist, etc.
MediaMetadata.Builder	Use to build MediaMetadatax objects.
MediaMetadataCompat	Contains metadata about an item, such as the title, artist, etc.
MediaMetadataCompat.Builder	Use to build MediaMetadata objects.
MediaPlayer	A media player which plays MediaItems.
MediaPlayer.PlayerCallback	Interface definition for callbacks to be invoked when the player has the corresponding events.
MediaPlayer.TrackInfo	Class for the player to return each audio/video/subtitle track's metadata.
MediaPlayerAdapter	This implementation extends the PlayerAdapter with a MediaPlayer.
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	The media route button allows the user to select routes and to control the currently selected route.
MediaRouteChooserDialog	This class implements the route chooser dialog for MediaRouter.
MediaRouteChooserDialogFragment	Media route chooser dialog fragment.
MediaRouteControllerDialog	This class implements the route controller dialog for MediaRouter.
MediaRouteControllerDialogFragment	Media route controller dialog fragment.
MediaRouteDescriptor	Describes the properties of a route.
MediaRouteDescriptor.Builder	Builder for media route descriptors.
MediaRouteDialogFactory	The media route dialog factory is responsible for creating the media route chooser and controller dialogs as needed.
MediaRouteDiscoveryFragment	Media route discovery fragment.
MediaRouteDiscoveryRequest	Describes the kinds of routes that the media router would like to discover and whether to perform active scanning.
MediaRouteProvider	Media route providers are used to publish additional media routes for use within an application.
MediaRouteProvider.Callback	Callback which is invoked when route information becomes available or changes.
MediaRouteProvider.DynamicGroupRouteController	Provides control over a dynamic group route.
MediaRouteProvider.DynamicGroupRouteController.DynamicRouteDescriptor	Contains a route, its selection state and its capabilities.
MediaRouteProvider.DynamicGroupRouteController.DynamicRouteDescriptor.Builder	Builder for DynamicRouteDescriptor
MediaRouteProvider.ProviderMetadata	Describes properties of the route provider's implementation.
MediaRouteProvider.RouteController	Provides control over a particular route.
MediaRouteProviderDescriptor	Describes the state of a media route provider and the routes that it publishes.
MediaRouteProviderDescriptor.Builder	Builder for MediaRouteProviderDescriptor.
MediaRouteProviderService	Base class for media route provider services.
MediaRouter	MediaRouter allows applications to control the routing of media channels and streams from the current device to external speakers and destination devices.
MediaRouter.Callback	Interface for receiving events about media routing changes.
MediaRouter.ControlRequestCallback	Callback which is invoked with the result of a media control request.
MediaRouter.ProviderInfo	Provides information about a media route provider.
MediaRouter.RouteInfo	Provides information about a media route.
MediaRouteSelector	Describes the capabilities of routes that applications would like to discover and use.
MediaRouteSelector.Builder	Builder for media route selectors.
MediaSession	Allows a media app to expose its transport controls and playback information in a process to other processes including the Android framework and other apps.
MediaSession.Builder	Builder for MediaSession.
MediaSession.CommandButton	Button for a SessionCommand that will be shown by the controller.
MediaSession.CommandButton.Builder	Builder for CommandButton.
MediaSession.ControllerInfo	Information of a controller.
MediaSession.SessionCallback	Callback to be called for all incoming commands from MediaControllers.
MediaSessionCompat	Allows interaction with media controllers, volume keys, media buttons, and transport controls.
MediaSessionCompat.Callback	Receives transport controls, media buttons, and commands from controllers and the system.
MediaSessionCompat.OnActiveChangeListener
MediaSessionCompat.QueueItem	A single item that is part of the play queue.
MediaSessionCompat.Token	Represents an ongoing session.
MediaSessionManager	Provides support for interacting with media sessions that applications have published to express their ongoing media playback state.
MediaSessionManager	Provides support for interacting with media sessions that applications have published in order to express their ongoing media playback state.
MediaSessionManager.RemoteUserInfo	Information of a remote user of MediaSessionCompat or MediaBrowserServiceCompat.
MediaSessionService	Base class for media session services, which is the service containing MediaSession.
MediaSessionService.MediaNotification	Returned by onUpdateNotification(MediaSession) for making session service foreground service to keep playback running in the background.
MediaSessionStatus	Describes the playback status of a media session.
MediaSessionStatus.Builder	Builder for media session status objects.
MediaTimestamp	An immutable object that represents the linear correlation between the media time and the system time.
MediatorLiveData	LiveData subclass which may observe other LiveData objects and react on OnChanged events from them.
MenuCompat	Helper for accessing features in android.view.Menu.
MenuItemCompat	Helper for accessing features in android.view.MenuItem.
MenuItemCompat.OnActionExpandListener	Interface definition for a callback to be invoked when a menu item marked with is expanded or collapsed.
MenuRes	Denotes that an integer parameter, field or method return value is expected to be a menu resource reference.
MessageCompat	Helper for accessing features in Message.
MetadataConstants	Constants for android wear apps which are related to manifest meta-data.
MetadataRepo	Class to hold the emoji metadata required to process and draw emojis.
MeteringPoint	A is used to specify a region which can then be converted to sensor coordinate system for focus and metering purpose.
MeteringPointFactory	A factory to create a MeteringPoint.
Migration	Base class for a database migration.
MigrationTestHelper	A class that can be used in your Instrumentation tests that can create the database in an older schema.
MimeTypeFilter	Provides utility methods for matching MIME type filters used in ContentProvider.
MotionEventCompat	Helper for accessing features in MotionEvent.
MultiActionsProvider	An interface implemented by the user if they wish to provide actions for a media item row to be displayed by an AbstractMediaItemPresenter.
MultiActionsProvider.MultiAction	MultiAction represents an action that can have multiple states.
MultiSelectListPreference	A Preference that displays a list of entries as a dialog.
MultiSelectListPreferenceDialogFragment
MultiSelectListPreferenceDialogFragmentCompat
MutableLiveData	LiveData which publicly exposes setValue(T) and postValue(T) method.
MutableLoadStateCollection	TODO: Remove this once PageEvent.LoadStateUpdate contained CombinedLoadStates.
MutableSelection	Subclass of Selection exposing public support for mutating the underlying selection data.

N

NavAction	Navigation actions provide a level of indirection between your navigation code and the underlying destinations.
NavActionBuilder	DSL for building a NavAction.
NavArgs	An interface marking generated Args classes.
NavArgsLazy	An implementation of Lazy used by android.app.Activity.navArgs and androidx.fragment.app.Fragment.navArgs.
NavArgument	NavArgument denotes an argument that is supported by a NavDestination.
NavArgument.Builder	A builder for constructing NavArgument instances.
NavArgumentBuilder	DSL for constructing a new NavArgument
NavBackStackEntry	Representation of an entry in the back stack of a NavController.
NavController	NavController manages app navigation within a NavHost.
NavController.OnDestinationChangedListener	OnDestinationChangedListener receives a callback when the getCurrentDestination() or its arguments change.
NavDeepLink	NavDeepLink encapsulates the parsing and matching of a navigation deep link.
NavDeepLink.Builder	A builder for constructing NavDeepLink instances.
NavDeepLinkBuilder	Class used to construct deep links to a particular destination in a NavGraph.
NavDeepLinkDsl
NavDeepLinkDslBuilder	DSL for constructing a new NavDeepLink
NavDeepLinkRequest	A request for a deep link in a NavDestination.
NavDeepLinkRequest.Builder	A builder for constructing NavDeepLinkRequest instances.
NavDestination	NavDestination represents one node within an overall navigation graph.
NavDestination.ClassType	This optional annotation allows tooling to offer auto-complete for the android:name attribute.
NavDestinationBuilder	DSL for constructing a new NavDestination
NavDestinationDsl
NavDirections	An interface that describes a navigation operation: action's id and arguments
NavGraph	NavGraph is a collection of NavDestination nodes fetchable by ID.
NavGraphBuilder	DSL for constructing a new NavGraph
NavGraphNavigator	A Navigator built specifically for NavGraph elements.
NavHost	A host is a single context or container for navigation via a NavController.
NavHostController	Subclass of NavController that offers additional APIs for use by a NavHost to connect the NavController to external dependencies.
NavHostFragment	NavHostFragment provides an area within your layout for self-contained navigation to occur.
Navigation	Entry point for navigation operations.
NavigationRes	Denotes that an integer parameter, field or method return value is expected to be a navigation resource reference (e.g.
NavigationUI	Class which hooks up elements typically in the 'chrome' of your application such as global navigation patterns like a navigation drawer or bottom nav bar with your NavController.
Navigator	Navigator defines a mechanism for navigating within an app.
Navigator.Extras	Interface indicating that this class should be passed to its respective Navigator to enable Navigator specific behavior.
Navigator.Name	This annotation should be added to each Navigator subclass to denote the default name used to register the Navigator with a NavigatorProvider.
NavigatorProvider	A NavigationProvider stores a set of Navigators that are valid ways to navigate to a destination.
NavInflater	Class which translates a navigation XML file into a NavGraph
NavOptions	NavOptions stores special options for navigate actions
NavOptions.Builder	Builder for constructing new instances of NavOptions.
NavOptionsBuilder	DSL for constructing a new NavOptions
NavOptionsDsl
NavType	NavType denotes the type that can be used in a NavArgument.
NavType.EnumType	EnumType is used for NavArguments holding enum values.
NavType.ParcelableArrayType	ParcelableArrayType is used for NavArguments which hold arrays of Parcelables.
NavType.ParcelableType	ParcelableType is used for passing Parcelables in NavArguments.
NavType.SerializableArrayType	SerializableArrayType is used for NavArguments that hold arrays of Serializables.
NavType.SerializableType	SerializableType is used for Serializable NavArguments.
NavUtils	NavUtils provides helper functionality for applications implementing recommended Android UI navigation patterns.
NestedScrollingChild	This interface should be implemented by View subclasses that wish to support dispatching nested scrolling operations to a cooperating parent ViewGroup.
NestedScrollingChild2	This interface should be implemented by View subclasses that wish to support dispatching nested scrolling operations to a cooperating parent ViewGroup.
NestedScrollingChild3	This interface should be implemented by View subclasses that wish to support dispatching nested scrolling operations to a cooperating parent ViewGroup.
NestedScrollingChildHelper	Helper class for implementing nested scrolling child views compatible with Android platform versions earlier than Android 5.
NestedScrollingParent	This interface should be implemented by ViewGroup subclasses that wish to support scrolling operations delegated by a nested child view.
NestedScrollingParent2	This interface should be implemented by ViewGroup subclasses that wish to support scrolling operations delegated by a nested child view.
NestedScrollingParent3	This interface should be implemented by ViewGroup subclasses that wish to support scrolling operations delegated by a nested child view.
NestedScrollingParentHelper	Helper class for implementing nested scrolling parent views compatible with Android platform versions earlier than Android 5.
NestedScrollView	NestedScrollView is just like android.widget.ScrollView, but it supports acting as both a nested scrolling parent and child on both new and old versions of Android.
NestedScrollView.OnScrollChangeListener	Interface definition for a callback to be invoked when the scroll X or Y positions of a view change.
NetworkType	An enumeration of various network types that can be used as Constraints for work.
NightImageCaptureExtender	Load the OEM extension implementation for night effect type.
NightPreviewExtender	Load the OEM extension Preview implementation for night effect type.
NonNull	Denotes that a parameter, field or method return value can never be null.
NotificationCompat	Helper for accessing features in android.app.Notification.
NotificationCompat	Class containing media specfic styles that you can use with androidx.core.app.NotificationCompat.Builder#setStyle.
NotificationCompat.Action	Structure to encapsulate a named action that can be shown as part of this notification.
NotificationCompat.Action.Builder	Builder class for Action objects.
NotificationCompat.Action.Extender	Extender interface for use with Builder#extend.
NotificationCompat.Action.SemanticAction	Provides meaning to an Action that hints at what the associated PendingIntent will do.
NotificationCompat.Action.WearableExtender	Wearable extender for notification actions.
NotificationCompat.BigPictureStyle	Helper class for generating large-format notifications that include a large image attachment.
NotificationCompat.BigTextStyle	Helper class for generating large-format notifications that include a lot of text.
NotificationCompat.BubbleMetadata	Encapsulates the information needed to display a notification as a bubble.
NotificationCompat.BubbleMetadata.Builder	Builder to construct a BubbleMetadata object.
NotificationCompat.Builder	Builder class for NotificationCompat objects.
NotificationCompat.CarExtender	Helper class to add Android Auto extensions to notifications.
NotificationCompat.CarExtender.UnreadConversation	A class which holds the unread messages from a conversation.
NotificationCompat.CarExtender.UnreadConversation.Builder	Builder class for CarExtender.UnreadConversation objects.
NotificationCompat.DecoratedCustomViewStyle	Notification style for custom views that are decorated by the system.
NotificationCompat.DecoratedMediaCustomViewStyle	Notification style for media custom views that are decorated by the system.
NotificationCompat.Extender	Extender interface for use with Builder#extend.
NotificationCompat.InboxStyle	Helper class for generating large-format notifications that include a list of (up to 5) strings.
NotificationCompat.MediaStyle	Notification style for media playback notifications.
NotificationCompat.MessagingStyle	Helper class for generating large-format notifications that include multiple back-and-forth messages of varying types between any number of people.
NotificationCompat.MessagingStyle.Message
NotificationCompat.Style	An object that can apply a rich notification style to a Notification.Builder object.
NotificationCompat.WearableExtender	Helper class to add wearable extensions to notifications.
NotificationCompatExtras	Well-known extras used by NotificationCompat for backwards compatibility.
NotificationCompatSideChannelService	Abstract service to receive side channel notifications sent from androidx.core.app.NotificationManagerCompat.
NotificationManagerCompat	Compatibility library for NotificationManager with fallbacks for older platforms.
Nullable	Denotes that a parameter, field or method return value can be null.

O

ObjectAdapter	Base class adapter to be used in leanback activities.
ObjectAdapter.DataObserver	A DataObserver can be notified when an ObjectAdapter's underlying data changes.
ObjectAnimator	This subclass of ValueAnimator provides support for animating properties on target objects.
ObjectsCompat	This class consists of static utility methods for operating on objects.
Observer	A simple callback that can receive from LiveData.
OnActionClickedListener	Interface for receiving notification when an Action is clicked.
OnApplyWindowInsetsListener	Listener for applying window insets on a view in a custom way.
OnBackPressedCallback	Class for handling OnBackPressedDispatcher#onBackPressed() callbacks without strongly coupling that implementation to a subclass of ComponentActivity.
OnBackPressedDispatcher	Dispatcher that can be used to register OnBackPressedCallback instances for handling the ComponentActivity#onBackPressed() callback via composition.
OnBackPressedDispatcherOwner	A class that has an OnBackPressedDispatcher that allows you to register a OnBackPressedCallback for handling the system back button.
OnboardingFragment	An OnboardingFragment provides a common and simple way to build onboarding screen for applications.
OnboardingSupportFragment	An OnboardingSupportFragment provides a common and simple way to build onboarding screen for applications.
OnChildLaidOutListener	Interface for receiving notification when a child of this ViewGroup has been laid out.
OnChildSelectedListener	Interface for receiving notification when a child of this ViewGroup has been selected.
OnChildViewHolderSelectedListener	Interface for receiving notification when a child of this ViewGroup has been selected.
OnConflictStrategy	Set of conflict handling strategies for various Dao methods.
OnContextClickListener	Register an OnContextClickListener to be notified when a context click occurs.
OnDragInitiatedListener	Register an OnDragInitiatedListener to be notified when user intent to perform drag and drop operations on an item or items has been detected.
OneShotPreDrawListener	An OnPreDrawListener that will remove itself after one OnPreDraw call.
OneTimeWorkRequest	A WorkRequest for non-repeating work.
OneTimeWorkRequest.Builder	Builder for OneTimeWorkRequests.
OnItemActivatedListener	Register an OnItemActivatedListener to be notified when an item is activated (tapped or double clicked).
OnItemViewC