Media Controllers attached to the session will receive the callback Playback can continue, but you should create a new PlaybackState with the error code ERROR_CODE_END_OF_QUEUE and The transport remains in a "normal" state (such as STATE_PLAYING) but the PlaybackState holds an error code.įor example, if the last song is playing and the user requests a skip to next song, Transport state to STATE_ERROR and specify an associated error with setErrorMessage(int, CharSequence).Īs long as playback is blocked by the error, the PlaybackState should continueĪ non-fatal error occurs when your app cannot handle a request, but can continue to play: Whenever playback is interrupted, you should generate a fatal error: Set the Playback state of the session ( getState())Īnd, when necessary, an associated error code ( getErrorCode()). Note that PlaybackState is an object that contains separate values for the To reduce overall memory consumption from these frequent operations, it's a good idea to create the builders once and to reuse them throughout the life of the session. Every time the state or metadata changes, you must use the corresponding builder for each class, PlaybackStateCompat.Builder() or MediaMetadataCompat.Builder(), and then pass the new instance to the media session by calling The player state and metadata can change over the life of a media session. An instance of ContentUris that points to a larger version of the artwork.The image is a bitmap with a maximum size of 320x320dp (if larger, it's scaled down). Album artwork for display on the lock screen.The name of the artist, album, and track.The valid controller actions that can be handled in the present stateĬlass describes the material that is playing:. ![]() (See getErrorCode() and read States and errors, below.) An error code and optional error message, when applicable.The transport state (whether the player is playing/paused/buffering, etc.There are two classes that represent the state of a media session.Ĭlass describes the current operational state of the player. Session and delegating events received from the media session. MediaSessionConnector takes care of mapping the player state to the media You don't need to implement your own MediaSessionCompat.Callback. For more information, see Responding to Mediaīuttons. Why ACTION_PLAY is assigned to the session state during When your app is newly initialized (or stopped), its PlaybackState mustĬontain a play action matching the intent that the media button sends. You should create and initialize a media session in the onCreate() method of the Create an instance of MediaSessionCompat.Callback and assign it to the session (more on callbacks below).The playback state changes throughout the session, so we recommend caching the PlaybackStateCompat.Builder for reuse. ![]()
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