MediaSession2.SessionCallback

Kotlin |Java

public static abstract class MediaSession2.SessionCallback
extends Object

java.lang.Object
↳	android.media.MediaSession2.SessionCallback

This API is not generally intended for third party application developers. Use the AndroidX Media2 session Library for consistent behavior across all devices.

Callback to be called for all incoming commands from MediaController2s.

Summary

Public constructors
`SessionCallback()`

Public methods
`void`	`onCommandResult(MediaSession2 session, MediaSession2.ControllerInfo controller, Object token, Session2Command command, Session2Command.Result result)` Called when the command sent to the controller is finished.
`Session2CommandGroup`	`onConnect(MediaSession2 session, MediaSession2.ControllerInfo controller)` Called when a controller is created for this session.
`void`	`onDisconnected(MediaSession2 session, MediaSession2.ControllerInfo controller)` Called when a controller is disconnected
`void`	`onPostConnect(MediaSession2 session, MediaSession2.ControllerInfo controller)` Called immediately after a controller is connected.
`Session2Command.Result`	`onSessionCommand(MediaSession2 session, MediaSession2.ControllerInfo controller, Session2Command command, Bundle args)` Called when a controller sent a session command.

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 timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public constructors

SessionCallback

Added in API level 29

public SessionCallback ()

Public methods

onCommandResult

Added in API level 29

public void onCommandResult (MediaSession2 session, 
                MediaSession2.ControllerInfo controller, 
                Object token, 
                Session2Command command, 
                Session2Command.Result result)

Called when the command sent to the controller is finished.

Parameters
`session`	`MediaSession2`: the session for this event This value cannot be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information This value cannot be `null`.
`token`	`Object`: the token got from `MediaSession2.sendSessionCommand` This value cannot be `null`.
`command`	`Session2Command`: the session command This value cannot be `null`.
`result`	`Session2Command.Result`: the result of the session command This value cannot be `null`.

onConnect

Added in API level 29

public Session2CommandGroup onConnect (MediaSession2 session, 
                MediaSession2.ControllerInfo controller)

Called when a controller is created for this session. Return allowed commands for controller. By default it returns null.

You can reject the connection by returning null. In that case, controller receives MediaController2.ControllerCallback.onDisconnected(MediaController2) and cannot be used.

The controller hasn't connected yet in this method, so calls to the controller (e.g. MediaSession2.sendSessionCommand(ControllerInfo, Session2Command, Bundle)) would be ignored. Override onPostConnect(MediaSession2, ControllerInfo) for the custom initialization for the controller instead.

Parameters
`session`	`MediaSession2`: the session for this event This value cannot be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information. This value cannot be `null`.

Returns
`Session2CommandGroup`	allowed commands. Can be `null` to reject connection.

onDisconnected

Added in API level 29

public void onDisconnected (MediaSession2 session, 
                MediaSession2.ControllerInfo controller)

Called when a controller is disconnected

Parameters
`session`	`MediaSession2`: the session for this event This value cannot be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information This value cannot be `null`.

onPostConnect

Added in API level 29

public void onPostConnect (MediaSession2 session, 
                MediaSession2.ControllerInfo controller)

Called immediately after a controller is connected. This is a convenient method to add custom initialization between the session and a controller.

Note that calls to the controller (e.g. MediaSession2.sendSessionCommand(ControllerInfo, Session2Command, Bundle)) work here but don't work in onConnect(MediaSession2, ControllerInfo) because the controller hasn't connected yet in onConnect(MediaSession2, ControllerInfo).

Parameters
`session`	`MediaSession2`: the session for this event This value cannot be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information. This value cannot be `null`.

onSessionCommand

Added in API level 29

public Session2Command.Result onSessionCommand (MediaSession2 session, 
                MediaSession2.ControllerInfo controller, 
                Session2Command command, 
                Bundle args)

Called when a controller sent a session command.

Parameters
`session`	`MediaSession2`: the session for this event This value cannot be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information This value cannot be `null`.
`command`	`Session2Command`: the session command This value cannot be `null`.
`args`	`Bundle`: optional arguments This value may be `null`.

Returns
`Session2Command.Result`	the result for the session command. If `null`, RESULT_INFO_SKIPPED will be sent to the session.