Summary: Ctors | Methods | Inherited Methods

MediaSession2.SessionCallback

public static abstract class MediaSession2.SessionCallback
extends Object

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

Callback to be called for all incoming commands from MediaController2s.

This API is not generally intended for third party application developers.

Summary

Public constructors
`MediaSession2.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 timeout, 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 timeout)` 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

MediaSession2.SessionCallback

public MediaSession2.SessionCallback ()

Public methods

onCommandResult

Added in Android Q

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 must never be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information This value must never be `null`.
`token`	`Object`: the token got from `MediaSession2#sendSessionCommand` This value must never be `null`.
`command`	`Session2Command`: the session command This value must never be `null`.
`result`	`Session2Command.Result`: the result of the session command This value must never be `null`.

onConnect

Added in Android Q

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.

Parameters
`session`	`MediaSession2`: the session for this event This value must never be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information. This value must never be `null`.

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

onDisconnected

Added in Android Q

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

Called when a controller is disconnected

Parameters
`session`	`MediaSession2`: the session for this event This value must never be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information This value must never be `null`.

onPostConnect

Added in Android Q

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.

Parameters
`session`	`MediaSession2`: the session for this event This value must never be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information. This value must never be `null`.

onSessionCommand

Added in Android Q

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 must never be `null`.
`controller`	`MediaSession2.ControllerInfo`: controller information This value must never be `null`.
`command`	`Session2Command`: the session command This value must never 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.