MediaSessionCompat.Callback

fun onAddQueueItem(description: MediaDescriptionCompat!): Unit

Called when a MediaControllerCompat wants to add a QueueItem with the given description at the end of the play queue.

fun onAddQueueItem(description: MediaDescriptionCompat!, index: Int): Unit

Called when a MediaControllerCompat wants to add a QueueItem with the given description at the specified position in the play queue.

fun onCommand(command: String!, extras: Bundle!, cb: ResultReceiver!): Unit

Called when a controller has sent a custom command to this session. The owner of the session may handle custom commands but is not required to.

fun onCustomAction(action: String!, extras: Bundle!): Unit

Called when a MediaControllerCompat wants a PlaybackStateCompat.CustomAction to be performed.

fun onFastForward(): Unit

Override to handle requests to fast forward.

fun onMediaButtonEvent(mediaButtonEvent: Intent!): Boolean

Override to handle media button events.

The double tap of KEYCODE_MEDIA_PLAY_PAUSE or KEYCODE_HEADSETHOOK will call the onSkipToNext by default. If the current SDK level is 27 or higher, the default double tap handling is done by framework so this method would do nothing for it.

fun onPause(): Unit

Override to handle requests to pause playback.

fun onPlay(): Unit

Override to handle requests to begin playback.

fun onPlayFromMediaId(mediaId: String!, extras: Bundle!): Unit

Override to handle requests to play a specific mediaId that was provided by your app.

fun onPlayFromSearch(query: String!, extras: Bundle!): Unit

Override to handle requests to begin playback from a search query. An empty query indicates that the app may play any music. The implementation should attempt to make a smart choice about what to play.

fun onPlayFromUri(uri: Uri!, extras: Bundle!): Unit

Override to handle requests to play a specific media item represented by a URI.

fun onPrepare(): Unit

Override to handle requests to prepare playback. Override onPlay to handle requests for starting playback.

fun onPrepareFromMediaId(mediaId: String!, extras: Bundle!): Unit

Override to handle requests to prepare for playing a specific mediaId that was provided by your app. Override onPlayFromMediaId to handle requests for starting playback.

fun onPrepareFromSearch(query: String!, extras: Bundle!): Unit

Override to handle requests to prepare playback from a search query. An empty query indicates that the app may prepare any music. The implementation should attempt to make a smart choice about what to play. Override onPlayFromSearch to handle requests for starting playback.

fun onPrepareFromUri(uri: Uri!, extras: Bundle!): Unit

Override to handle requests to prepare a specific media item represented by a URI. Override onPlayFromUri to handle requests for starting playback.

fun onRemoveQueueItem(description: MediaDescriptionCompat!): Unit

Called when a MediaControllerCompat wants to remove the first occurrence of the specified QueueItem with the given description in the play queue.

fun onRemoveQueueItemAt(index: Int): Unit

Called when a MediaControllerCompat wants to remove a QueueItem at the specified position in the play queue.

fun onRewind(): Unit

Override to handle requests to rewind.

fun onSeekTo(pos: Long): Unit

Override to handle requests to seek to a specific position in ms.

fun onSetCaptioningEnabled(enabled: Boolean): Unit

Override to handle requests to enable/disable captioning.

fun onSetPlaybackSpeed(speed: Float): Unit

Override to handle the playback speed change. To update the new playback speed, create a new PlaybackStateCompat by using setState, and set it with setPlaybackState.

A value of 1.0f is the default playback value, and a negative value indicates reverse playback. The speed will not be equal to zero.

fun onSetRating(rating: RatingCompat!): Unit

Override to handle the item being rated.

fun onSetRating(rating: RatingCompat!, extras: Bundle!): Unit

Override to handle the item being rated.

fun onSetRepeatMode(repeatMode: Int): Unit

Override to handle the setting of the repeat mode.

You should call setRepeatMode before end of this method in order to notify the change to the MediaControllerCompat, or getRepeatMode could return an invalid value.

fun onSetShuffleMode(shuffleMode: Int): Unit

Override to handle the setting of the shuffle mode.

You should call setShuffleMode before the end of this method in order to notify the change to the MediaControllerCompat, or getShuffleMode could return an invalid value.

fun onSkipToNext(): Unit

Override to handle requests to skip to the next media item.

fun onSkipToPrevious(): Unit

Override to handle requests to skip to the previous media item.

fun onSkipToQueueItem(id: Long): Unit

Override to handle requests to play an item with a given id from the play queue.

fun onStop(): Unit

Override to handle requests to stop playback.