# android.support.v4.media.session added in[version 22.1.0](https://developer.android.com/topic/libraries/support-library/revisions) # android.support.v4.media.session | This package is part of the Android[support library](https://developer.android.com/topic/libraries/support-library)which is no longer maintained. The support library has been superseded by[AndroidX](https://developer.android.com/jetpack/androidx)which is part of[Jetpack](https://developer.android.com/jetpack). We recommend using the AndroidX libraries in all new projects. You should also consider[migrating](https://developer.android.com/jetpack/androidx/migrate)existing projects to AndroidX. To find the AndroidX class that maps to this deprecated class, see the AndroidX support library[class mappings](https://developer.android.com/jetpack/androidx/migrate/class-mappings). ## Interfaces |-----------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | [MediaSessionCompat.OnActiveChangeListener](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.OnActiveChangeListener) | | ## Classes |---------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [MediaButtonReceiver](https://developer.android.com/reference/android/support/v4-media-session/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. | | [MediaControllerCompat](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat) | Allows an app to interact with an ongoing media session. | | [MediaControllerCompat.Callback](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat.Callback) | Callback for receiving updates on from the session. | | [MediaControllerCompat.PlaybackInfo](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat.PlaybackInfo) | Holds information about the way volume is handled for this session. | | [MediaControllerCompat.TransportControls](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat.TransportControls) | Interface for controlling media playback on a session. | | [MediaSessionCompat](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat) | Allows interaction with media controllers, volume keys, media buttons, and transport controls. | | [MediaSessionCompat.Callback](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.Callback) | Receives transport controls, media buttons, and commands from controllers and the system. | | [MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem) | A single item that is part of the play queue. | | [MediaSessionCompat.Token](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.Token) | Represents an ongoing session. | | [ParcelableVolumeInfo](https://developer.android.com/reference/android/support/v4-media-session/ParcelableVolumeInfo.) | Convenience class for passing information about the audio configuration of a[MediaSessionCompat](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat). | | [PlaybackStateCompat](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat) | Playback state for a[MediaSessionCompat](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat). | | [PlaybackStateCompat.Builder](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.Builder) | Builder for[PlaybackStateCompat](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat)objects. | | [PlaybackStateCompat.CustomAction](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.CustomAction) | [CustomActions](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.CustomAction)can be used to extend the capabilities of the standard transport controls by exposing app specific actions to[Controllers](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat). | | [PlaybackStateCompat.CustomAction.Builder](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.CustomAction.Builder) | Builder for[PlaybackStateCompat.CustomAction](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.CustomAction)objects. | - ## Interfaces - [MediaSessionCompat.OnActiveChangeListener](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.OnActiveChangeListener) - ## Classes - [MediaButtonReceiver](https://developer.android.com/reference/android/support/v4/media/session/MediaButtonReceiver) - [MediaControllerCompat](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat) - [MediaControllerCompat.Callback](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat.Callback) - [MediaControllerCompat.PlaybackInfo](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat.PlaybackInfo) - [MediaControllerCompat.TransportControls](https://developer.android.com/reference/android/support/v4-media-session/MediaControllerCompat.TransportControls) - [MediaSessionCompat](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat) - [MediaSessionCompat.Callback](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.Callback) - [MediaSessionCompat.QueueItem](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.QueueItem) - [MediaSessionCompat.Token](https://developer.android.com/reference/android/support/v4-media-session/MediaSessionCompat.Token) - [ParcelableVolumeInfo](https://developer.android.com/reference/android/support/v4-media-session/ParcelableVolumeInfo.) - [PlaybackStateCompat](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat) - [PlaybackStateCompat.Builder](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.Builder) - [PlaybackStateCompat.CustomAction](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.CustomAction) - [PlaybackStateCompat.CustomAction.Builder](https://developer.android.com/reference/android/support/v4-media-session/PlaybackStateCompat.CustomAction.Builder)