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.
ActivityCompat.RequestPermissionsRequestCodeValidator
CoreComponentFactory.CompatWrapped	Implement this interface to allow a different class to be returned when instantiating on certain API levels.
NotificationBuilderWithBuilderAccessor	Interface implemented by notification compat builders that support an accessor for .
NotificationCompat.Action.Extender	Extender interface for use with NotificationCompat.Builder.extend(NotificationCompat.Extender).
NotificationCompat.Extender	Extender interface for use with NotificationCompat.Builder.extend(NotificationCompat.Extender).
OnMultiWindowModeChangedProvider	Interface for components that can dispatch calls from .
OnNewIntentProvider	Interface for components that can dispatch calls from .
OnPictureInPictureModeChangedProvider	Interface for components that can dispatch calls from .
SharedElementCallback.OnSharedElementsReadyListener	Listener to be called after SharedElementCallback.onSharedElementsArrived(List, List, SharedElementCallback.OnSharedElementsReadyListener) when the shared elements are ready to be hidden in the source Activity and shown in the destination Activity.
TaskStackBuilder.SupportParentable

ActivityCompat	Helper for accessing features in .
ActivityManagerCompat	Helper for accessing features in `android.app.ActivityManager` in a backwards compatible fashion.
ActivityOptionsCompat	Helper for accessing features in in a backwards compatible fashion.
AlarmManagerCompat	Compatibility library for `AlarmManager` with fallbacks for older platforms.
AppComponentFactory	Version of that works with androidx libraries.
AppLaunchChecker	This class provides APIs for determining how an app has been launched.
AppLocalesStorageHelper	Helper class to manage storage of locales in app's persistent files.
AppOpsManagerCompat	Helper for accessing features in .
BundleCompat	Helper for accessing features in .
ComponentActivity	Base class for activities that enables composition of higher level components.
ComponentActivity.ExtraData
CoreComponentFactory	Instance of AppComponentFactory for support libraries.
DialogCompat	Helper for accessing features in in a backwards compatible fashion.
FrameMetricsAggregator	This class can be used to record and return data about per-frame durations.
GrammaticalInflectionManagerCompat	Helper for accessing features in .
JobIntentService	Helper for processing work that has been enqueued for a job/service.
LocaleManagerCompat	Helper for accessing features in in a backwards compatible fashion.
MultiWindowModeChangedInfo	Class that encapsulates the information that is delivered when is dispatched to a OnMultiWindowModeChangedProvider.
NavUtils	NavUtils provides helper functionality for applications implementing recommended Android UI navigation patterns.
NotificationChannelCompat	A representation of settings that apply to a collection of similarly themed notifications.
NotificationChannelCompat.Builder	Builder class for NotificationChannelCompat objects.
NotificationChannelGroupCompat	A grouping of related notification channels.
NotificationChannelGroupCompat.Builder	Builder class for NotificationChannelGroupCompat objects.
NotificationCompat	Helper for accessing features in `android.app.Notification`.
NotificationCompat.Action	Structure to encapsulate a named action that can be shown as part of this notification.
NotificationCompat.Action.Builder	Builder class for NotificationCompat.Action objects.
NotificationCompat.Action.WearableExtender	Wearable extender for notification actions.
NotificationCompat.BigPictureStyle	Helper class for generating large-format notifications that include a large image attachment.
NotificationCompat.BigTextStyle	Helper class for generating large-format notifications that include a lot of text.
NotificationCompat.BubbleMetadata	Encapsulates the information needed to display a notification as a bubble.
NotificationCompat.BubbleMetadata.Builder	Builder to construct a NotificationCompat.BubbleMetadata object.
NotificationCompat.Builder	Builder class for NotificationCompat objects.
NotificationCompat.CallStyle	Helper class for generating large-format notifications that include a caller and required actions, and indicate an incoming call.
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 NotificationCompat.CarExtender.UnreadConversation objects.
NotificationCompat.DecoratedCustomViewStyle	Notification style for custom views that are decorated by the system.
NotificationCompat.InboxStyle	Helper class for generating large-format notifications that include a list of (up to 5) strings.
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 object.
NotificationCompat.TvExtender	Helper class to add Android TV extensions to notifications.
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 NotificationManagerCompat.
NotificationManagerCompat	Compatibility library for NotificationManager with fallbacks for older platforms.
NotificationManagerCompat.NotificationWithIdAndTag	Helper class which encapsulates a Notification, its id, and optionally a tag, for use when batch-posting a number of notifications.
PendingIntentCompat	Helper for accessing features in `PendingIntent`.
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.
PictureInPictureModeChangedInfo	Class that encapsulates the information that is delivered when is dispatched to a OnPictureInPictureModeChangedProvider.
RemoteActionCompat	Represents a remote action that can be called from another process.
RemoteInput	Helper for using the `android.app.RemoteInput`.
RemoteInput.Builder	Builder class for RemoteInput objects.
ServiceCompat	Helper for accessing features in .
ShareCompat	Extra helper functionality for sharing data between activities.
ShareCompat.IntentBuilder	IntentBuilder is a helper for constructing and sharing intents and starting activities to share content.
ShareCompat.IntentReader	IntentReader is a helper for reading the data contained within a sharing (ACTION_SEND) Intent.
SharedElementCallback	Listener provided in FragmentActivity.setEnterSharedElementCallback(SharedElementCallback) and FragmentActivity.setExitSharedElementCallback(SharedElementCallback) to monitor the Activity transitions.
TaskStackBuilder	Utility class for constructing synthetic back stacks for cross-task navigation on Android 3.0 and newer.

ActivityOptionsCompat.BackgroundActivityStartMode	Enumeration of background activity start modes.
FrameMetricsAggregator.MetricType
GrammaticalInflectionManagerCompat.GrammaticalGender
NotificationCompat.Action.SemanticAction	Provides meaning to an NotificationCompat.Action that hints at what the associated `PendingIntent` will do.
NotificationCompat.BadgeIconType
NotificationCompat.CallStyle.CallType
NotificationCompat.GroupAlertBehavior
NotificationCompat.NotificationVisibility
NotificationCompat.ServiceNotificationBehavior
NotificationCompat.StreamType
NotificationManagerCompat.InterruptionFilter
PendingIntentCompat.Flags
RemoteInput.EditChoicesBeforeSending
RemoteInput.Source
ServiceCompat.StopForegroundFlags