# android.media.session Added in[API level 21](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) # android.media.session *** ** * ** *** [Kotlin](https://developer.android.com/reference/kotlin/android/media/session/package-summary "View this page in Kotlin")\|Java ## Interfaces |--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [MediaSessionManager.OnActiveSessionsChangedListener](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnActiveSessionsChangedListener) | Listens for changes to the list of active sessions. | | [MediaSessionManager.OnMediaKeyEventSessionChangedListener](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnMediaKeyEventSessionChangedListener) | Listener to receive changes in the media key event session, which would receive a media key event unless specified. | | [MediaSessionManager.OnSession2TokensChangedListener](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnSession2TokensChangedListener) | Listens for changes to the[MediaSessionManager.getSession2Tokens()](https://developer.android.com/reference/android/media/session/MediaSessionManager#getSession2Tokens()). | ## Classes |----------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [MediaController](https://developer.android.com/reference/android/media/session/MediaController) | Allows an app to interact with an ongoing media session. | | [MediaController.Callback](https://developer.android.com/reference/android/media/session/MediaController.Callback) | Callback for receiving updates from the session. | | [MediaController.PlaybackInfo](https://developer.android.com/reference/android/media/session/MediaController.PlaybackInfo) | Holds information about the current playback and how audio is handled for this session. | | [MediaController.TransportControls](https://developer.android.com/reference/android/media/session/MediaController.TransportControls) | Interface for controlling media playback on a session. | | [MediaSession](https://developer.android.com/reference/android/media/session/MediaSession) | Allows interaction with media controllers, volume keys, media buttons, and transport controls. | | [MediaSession.Callback](https://developer.android.com/reference/android/media/session/MediaSession.Callback) | Receives media buttons, transport controls, and commands from controllers and the system. | | [MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem) | A single item that is part of the play queue. | | [MediaSession.Token](https://developer.android.com/reference/android/media/session/MediaSession.Token) | Represents an ongoing session. | | [MediaSessionManager](https://developer.android.com/reference/android/media/session/MediaSessionManager) | Provides support for interacting with[media sessions](https://developer.android.com/reference/android/media/session/MediaSession)that applications have published to express their ongoing media playback state. | | [MediaSessionManager.RemoteUserInfo](https://developer.android.com/reference/android/media/session/MediaSessionManager.RemoteUserInfo) | Information of a remote user of[MediaSession](https://developer.android.com/reference/android/media/session/MediaSession)or[MediaBrowserService](https://developer.android.com/reference/android/service/media/MediaBrowserService). | | [PlaybackState](https://developer.android.com/reference/android/media/session/PlaybackState) | Playback state for a[MediaSession](https://developer.android.com/reference/android/media/session/MediaSession). | | [PlaybackState.Builder](https://developer.android.com/reference/android/media/session/PlaybackState.Builder) | Builder for[PlaybackState](https://developer.android.com/reference/android/media/session/PlaybackState)objects. | | [PlaybackState.CustomAction](https://developer.android.com/reference/android/media/session/PlaybackState.CustomAction) | [CustomActions](https://developer.android.com/reference/android/media/session/PlaybackState.CustomAction)can be used to extend the capabilities of the standard transport controls by exposing app specific actions to[MediaControllers](https://developer.android.com/reference/android/media/session/MediaController). | | [PlaybackState.CustomAction.Builder](https://developer.android.com/reference/android/media/session/PlaybackState.CustomAction.Builder) | Builder for[CustomAction](https://developer.android.com/reference/android/media/session/PlaybackState.CustomAction)objects. | - ## Interfaces - [MediaSessionManager.OnActiveSessionsChangedListener](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnActiveSessionsChangedListener) - [MediaSessionManager.OnMediaKeyEventSessionChangedListener](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnMediaKeyEventSessionChangedListener) - [MediaSessionManager.OnSession2TokensChangedListener](https://developer.android.com/reference/android/media/session/MediaSessionManager.OnSession2TokensChangedListener) - ## Classes - [MediaController](https://developer.android.com/reference/android/media/session/MediaController) - [MediaController.Callback](https://developer.android.com/reference/android/media/session/MediaController.Callback) - [MediaController.PlaybackInfo](https://developer.android.com/reference/android/media/session/MediaController.PlaybackInfo) - [MediaController.TransportControls](https://developer.android.com/reference/android/media/session/MediaController.TransportControls) - [MediaSession](https://developer.android.com/reference/android/media/session/MediaSession) - [MediaSession.Callback](https://developer.android.com/reference/android/media/session/MediaSession.Callback) - [MediaSession.QueueItem](https://developer.android.com/reference/android/media/session/MediaSession.QueueItem) - [MediaSession.Token](https://developer.android.com/reference/android/media/session/MediaSession.Token) - [MediaSessionManager](https://developer.android.com/reference/android/media/session/MediaSessionManager) - [MediaSessionManager.RemoteUserInfo](https://developer.android.com/reference/android/media/session/MediaSessionManager.RemoteUserInfo) - [PlaybackState](https://developer.android.com/reference/android/media/session/PlaybackState) - [PlaybackState.Builder](https://developer.android.com/reference/android/media/session/PlaybackState.Builder) - [PlaybackState.CustomAction](https://developer.android.com/reference/android/media/session/PlaybackState.CustomAction) - [PlaybackState.CustomAction.Builder](https://developer.android.com/reference/android/media/session/PlaybackState.CustomAction.Builder)