ActionProvider.SubUiVisibilityListener
ActionProvider.VisibilityListener	Listens to changes in visibility as reported by ActionProvider.refreshVisibility().
DifferentialMotionFlingTarget	Represents an entity that may be flung by a differential motion or an entity that initiates fling on a target View.
DragStartHelper.OnDragStartListener	Interface definition for a callback to be invoked when a drag start gesture is detected.
KeyEventDispatcher.Component	Implement this in any component that dispatches s.
LayoutInflaterFactory	Used with LayoutInflaterCompat.setFactory().
MenuHost	A class that allows you to host and keep track of MenuProviders that will supply `android.view.MenuItem`s to the app bar.
MenuItemCompat.OnActionExpandListener	Interface definition for a callback to be invoked when a menu item marked with MenuItemCompat.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW is expanded or collapsed.
MenuProvider	Interface for indicating that a component will be supplying `MenuItem`s to the component owning the app bar.
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`.
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.
OnApplyWindowInsetsListener	Listener for applying window insets on a view in a custom way.
OnReceiveContentListener	Listener for apps to implement handling for insertion of content.
OnReceiveContentViewBehavior	Interface for widgets to implement default behavior for receiving content.
ScrollingView	An interface that can be implemented by Views to provide scroll related APIs.
TintableBackgroundView	Interface which allows a `android.view.View` to receive background tinting calls from ViewCompat when running on API v20 devices or lower.
ViewCompat.OnUnhandledKeyEventListenerCompat	Interface definition for a callback to be invoked when a hardware key event hasn't been handled by the view hierarchy.
ViewPropertyAnimatorListener	An animation listener receives notifications from an animation.
ViewPropertyAnimatorUpdateListener	Implementors of this interface can add themselves as update listeners to an `ViewPropertyAnimatorCompat` instance to receive callbacks on every animation frame, after the current frame's values have been calculated for that `ViewPropertyAnimatorCompat`.
WindowInsetsAnimationControlListenerCompat	Listener that encapsulates a request to WindowInsetsControllerCompat.controlWindowInsetsAnimation(int, long, Interpolator, CancellationSignal, WindowInsetsAnimationControlListenerCompat).
WindowInsetsControllerCompat.OnControllableInsetsChangedListener	Listener to be notified when the set of controllable WindowInsetsCompat.Type controlled by a `WindowInsetsController` changes.

AccessibilityDelegateCompat	Helper for accessing .
ActionProvider	This class is a mediator for accomplishing a given task, for example sharing a file.
ContentInfoCompat	Holds all the relevant data for a request to OnReceiveContentListener.
ContentInfoCompat.Builder	Builder for ContentInfoCompat.
DifferentialMotionFlingController	Controller differential motion flings.
DisplayCompat	A class for retrieving accurate display modes for a display.
DisplayCompat.ModeCompat	Compat class which provides access to the underlying display mode, if there is one, and a more reliable display mode size.
DisplayCutoutCompat	Represents the area of the display that is not functional for displaying content.
DragAndDropPermissionsCompat	Helper for accessing features in a backwards compatible fashion.
DragStartHelper	DragStartHelper is a utility class for implementing drag and drop support.
GestureDetectorCompat	Detects various gestures and events using the supplied `MotionEvent`s.
GravityCompat	Compatibility shim for accessing newer functionality from .
HapticFeedbackConstantsCompat	Helper class for accessing values in .
InputDeviceCompat	Helper class for accessing values in .
KeyEventDispatcher	Allows dependent components to enable full dispatch compatibility in core.
LayoutInflaterCompat	Helper for accessing features in `LayoutInflater`.
MarginLayoutParamsCompat	Helper for accessing API features in in a backwards compatible way.
MenuCompat	Helper for accessing features in .
MenuHostHelper	Helper class for implementing MenuHost.
MenuItemCompat	Helper for accessing features in `MenuItem`.
MotionEventCompat	Helper for accessing features in `MotionEvent`.
NestedScrollingChildHelper	Helper class for implementing nested scrolling child views compatible with Android platform versions earlier than Android 5.0 Lollipop (API 21).
NestedScrollingParentHelper	Helper class for implementing nested scrolling parent views compatible with Android platform versions earlier than Android 5.0 Lollipop (API 21).
OneShotPreDrawListener	An OnPreDrawListener that will remove itself after one OnPreDraw call.
PointerIconCompat	Helper for accessing features in in a backwards compatible fashion.
ScaleGestureDetectorCompat	Helper for accessing features in `ScaleGestureDetector`.
SoftwareKeyboardControllerCompat	Provide controls for showing and hiding the IME.
VelocityTrackerCompat	Helper for accessing features in .
ViewCompat	Helper for accessing features in `View`.
ViewConfigurationCompat	Helper for accessing features in .
ViewGroupCompat	Helper for accessing features in `ViewGroup`.
ViewParentCompat	Helper for accessing features in .
ViewPropertyAnimatorCompat
ViewPropertyAnimatorListenerAdapter	This adapter class provides empty implementations of the methods from ViewPropertyAnimatorListener.
ViewStructureCompat	Helper for accessing features in .
WindowCompat	Helper for accessing features in `Window`.
WindowInsetsAnimationCompat	Class representing an animation of a set of windows that cause insets.
WindowInsetsAnimationCompat.BoundsCompat	Class representing the range of an WindowInsetsAnimationCompat
WindowInsetsAnimationCompat.Callback	Interface that allows the application to listen to animation events for windows that cause insets.
WindowInsetsAnimationControllerCompat	Controller for app-driven animation of system windows.
WindowInsetsCompat	Describes a set of insets for window content.
WindowInsetsCompat.Builder	Builder for WindowInsetsCompat.
WindowInsetsCompat.Type	Class that defines different types of sources causing window insets.
WindowInsetsControllerCompat	Provide simple controls of windows that generate insets.

ContentInfoCompat.Flags	Flags to configure the insertion behavior.
ContentInfoCompat.Source	Specifies the UI through which content is being inserted.
HapticFeedbackConstantsCompat.HapticFeedbackFlags	Flags for performing haptic feedback.
HapticFeedbackConstantsCompat.HapticFeedbackType	Haptic feedback types.
VelocityTrackerCompat.VelocityTrackableMotionEventAxis
ViewCompat.FocusDirection
ViewCompat.FocusRealDirection
ViewCompat.FocusRelativeDirection
ViewCompat.NestedScrollType
ViewCompat.ScrollAxis
ViewCompat.ScrollIndicators
WindowInsetsAnimationCompat.Callback.DispatchMode
WindowInsetsCompat.Type.InsetsType