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MediaSessionCompat.Callback

public static abstract class MediaSessionCompat.Callback
extends Object

java.lang.Object
↳	android.support.v4.media.session.MediaSessionCompat.Callback

Receives transport controls, media buttons, and commands from controllers and the system. The callback may be set using setCallback(MediaSessionCompat.Callback).

Summary

Public constructors
`MediaSessionCompat.Callback()`

Public methods
`void`	`onCommand(String command, Bundle extras, ResultReceiver cb)` Called when a controller has sent a custom command to this session.
`void`	`onCustomAction(String action, Bundle extras)` Called when a `MediaControllerCompat` wants a `PlaybackStateCompat.CustomAction` to be performed.
`void`	`onFastForward()` Override to handle requests to fast forward.
`boolean`	`onMediaButtonEvent(Intent mediaButtonEvent)` Override to handle media button events.
`void`	`onPause()` Override to handle requests to pause playback.
`void`	`onPlay()` Override to handle requests to begin playback.
`void`	`onPlayFromMediaId(String mediaId, Bundle extras)` Override to handle requests to play a specific mediaId that was provided by your app.
`void`	`onPlayFromSearch(String query, Bundle extras)` Override to handle requests to begin playback from a search query.
`void`	`onPlayFromUri(Uri uri, Bundle extras)` Override to handle requests to play a specific media item represented by a URI.
`void`	`onPrepare()` Override to handle requests to prepare playback.
`void`	`onPrepareFromMediaId(String mediaId, Bundle extras)` Override to handle requests to prepare for playing a specific mediaId that was provided by your app.
`void`	`onPrepareFromSearch(String query, Bundle extras)` Override to handle requests to prepare playback from a search query.
`void`	`onPrepareFromUri(Uri uri, Bundle extras)` Override to handle requests to prepare a specific media item represented by a URI.
`void`	`onRewind()` Override to handle requests to rewind.
`void`	`onSeekTo(long pos)` Override to handle requests to seek to a specific position in ms.
`void`	`onSetRating(RatingCompat rating)` Override to handle the item being rated.
`void`	`onSkipToNext()` Override to handle requests to skip to the next media item.
`void`	`onSkipToPrevious()` Override to handle requests to skip to the previous media item.
`void`	`onSkipToQueueItem(long id)` Override to handle requests to play an item with a given id from the play queue.
`void`	`onStop()` Override to handle requests to stop playback.

Inherited methods

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

Public constructors

MediaSessionCompat.Callback

MediaSessionCompat.Callback ()

Public methods

onCommand

void onCommand (String command, 
                Bundle extras, 
                ResultReceiver cb)

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.

Parameters
`command`	`String`: The command name.
`extras`	`Bundle`: Optional parameters for the command, may be null.
`cb`	`ResultReceiver`: A result receiver to which a result may be sent by the command, may be null.

onCustomAction

void onCustomAction (String action, 
                Bundle extras)

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

Parameters
`action`	`String`: The action that was originally sent in the `PlaybackStateCompat.CustomAction`.
`extras`	`Bundle`: Optional extras specified by the `MediaControllerCompat`.

onFastForward

void onFastForward ()

Override to handle requests to fast forward.

onMediaButtonEvent

boolean onMediaButtonEvent (Intent mediaButtonEvent)

Override to handle media button events.

Parameters
`mediaButtonEvent`	`Intent`: The media button event intent.

Returns
`boolean`	True if the event was handled, false otherwise.

onPause

void onPause ()

Override to handle requests to pause playback.

onPlay

void onPlay ()

Override to handle requests to begin playback.

onPlayFromMediaId

void onPlayFromMediaId (String mediaId, 
                Bundle extras)

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

Parameters
`mediaId`	`String`
`extras`	`Bundle`

onPlayFromSearch

void onPlayFromSearch (String query, 
                Bundle extras)

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.

Parameters
`query`	`String`
`extras`	`Bundle`

onPlayFromUri

void onPlayFromUri (Uri uri, 
                Bundle extras)

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

Parameters
`uri`	`Uri`
`extras`	`Bundle`

onPrepare

void onPrepare ()

Override to handle requests to prepare playback. During the preparation, a session should not hold audio focus in order to allow other session play seamlessly. The state of playback should be updated to STATE_PAUSED after the preparation is done.

onPrepareFromMediaId

void onPrepareFromMediaId (String mediaId, 
                Bundle extras)

Override to handle requests to prepare for playing a specific mediaId that was provided by your app. During the preparation, a session should not hold audio focus in order to allow other session play seamlessly. The state of playback should be updated to STATE_PAUSED after the preparation is done. The playback of the prepared content should start in the implementation of onPlay(). Override onPlayFromMediaId(String, Bundle) to handle requests for starting playback without preparation.

Parameters
`mediaId`	`String`
`extras`	`Bundle`

onPrepareFromSearch

void onPrepareFromSearch (String query, 
                Bundle extras)

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. During the preparation, a session should not hold audio focus in order to allow other session play seamlessly. The state of playback should be updated to STATE_PAUSED after the preparation is done. The playback of the prepared content should start in the implementation of onPlay(). Override onPlayFromSearch(String, Bundle) to handle requests for starting playback without preparation.

Parameters
`query`	`String`
`extras`	`Bundle`

onPrepareFromUri

void onPrepareFromUri (Uri uri, 
                Bundle extras)

Override to handle requests to prepare a specific media item represented by a URI. During the preparation, a session should not hold audio focus in order to allow other session play seamlessly. The state of playback should be updated to STATE_PAUSED after the preparation is done. The playback of the prepared content should start in the implementation of onPlay(). Override onPlayFromUri(Uri, Bundle) to handle requests for starting playback without preparation.

Parameters
`uri`	`Uri`
`extras`	`Bundle`

onRewind

void onRewind ()

Override to handle requests to rewind.

onSeekTo

void onSeekTo (long pos)

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

Parameters
`pos`	`long`: New position to move to, in milliseconds.

onSetRating

void onSetRating (RatingCompat rating)

Override to handle the item being rated.

onSkipToNext

void onSkipToNext ()

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

onSkipToPrevious

void onSkipToPrevious ()

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

onSkipToQueueItem

void onSkipToQueueItem (long id)

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

Parameters
`id`	`long`

onStop

void onStop ()

Override to handle requests to stop playback.

Interfaces

Classes

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MediaSessionCompat.Callback

Summary

Public constructors

Public methods

Inherited methods

Public constructors

MediaSessionCompat.Callback

Public methods

onCommand

onCustomAction

onFastForward

onMediaButtonEvent

onPause

onPlay

onPlayFromMediaId

onPlayFromSearch

onPlayFromUri

onPrepare

onPrepareFromMediaId

onPrepareFromSearch

onPrepareFromUri

onRewind

onSeekTo

onSetRating

onSkipToNext

onSkipToPrevious

onSkipToQueueItem

onStop