Class Index

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.
AbstractResolvableFuture	An AndroidX version of Guava's AbstractFuture.
AbstractSavedStateVMFactory	Skeleton of androidx.
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.
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
ActionBarDrawerToggle.Delegate
ActionBarDrawerToggle.Delegate
ActionBarDrawerToggle.DelegateProvider	Allows an implementing Activity to return an ActionBarDrawerToggle.Delegate to use with ActionBarDrawerToggle.
ActionBarDrawerToggle.DelegateProvider	Allows an implementing Activity to return an ActionBarDrawerToggle.Delegate to use with ActionBarDrawerToggle.
ActionListItem	Class to build a list item that has up to two actions.
ActionListItem.ViewHolder	Holds the children views of ActionListItem.
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	Helper for accessing features in android.app.Activity in a backwards compatible fashion.
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.
AdapterListUpdateCallback	ListUpdateCallback that dispatches update events to the given adapter.
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
AlphaJumpAdapter	An interface that you can implement on your Adapter to enable support for Alpha-Jump.
AlphaJumpBucket	A bucket represents a "button" in the alpha-jump menu.
AlphaJumpBucketer	A helper class for building the list of buckets for alpha jump.
AlphaJumpBucketer.Bucket	A basic implementation of AlphaJumpBucket.
AlphaJumpOverlayView	This view shows a grid of alphabetic letters that you can tap on to advance a list to the beginning of that list.
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.
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 .
AnimatorRes	Denotes that an integer parameter, field or method return value is expected to be an animator resource reference (e.g.
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.
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 use the support library action bar features.
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.
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 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.
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 responsible for manually inflating our tinted widgets.
AppComponentFactory	Version of android.app.AppComponentFactory that works with androidx libraries.
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.
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.
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 PagedList into a RecyclerView.Adapter.
AsyncPagedListDiffer.PagedListListener	Listener for when the current PagedList is updated.
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 creating a backup file until a 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.
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.OnMotionInterceptListener	Listener for intercepting generic motion dispatch events.
BaseGridView.OnTouchInterceptListener	Listener for intercepting touch dispatch events.
BaseGridView.OnUnhandledKeyListener
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.
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.
BinderThread	Denotes that the annotated method should only be called on the binder thread.
BiometricPrompt	A class that manages a system-provided biometric prompt.
BiometricPrompt.AuthenticationCallback	Callback structure provided to BiometricPrompt.
BiometricPrompt.AuthenticationResult	Container for callback data from authenticate(PromptInfo) and authenticate(PromptInfo, CryptoObject).
BiometricPrompt.CryptoObject	A wrapper class for the crypto objects supported by BiometricPrompt.
BiometricPrompt.PromptInfo	A class that contains a builder which returns the PromptInfo to be used in authenticate(PromptInfo, CryptoObject) and authenticate(PromptInfo).
BiometricPrompt.PromptInfo.Builder	A builder that collects arguments to be shown on the system-provided biometric dialog.
BitmapCompat	Helper for accessing features in android.graphics.Bitmap.
BoolRes	Denotes that an integer parameter, field or method return value is expected to be a boolean resource reference.
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 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

CallableMethod
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.
CallbackReceiver	An objects that can receive remote callbacks.
CallbackReceiver	Holder class that is created for each class instance that is a CallbackReceiver and has methods tagged with @RemoteCallable.
CallbackToFutureAdapter	A utility that provides safety checks as an alternative to , failing the future if it will never complete.
CallbackToFutureAdapter.Completer	Used to complete the future returned by getFuture
CallbackToFutureAdapter.Resolver	Called by getFuture.
CallSuper	Denotes that any overriding methods should invoke this method as well.
Cancellable	Token representing a cancellable operation.
CancellationSignal	Static library support version of the framework's android.os.CancellationSignal.
CancellationSignal.OnCancelListener	Listens for cancellation.
CarAlertDialog	A subclass of Dialog that is tailored for the car environment.
CarAlertDialog.Builder	Builder class that can be used to create a CarAlertDialog by configuring the options for what shows up in the resulting dialog.
CarDrawerAdapter	Base adapter for displaying items in the car navigation drawer, which uses a PagedListView.
CarDrawerController	A controller that will handle the set up of the navigation drawer.
CardView	A FrameLayout with a rounded corner background and shadow.
CarListDialog	A subclass of Dialog that is tailored for the car environment.
CarListDialog.Builder	Builder class that can be used to create a CarListDialog by configuring the options for the list and behavior of the dialog.
CarListDialog.DialogSubSection	A struct that holds data for a section.
CarMenuItem	Class to build a CarMenuItem that appears in the CarToolbar menu.
CarMenuItem.Builder	Builder for creating a CarMenuItem
CarMenuItem.DisplayBehavior	Display behaviors for CarMenuItems.
CarMenuItem.OnClickListener	Interface definition for a callback to be invoked when a CarMenuItem is clicked.
CarToolbar	A toolbar for building car applications.
CarUxRestrictions	Car UX Restrictions event.
CarUxRestrictions.Builder	Builder class for CarUxRestrictions
CarUxRestrictionsHelper	Helps registering OnUxRestrictionsChangedListener and managing car connection.
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.
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 .
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.
ColumnCalculator	Utility class that calculates the width of the columns that will fit on the screen.
ColumnCardView	A CardView whose width can be specified by the number of columns that it will span.
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()
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.
CompoundButtonCompat	Helper for accessing android.widget.CompoundButton.
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.
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.
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.
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.
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.
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.

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.
DatePicker	DatePicker is a directly subclass of Picker.
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.
Delete	Marks a method in a Dao annotated class as a delete method.
Destination	Final or intermediate stop in a navigation route.
Destination.Builder	Builder for creating a Destination
Destination.Traffic	Congestion level on the way to a destination, compared to ideal driving conditions.
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.
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.
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.
DisplayCutoutCompat	Represents the area of the display that is not functional for displaying content.
DisplayManagerCompat	Helper for accessing features in android.hardware.display.DisplayManager.
Distance	Distance along the planned route between relevant points in the navigation
Distance.Unit	Possible units used to display this distance.
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.
DrawerItemViewHolder	Re-usable RecyclerView.ViewHolder for displaying items in the androidx.car.drawer.CarDrawerAdapter.
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.
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.

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	Can be used as an annotation on a field of an Entity or Pojo to signal that nested fields (i.e. fields of the annotated field's class) can 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 needs to return a result (e.g. in a Single<T> query) but the returned result set from the database is empty.
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 a JPEG file or a RAW image file.
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.
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.
ExternalInput	Identifies parameters of an RemoteCallable that will be pulled from the caller of the callback.

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 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.
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.
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.
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.
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.
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.
FragmentCompat	Helper for accessing features in Fragment in a backwards compatible fashion.
FragmentCompat.OnRequestPermissionsResultCallback	This interface is the contract for receiving the results for permission requests.
FragmentCompat.PermissionCompatDelegate	Customizable delegate that allows delegating permission related compatibility methods to a custom implementation.
FragmentContainer	Callbacks to a Fragment's container.
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
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.
FragmentPagerAdapter	Implementation of PagerAdapter that represents each page as a android.app.Fragment that is persistently kept in the fragment manager as long as the user can return to the page.
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
FragmentStatePagerAdapter	Implementation of PagerAdapter that uses a Fragment to manage each page.
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.
FragmentTabHost	Version of androidx.fragment.app.FragmentTabHost that can be used with the platform android.app.Fragment APIs.
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.
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.
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.
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.
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.
ImageCardView	A subclass of BaseCardView with an ImageView as its main region.
ImageReference	Reference to an image.
ImageReference.Builder	Builder for creating an ImageReference.
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.
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.
InputRangeBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
Insert	Marks a method in a Dao annotated class as an insert method.
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.
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.
InterpolatorRes	Denotes that an integer parameter, field or method return value is expected to be an interpolator resource reference (e.g.
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.
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(LoadParams, LoadCallback) and loadAfter(LoadParams, LoadCallback) to return data.
ItemKeyedDataSource.LoadInitialCallback	Callback for loadInitial(LoadInitialParams, LoadInitialCallback) to return data and, optionally, position/count information.
ItemKeyedDataSource.LoadInitialParams	Holder object for inputs to loadInitial(LoadInitialParams, LoadInitialCallback).
ItemKeyedDataSource.LoadParams	Holder object for inputs to loadBefore(LoadParams, LoadCallback) and loadAfter(LoadParams, LoadCallback).
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

JobIntentService

Helper for processing work that has been enqueued for a job/service.

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.

L

Lane	Configuration of a single lane of a road at a particular point in the navigation.
Lane.Builder	Builder for creating a Lane
LaneDirection	One of the possible directions a driver can go when using a particular lane at a particular step in the navigation.
LaneDirection.Builder	Builder for creating a LaneDirection
LaneDirection.Shape	Turn amount and direction.
LatLng	A representation of a latitude, longitude that can be serialized as a VersionedParcelable.
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
Lifecycle	Defines an object that has an Android Lifecycle.
Lifecycle.Event
Lifecycle.State	Lifecycle states.
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.
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.
ListItem	Definition of items that can be inserted into ListItemAdapter.
ListItem.ViewBinder	Functional interface to provide a way to interact with views in ViewHolder.
ListItem.ViewHolder	ViewHolder that supports ViewBinder.
ListItemAdapter	Adapter for PagedListView to display ListItem.
ListItemAdapter.BackgroundStyle	Constant class for background style of items.
ListItemProvider	Supplies data as ListItem.
ListItemProvider.ListProvider	A simple provider that wraps around a list.
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.
LivePagedListBuilder	Builder for LiveData<PagedList>, given a DataSource.Factory and a 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.
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.
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.
Maneuver	Information about a maneuver that the driver will be required to perform.
Maneuver.Builder	Builder for creating a Maneuver
Maneuver.Type	Possible maneuver types.
MarginLayoutParamsCompat	Helper for accessing API features in MarginLayoutParams in a backwards compatible way.
MathUtils	A utility class providing functions useful for common mathematical operations.
MbmsHelper	Helper methods for working with the android.telephony.mbms cell-broadcast APIs.
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.
MediaControlIntent	Constants for media control intents.
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.
MediaDescriptionCompat	A simple set of metadata for a media item suitable for display.
MediaDescriptionCompat.Builder	Builder for MediaDescriptionCompat objects.
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.
MediaMetadataCompat	Contains metadata about an item, such as the title, artist, etc.
MediaMetadataCompat.Builder	Use to build MediaMetadata objects.
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.DynamicGroupRouteController.OnDynamicRoutesChangedListener	Used to notify media router each route's property changes regarding this DynamicGroupRouteController instance.
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.
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.RemoteUserInfo	Information of a remote user of MediaSessionCompat or MediaBrowserServiceCompat.
MediaSessionStatus	Describes the playback status of a media session.
MediaSessionStatus.Builder	Builder for media session status objects.
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.
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.
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 android.support.v4.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
NavController	NavController manages app navigation within a NavHost.
NavController.OnDestinationChangedListener	OnDestinationChangedListener receives a callback when the getCurrentDestination() or its arguments change.
NavDeepLinkBuilder	Class used to construct deep links to a particular destination in a NavGraph.
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.
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.
NavigationState	Navigation state data to be displayed on the instrument cluster of a car.
NavigationState.Builder	Builder for creating a NavigationState
NavigationState.ServiceStatus	Possible service states
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.
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.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.
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	Interface 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.
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).
OnItemViewClickedListener	Interface for receiving notification when a item view holder is clicked.
OnItemViewSelectedListener	Interface for receiving notification when a row or item becomes selected.
OnLifecycleEvent
OnUxRestrictionsChangedListener	Listener Interface for clients to implement to get updated on User Experience Restrictions (UXR, or UX restrictions) related changes.
Operation	An object that provides information about the execution of an asynchronous command being performed by WorkManager.
Operation.State	The lifecycle state of an Operation.
Operation.State.FAILURE	This represents an Operation which has failed.
Operation.State.IN_PROGRESS	This represents an Operation which is in progress.
Operation.State.SUCCESS	This represents an Operation which is successful.
OperationCanceledException	An exception type that is thrown when an operation in progress is canceled.
OperationMonitor	OperationMonitor provides a mechanism to coordinate application logic with ongoing user selection activities (such as active band selection and active gesture selection).
OperationMonitor.OnChangeListener	Listen to changes in operation status.
OrientationHelper	Helper class for LayoutManagers to abstract measurements depending on the View's orientation.
OverwritingInputMerger	An InputMerger that attempts to add all keys from all inputs to the output.

P

PackageInfoCompat	Helper for accessing features in PackageInfo.
PagedList	Lazy loading list that pages in immutable content from a DataSource.
PagedList.BoundaryCallback	Signals when a PagedList has reached the end of available data.
PagedList.Builder	Builder class for PagedList.
PagedList.Callback	Callback signaling when content is loaded into the list.
PagedList.Config	Configures how a PagedList loads content from its DataSource.
PagedList.Config.Builder	Builder class for Config.
PagedListAdapter	RecyclerView.Adapter base class for presenting paged data from PagedLists in a RecyclerView.
PagedListView	View that wraps a RecyclerView and a scroll bar that has page up and down arrows.
PagedListView.DividerVisibilityManager	Interface for controlling visibility of item dividers for individual items based on the item's position.
PagedListView.Gutter	The possible values for @{link #setGutter}.
PagedListView.ItemCap	Interface for a RecyclerView.Adapter to cap the number of items.
PagedListView.ItemPositionOffset	Interface for a RecyclerView.Adapter to set the position offset for the adapter to load the data.
PagedListView.OnScrollListener	Used to listen for PagedListView scroll events.
PagedScrollBarView	A custom view to provide list scroll behaviour -- up/down buttons and scroll indicator.
PagedScrollBarView.PaginationListener	Listener for when the list should paginate.
PageKeyedDataSource	Incremental data loader for page-keyed content, where requests return keys for next/previous pages.
PageKeyedDataSource.LoadCallback	Callback for PageKeyedDataSource loadBefore(LoadParams, LoadCallback) and loadAfter(LoadParams, LoadCallback) to return data.
PageKeyedDataSource.LoadInitialCallback	Callback for loadInitial(LoadInitialParams, LoadInitialCallback) to return data and, optionally, position/count information.
PageKeyedDataSource.LoadInitialParams	Holder object for inputs to loadInitial(LoadInitialParams, LoadInitialCallback).
PageKeyedDataSource.LoadParams	Holder object for inputs to loadBefore(LoadParams, LoadCallback) and loadAfter(LoadParams, LoadCallback).
PagerAdapter	Base class providing the adapter to populate pages inside of a ViewPager.
PageRow	Used to represent content spanning full page.
PagerSnapHelper	Implementation of the SnapHelper supporting pager style snapping in either vertical or horizontal orientation.
PagerTabStrip	PagerTabStrip is an interactive indicator of the current, next, and previous pages of a ViewPager.
PagerTitleStrip	PagerTitleStrip is a non-interactive indicator of the current, next, and previous pages of a ViewPager.
PaintCompat	Helper for accessing features in Paint.
Pair	Container to ease passing around a tuple of two objects.
Palette	A helper class to extract prominent colors from an image.
Palette.Builder	Builder class for generating Palette instances.
Palette.Filter	A Filter provides a mechanism for exercising fine-grained control over which colors are valid within a resulting Palette.
Palette.PaletteAsyncListener	Listener to be used with generateAsync(Bitmap, PaletteAsyncListener) or generateAsync(Bitmap, int, PaletteAsyncListener)
Palette.Swatch	Represents a color swatch generated from an image's palette.
Parallax	Parallax tracks a list of dynamic Propertys typically representing foreground UI element positions on screen.
Parallax.FloatProperty	FloatProperty provide access to an index based integer type property inside Parallax.
Parallax.IntProperty	IntProperty provide access to an index based integer type property inside Parallax.
Parallax.PropertyMarkerValue	Class holding a fixed value for a Property in Parallax.
ParallaxEffect	ParallaxEffect class drives changes in ParallaxTarget in response to changes in variables defined in Parallax.
ParallaxTarget	ParallaxTarget is responsible for updating the target through the update(float) method or the directUpdate(Number) method when isDirectMapping() is true.
ParallaxTarget.DirectPropertyTarget	DirectPropertyTarget is to support direct mapping into either Integer Property or Float Property.
ParallaxTarget.PropertyValuesHolderTarget	PropertyValuesHolderTarget is an implementation of ParallaxTarget that uses PropertyValuesHolder to update the target object.
ParcelableCompat	Helper for accessing features in android.os.Parcelable.
ParcelableCompatCreatorCallbacks	Callbacks a Parcelable creator should implement.
ParcelableVolumeInfo	Convenience class for passing information about the audio configuration of a MediaSessionCompat.
ParcelCompat	Helper for accessing features in Parcel.
ParcelUtils	Utilities for managing VersionedParcelables.
PathInterpolatorCompat	Helper for creating path-based Interpolator instances.
PathMotion	This base class can be extended to provide motion along a Path to Transitions.
PathSegment	A line segment that represents an approximate fraction of a Path after flattening.
PathUtils	A set of path-related utility methods.
PatternPathMotion	A PathMotion that takes a Path pattern and applies it to the separation between two points.
PatternsCompat	Commonly used regular expression patterns.
PercentFrameLayout	Subclass of android.widget.FrameLayout that supports percentage based dimensions and margins.
PercentFrameLayout.LayoutParams
PercentLayoutHelper	Helper for layouts that want to support percentage based dimensions.
PercentLayoutHelper.PercentLayoutInfo	Container for information about percentage dimensions and margins.
PercentLayoutHelper.PercentLayoutParams	If a layout wants to support percentage based dimensions and use this helper class, its LayoutParams subclass must implement this interface.
PercentRelativeLayout	Subclass of android.widget.RelativeLayout that supports percentage based dimensions and margins.
PercentRelativeLayout.LayoutParams
PeriodicWorkRequest	A WorkRequest for repeating work.
PeriodicWorkRequest.Builder	Builder for PeriodicWorkRequests.
PermissionChecker	This class provides permission check APIs that verify both the permission and the associated app op for this permission if such is defined.
PermissionInfoCompat	Helper for accessing features in PermissionInfo.
Person	Provides an immutable reference to an entity that appears repeatedly on different surfaces of the platform.
Person.Builder	Builder for the immutable Person class.
Picker	Picker is a widget showing multiple customized PickerColumns.
Picker.PickerValueListener	Listener for Picker value changes.
PickerColumn	Picker column class used by Picker, defines a contiguous value ranges and associated labels.
PinPicker	Picker subclass for allowing the user to enter a numerical PIN.
PlaybackBannerControlGlue	A helper class for managing a PlaybackControlsRow being displayed in PlaybackGlueHost.
PlaybackBaseControlGlue	A base abstract class for managing a PlaybackControlsRow being displayed in PlaybackGlueHost.
PlaybackControlGlue	A helper class for managing a PlaybackControlsRow and PlaybackGlueHost that implements a recommended approach to handling standard playback control actions such as play/pause, fast forward/rewind at progressive speed levels, and skip to next/previous.
PlaybackControlsRow	A Row of playback controls to be displayed by a PlaybackControlsRowPresenter.
PlaybackControlsRow.ClosedCaptioningAction	An action for displaying a CC (Closed Captioning) icon.
PlaybackControlsRow.FastForwardAction	An action displaying an icon for fast forward.
PlaybackControlsRow.HighQualityAction	An action for displaying a HQ (High Quality) icon.
PlaybackControlsRow.MoreActions	An action displaying an icon for "more actions".
PlaybackControlsRow.MultiAction	Base class for an action comprised of a series of icons.
PlaybackControlsRow.OnPlaybackProgressCallback	Listener for progress or duration change.
PlaybackControlsRow.PictureInPictureAction	An action displaying an icon for picture-in-picture.
PlaybackControlsRow.PlayPauseAction	An action displaying icons for play and pause.
PlaybackControlsRow.RepeatAction	An action for displaying three repeat states: none, one, or all.
PlaybackControlsRow.RewindAction	An action displaying an icon for rewind.
PlaybackControlsRow.ShuffleAction	An action for displaying a shuffle icon.
PlaybackControlsRow.SkipNextAction	An action displaying an icon for skip next.
PlaybackControlsRow.SkipPreviousAction	An action displaying an icon for skip previous.
PlaybackControlsRow.ThumbsAction	A base class for displaying a thumbs action.
PlaybackControlsRow.ThumbsDownAction	An action displaying an icon for thumbs down.
PlaybackControlsRow.ThumbsUpAction	An action displaying an icon for thumbs up.
PlaybackControlsRowPresenter	A PlaybackControlsRowPresenter renders a PlaybackControlsRow to display a series of playback control buttons.
PlaybackControlsRowPresenter.ViewHolder	A ViewHolder for the PlaybackControlsRow.
PlaybackFragment	A fragment for displaying playback controls and related content.
PlaybackFragmentGlueHost	PlaybackGlueHost implementation the interaction between this class and PlaybackFragment.
PlaybackGlue	Base class for abstraction of media play/pause feature.
PlaybackGlue.PlayerCallback	Interface to allow clients to take action once the video is ready to play and start stop.
PlaybackGlueHost	This class represents the UI (e.g. Fragment/Activity) hosting playback controls and defines the interaction between
PlaybackGlueHost.HostCallback	Callbacks triggered by the host(e.g. fragment) hosting the video controls/surface.
PlaybackGlueHost.PlayerCallback	Optional Client that implemented by PlaybackGlueHost to respond to player event.
PlaybackRowPresenter	Subclass of RowPresenter that can define the desired behavior when the view reappears.
PlaybackRowPresenter.ViewHolder	This container is used for trapping click events and passing them to the playback controls.
PlaybackSeekDataProvider	Class to be implemented by app to provide seeking data and thumbnails to UI.
PlaybackSeekDataProvider.ResultCallback	Client to receive result for PlaybackSeekDataProvider#getThumbnail(int, * ResultCallback).
PlaybackSeekUi	Interface to be implemented by UI component to support seeking.
PlaybackSeekUi.Client	Client (e.g. PlaybackGlue) to register on PlaybackSeekUi so that it can interact with Seeking UI.
PlaybackStateCompat	Playback state for a MediaSessionCompat.
PlaybackStateCompat.Builder	Builder for PlaybackStateCompat objects.
PlaybackStateCompat.CustomAction	CustomActions can be used to extend the capabilities of the standard transport controls by exposing app specific actions to Controllers.
PlaybackStateCompat.CustomAction.Builder	Builder for CustomAction objects.
PlaybackSupportFragment	A fragment for displaying playback controls and related content.
PlaybackSupportFragmentGlueHost	PlaybackGlueHost implementation the interaction between this class and PlaybackSupportFragment.
PlaybackTransportControlGlue	A helper class for managing a PlaybackControlsRow being displayed in PlaybackGlueHost, it supports standard playback control actions play/pause, and skip next/previous.
PlaybackTransportRowPresenter	A PlaybackTransportRowPresenter renders a PlaybackControlsRow to display a series of playback control buttons.
PlaybackTransportRowPresenter.ViewHolder	A ViewHolder for the PlaybackControlsRow supporting seek UI.
PlayerAdapter	Base class that wraps underlying media player.
PlayerAdapter.Callback	Client for client of PlayerAdapter.
PluralsRes	Denotes that an integer parameter, field or method return value is expected to be a plurals resource reference.
PointerIconCompat	Helper for accessing features in android.view.PointerIcon in a backwards compatible fashion.
Pools	Helper class for creating pools of objects.
Pools.Pool	Interface for managing a pool of objects.
Pools.SimplePool	Simple (non-synchronized) pool of objects.
Pools.SynchronizedPool	Synchronized) pool of objects.
PopupMenu	Static library support version of the framework's android.widget.PopupMenu.
PopupMenu.OnDismissListener	Callback interface used to notify the application that the menu has closed.
PopupMenu.OnMenuItemClickListener	Interface responsible for receiving menu item click events if the items themselves do not have individual item click listeners.
PopupMenuCompat	Helper for accessing features in PopupMenu.
PopUpToBuilder	DSL for customizing NavOptionsBuilder.popUpTo operations.
PopupWindowCompat	Helper for accessing features in PopupWindow.
PositionalDataSource	Position-based data loader for a fixed-size, countable data set, supporting fixed-size loads at arbitrary page positions.
PositionalDataSource.LoadInitialCallback	Callback for loadInitial(LoadInitialParams, LoadInitialCallback) to return data, position, and count.
PositionalDataSource.LoadInitialParams	Holder object for inputs to loadInitial(LoadInitialParams, LoadInitialCallback).
PositionalDataSource.LoadRangeCallback	Callback for PositionalDataSource loadRange(LoadRangeParams, LoadRangeCallback) to return data.
PositionalDataSource.LoadRangeParams	Holder object for inputs to loadRange(LoadRangeParams, LoadRangeCallback).
PostMessageService	A service to receive postMessage related communication from a Custom Tabs provider.
PostMessageServiceConnection	A ServiceConnection for Custom Tabs providers to use while connecting to a PostMessageService on the client side.
PrecomputedTextCompat	A text which has the character metrics data.
PrecomputedTextCompat.Params	The information required for building PrecomputedTextCompat.
PrecomputedTextCompat.Params.Builder	A builder for creating Params.
Preference	The basic building block that represents an individual setting displayed to a user in the preference hierarchy.
Preference.BaseSavedState	A base class for managing the instance state of a Preference.
Preference.OnPreferenceChangeListener	Interface definition for a callback to be invoked when the value of this Preference has been changed by the user and is about to be set and/or persisted.
Preference.OnPreferenceClickListener	Interface definition for a callback to be invoked when a Preference is clicked.
Preference.SummaryProvider	Interface definition for a callback to be invoked when the summary of this Preference is requested (typically when this preference is added to the hierarchy or its value is updated).
PreferenceCategory	A container that is used to group similar Preferences.
PreferenceDataStore	A data store interface to be implemented and provided to the Preference framework.
PreferenceDialogFragment	Abstract base class which presents a dialog associated with a DialogPreference.
PreferenceDialogFragmentCompat	Abstract base class which presents a dialog associated with a DialogPreference.
PreferenceFragment	Shows a hierarchy of Preference objects as lists.
PreferenceFragment.OnPreferenceDisplayDialogCallback	Interface that the fragment's containing activity should implement to be able to process preference items that wish to display a dialog.
PreferenceFragment.OnPreferenceStartFragmentCallback	Interface that the fragment's containing activity should implement to be able to process preference items that wish to switch to a specified fragment.
PreferenceFragment.OnPreferenceStartScreenCallback	Interface that the fragment's containing activity should implement to be able to process preference items that wish to switch to a new screen of preferences.
PreferenceFragmentCompat	A PreferenceFragmentCompat is the entry point to using the Preference library.
PreferenceFragmentCompat.OnPreferenceDisplayDialogCallback	Interface that the fragment's containing activity should implement to be able to process preference items that wish to display a dialog.
PreferenceFragmentCompat.OnPreferenceStartFragmentCallback	Interface that the fragment's containing activity should implement to be able to process preference items that wish to switch to a specified fragment.
PreferenceFragmentCompat.OnPreferenceStartScreenCallback	Interface that the fragment's containing activity should implement to be able to process preference items that wish to switch to a new screen of preferences.
PreferenceGroup	A container for multiple Preferences.
PreferenceGroup.PreferencePositionCallback	Interface for PreferenceGroup adapters to implement so that PreferenceFragmentCompat#scrollToPreference(String) and PreferenceFragmentCompat#scrollToPreference(Preference) can determine the correct scroll position to request.
PreferenceManager	Used to help create Preference hierarchies from activities or XML.
PreferenceManager.OnDisplayPreferenceDialogListener	Interface definition for a class that will be called when a Preference requests to display a dialog.
PreferenceManager.OnNavigateToScreenListener	Interface definition for a class that will be called when a PreferenceScreen requests navigation.
PreferenceManager.OnPreferenceTreeClickListener	Interface definition for a callback to be invoked when a Preference in the hierarchy rooted at this PreferenceScreen is clicked.
PreferenceManager.PreferenceComparisonCallback	Callback class to be used by the androidx.recyclerview.widget.RecyclerView.Adapter associated with the PreferenceScreen, used to determine when two Preference objects are semantically and visually the same.
PreferenceManager.SimplePreferenceComparisonCallback	A basic implementation of PreferenceComparisonCallback suitable for use with the default Preference classes.
PreferenceScreen	A top-level container that represents a settings screen.
PreferenceViewHolder	A RecyclerView.ViewHolder class which caches views associated with the default Preference layouts.
Presenter	A Presenter is used to generate Views and bind Objects to them on demand.
Presenter.ViewHolder	ViewHolder can be subclassed and used to cache any view accessors needed to improve binding performance (for example, results of findViewById) without needing to subclass a View.
Presenter.ViewHolderTask	Base class to perform a task on Presenter.
PresenterSelector	A PresenterSelector is used to obtain a Presenter for a given Object.
PresenterSwitcher	An abstract helper class that switches a view in its parent view using a PresenterSelector.
PreviewChannel	Since API 26, all TV apps may create preview channels and publish them to the home screen.
PreviewChannel.Builder	This builder makes it easy to create a PreviewChannel object by allowing you to chain setters.
PreviewChannelHelper	From a user's perspective, the TV home screen has two types of channels: the single Live Channels row versus the App preview Channels.
PreviewProgram	A convenience class to access PreviewPrograms entries in the system content provider.
PreviewProgram.Builder	This Builder class simplifies the creation of a PreviewProgram object.
PrimaryKey	Marks a field in an Entity as the primary key.
PrintHelper	Helper for printing bitmaps.
PrintHelper.OnPrintFinishCallback	Callback for observing when a print operation is completed.
ProcessLifecycleOwner	Class that provides lifecycle for the whole application process.
Program	A convenience class to access TvContractCompat.Programs entries in the system content provider.
Program.Builder	This Builder class simplifies the creation of a Program object.
ProgressBarManager	Manager for showing/hiding progress bar widget.
Px	Denotes that an integer parameter, field or method return value is expected to represent a pixel dimension.

Q

Query	Encapsulates information related to calling ContentResolver#query, including the logic determining the best query method to call.
Query	Marks a method in a Dao annotated class as a query method.

R

RadioButtonListItem	Class to build a list item with RadioButton.
RadioButtonListItem.ViewHolder	Holds views of RadioButtonListItem.
RangeBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
RatingCompat	A class to encapsulate rating information used as content metadata.
RawQuery	Marks a method in a Dao annotated class as a raw query method where you can pass the query as a SupportSQLiteQuery.
RawRes	Denotes that an integer parameter, field or method return value is expected to be a raw resource reference.
ReceivedKeyedAppState	A keyed app state received from an app.
ReceivedKeyedAppState.ReceivedKeyedAppStateBuilder	The builder for ReceivedKeyedAppState.
RecommendationExtender	Helper class to add content info extensions to notifications.
RecyclerView	A flexible view for providing a limited window into a large data set.
RecyclerView.Adapter	Base class for an Adapter
RecyclerView.AdapterDataObserver	Observer base class for watching changes to an Adapter.
RecyclerView.ChildDrawingOrderCallback	A callback interface that can be used to alter the drawing order of RecyclerView children.
RecyclerView.EdgeEffectFactory	EdgeEffectFactory lets you customize the over-scroll edge effect for RecyclerViews.
RecyclerView.EdgeEffectFactory.EdgeDirection
RecyclerView.ItemAnimator	This class defines the animations that take place on items as changes are made to the adapter.
RecyclerView.ItemAnimator.AdapterChanges	The set of flags that might be passed to recordPreLayoutInformation(State, ViewHolder, int, List).
RecyclerView.ItemAnimator.ItemAnimatorFinishedListener	This interface is used to inform listeners when all pending or running animations in an ItemAnimator are finished.
RecyclerView.ItemAnimator.ItemHolderInfo	A simple data structure that holds information about an item's bounds.
RecyclerView.ItemDecoration	An ItemDecoration allows the application to add a special drawing and layout offset to specific item views from the adapter's data set.
RecyclerView.LayoutManager	A LayoutManager is responsible for measuring and positioning item views within a RecyclerView as well as determining the policy for when to recycle item views that are no longer visible to the user.
RecyclerView.LayoutManager.LayoutPrefetchRegistry	Interface for LayoutManagers to request items to be prefetched, based on position, with specified distance from viewport, which indicates priority.
RecyclerView.LayoutManager.Properties	Some general properties that a LayoutManager may want to use.
RecyclerView.LayoutParams	LayoutParams subclass for children of RecyclerView.
RecyclerView.OnChildAttachStateChangeListener	A Listener interface that can be attached to a RecylcerView to get notified whenever a ViewHolder is attached to or detached from RecyclerView.
RecyclerView.OnFlingListener	This class defines the behavior of fling if the developer wishes to handle it.
RecyclerView.OnItemTouchListener	An OnItemTouchListener allows the application to intercept touch events in progress at the view hierarchy level of the RecyclerView before those touch events are considered for RecyclerView's own scrolling behavior.
RecyclerView.OnScrollListener	An OnScrollListener can be added to a RecyclerView to receive messages when a scrolling event has occurred on that RecyclerView.
RecyclerView.RecycledViewPool	RecycledViewPool lets you share Views between multiple RecyclerViews.
RecyclerView.Recycler	A Recycler is responsible for managing scrapped or detached item views for reuse.
RecyclerView.RecyclerListener	A RecyclerListener can be set on a RecyclerView to receive messages whenever a view is recycled.
RecyclerView.SimpleOnItemTouchListener	An implementation of RecyclerView.OnItemTouchListener that has empty method bodies and default return values.
RecyclerView.SmoothScroller	Base class for smooth scrolling.
RecyclerView.SmoothScroller.Action	Holds information about a smooth scroll request by a SmoothScroller.
RecyclerView.SmoothScroller.ScrollVectorProvider	An interface which is optionally implemented by custom RecyclerView.LayoutManager to provide a hint to a SmoothScroller about the location of the target position.
RecyclerView.State	Contains useful information about the current RecyclerView state like target scroll position or view focus.
RecyclerView.ViewCacheExtension	ViewCacheExtension is a helper class to provide an additional layer of view caching that can be controlled by the developer.
RecyclerView.ViewHolder	A ViewHolder describes an item view and metadata about its place within the RecyclerView.
RecyclerViewAccessibilityDelegate	The AccessibilityDelegate used by RecyclerView.
RecyclerViewAccessibilityDelegate.ItemDelegate	The default implementation of accessibility delegate for the individual items of the RecyclerView.
RecyclerViewParallax	Implementation of Parallax class for RecyclerView.
RecyclerViewParallax.ChildPositionProperty	Subclass of Parallax.IntProperty.
Relation	A convenience annotation which can be used in a Pojo to automatically fetch relation entities.
RemoteActionCompat	Represents a remote action that can be called from another process.
RemoteCallable	Used to tag a method as callable using CallbackReceiver#createRemoteCallback.
RemoteCallback	An instance of a callback to a specific class/method with a specific set of arguments.
RemoteCallbackProcessor	Processes annotations from RemoteCallbacks.
RemoteInput	Helper for using the android.app.RemoteInput.
RemoteInput.Builder	Builder class for androidx.core.app.RemoteInput objects.
RemotePlaybackClient	A helper class for playing media on remote routes using the remote playback protocol defined by MediaControlIntent.
RemotePlaybackClient.ActionCallback	Base callback type for remote playback requests.
RemotePlaybackClient.ItemActionCallback	Callback for remote playback requests that operate on items.
RemotePlaybackClient.OnMessageReceivedListener	A callback that will receive messages from media sessions.
RemotePlaybackClient.SessionActionCallback	Callback for remote playback requests that operate on sessions.
RemotePlaybackClient.StatusCallback	A callback that will receive media status updates.
RequiresApi	Denotes that the annotated element should only be called on the given API level or higher.
RequiresFeature	Denotes that the annotated element requires one or more features.
RequiresPermission	Denotes that the annotated element requires (or may require) one or more permissions.
RequiresPermission.Read	Specifies that the given permission is required for read operations.
RequiresPermission.Write	Specifies that the given permission is required for write operations.
ResolvableFuture	An AndroidX version of Guava's SettableFuture.
ResourceCursorAdapter	Static library support version of the framework's android.widget.ResourceCursorAdapter.
ResourcesCompat	Helper for accessing features in android.content.res.Resources.
ResourcesCompat.FontCallback	Interface used to receive asynchronous font fetching events.
RestrictTo	Denotes that the annotated element should only be accessed from within a specific scope (as defined by Scope).
RestrictTo.Scope
RichText	A RichText is an immutable sequence of graphic elements (e.g.: text, images) to be displayed one after another.
RichText.Builder	Builder for creating a RichText
RichTextElement	An item in a RichText sequence, acting as a union of different graphic elements that can be displayed one after another.
RichTextElement.Builder	Builder for creating a RichTextElement
Room	Utility class for Room.
RoomDatabase	Base class for all Room databases.
RoomDatabase.Builder	Builder for RoomDatabase.
RoomDatabase.Callback	Callback for RoomDatabase.
RoomDatabase.JournalMode	Journal modes for SQLite database.
RoomDatabase.MigrationContainer	A container to hold migrations.
RoomWarnings	The list of warnings that are produced by Room.
RoundedBitmapDrawable	A Drawable that wraps a bitmap and can be drawn with rounded corners.
RoundedBitmapDrawableFactory	Constructs RoundedBitmapDrawable objects, either from Bitmaps directly, or from streams and files.
RoundedDrawable	Maintains and draws a drawable inside rounded rectangular bounds.
Row	The base class for all rows.
RowBuilderDsl	Helper class annotated with @SliceMarker, which is annotated with @DslMarker.
RowHeaderPresenter	RowHeaderPresenter provides a default presentation for HeaderItem using a RowHeaderView and optionally a TextView for description.
RowHeaderPresenter.ViewHolder	A ViewHolder for the RowHeaderPresenter.
RowHeaderView	RowHeaderView is a header text view.
RowPresenter	An abstract Presenter that renders an Object in RowsFragment, the object can be subclass Row or a generic one.
RowPresenter.ViewHolder	A ViewHolder for a Row.
RowsFragment	An ordered set of rows of leanback widgets.
RowsFragment.MainFragmentAdapter
RowsFragment.MainFragmentRowsAdapter	The adapter that RowsFragment implements BrowseFragment.
RowsSupportFragment	An ordered set of rows of leanback widgets.
RowsSupportFragment.MainFragmentAdapter
RowsSupportFragment.MainFragmentRowsAdapter	The adapter that RowsSupportFragment implements BrowseSupportFragment.
RxPagedListBuilder	Builder for Observable<PagedList> or Flowable<PagedList>, given a DataSource.Factory and a PagedList.Config.
RxRoom	Helper class to add RxJava2 support to Room.
RxWorker	RxJava2 interoperability Worker implementation.

S

SafeBrowsingResponseBoundaryInterface	Boundary interface for SafeBrowsingResponseCompat.
SafeBrowsingResponseCompat	Compatibility version of SafeBrowsingResponse.
SavedStateHandle	A handle to saved state passed down to ViewModel.
SavedStateRegistry	An interface for plugging components that consumes and contributes to the saved state.
SavedStateRegistry.AutoRecreated	Subclasses of this interface will be automatically recreated if they were previously registered via {runOnNextRecreation(Class)}.
SavedStateRegistry.SavedStateProvider	This interface marks a component that contributes to saved state.
SavedStateRegistryController	An API for SavedStateRegistryOwner implementations to control SavedStateRegistry.
SavedStateRegistryOwner	A scope that owns SavedStateRegistry
SavedStateVMFactory	ViewModelProvider.Factory that can create ViewModels accessing and contributing to a saved state via SavedStateHandle received in a constructor.
ScaleGestureDetectorCompat	Helper for accessing features in ScaleGestureDetector.
Scene	A scene represents the collection of values that various properties in the View hierarchy will have when the scene is applied.
ScrollerCompat	Provides access to new Scroller APIs when available.
ScrollingView	An interface that can be implemented by Views to provide scroll related APIs.
SearchBar	A search widget containing a search orb and a text entry view.
SearchBar.SearchBarListener	Interface for receiving notification of search query changes.
SearchBar.SearchBarPermissionListener	Interface that handles runtime permissions requests.
SearchEditText	EditText widget that monitors keyboard changes.
SearchEditText.OnKeyboardDismissListener	Interface for receiving notification when the keyboard is dismissed.
SearchFragment	A fragment to handle searches.
SearchFragment.SearchResultProvider	Search API to be provided by the application.
SearchOrbView	A widget that draws a search affordance, represented by a round background and an icon.
SearchOrbView.Colors	A set of colors used to display the search orb.
SearchSupportFragment	A fragment to handle searches.
SearchSupportFragment.SearchResultProvider	Search API to be provided by the application.
SearchView	A widget that provides a user interface for the user to enter a search query and submit a request to a search provider.
SearchView.OnCloseListener
SearchView.OnQueryTextListener	Callbacks for changes to the query text.
SearchView.OnSuggestionListener	Callback interface for selection events on suggestions.