Added in API level 29

ControllerCallback

abstract class ControllerCallback
kotlin.Any
   ↳ android.media.MediaController2.ControllerCallback

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

Interface for listening to change in activeness of the MediaSession2.

Summary

Public constructors

Public methods
open Unit
onCommandResult(controller: MediaController2, token: Any, command: Session2Command, result: Session2Command.Result)

Called when the command sent to the connected session is finished.
open Unit
onConnected(controller: MediaController2, allowedCommands: Session2CommandGroup)

Called when the controller is successfully connected to the session.
open Unit

Called when the session refuses the controller or the controller is disconnected from the session.
open Unit
onPlaybackActiveChanged(controller: MediaController2, playbackActive: Boolean)

Called when the session's playback activeness is changed.
open Session2Command.Result?
onSessionCommand(controller: MediaController2, command: Session2Command, args: Bundle?)

Called when the connected session sent a session command.

Public constructors

ControllerCallback

Added in API level 29
ControllerCallback()

Public methods

onCommandResult

Added in API level 29
open fun onCommandResult(
    controller: MediaController2, 
    token: Any, 
    command: Session2Command, 
    result: Session2Command.Result
): Unit

Called when the command sent to the connected session is finished.

Parameters
controller MediaController2: the controller for this event This value cannot be null.
token Any: the token got from MediaController2#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.

onConnected

Added in API level 29
open fun onConnected(
    controller: MediaController2, 
    allowedCommands: Session2CommandGroup
): Unit

Called when the controller is successfully connected to the session. The controller becomes available afterwards.

Parameters
controller MediaController2: the controller for this event This value cannot be null.
allowedCommands Session2CommandGroup: commands that's allowed by the session. This value cannot be null.

onDisconnected

Added in API level 29
open fun onDisconnected(controller: MediaController2): Unit

Called when the session refuses the controller or the controller is disconnected from the session. The controller becomes unavailable afterwards and the callback wouldn't be called.

It will be also called after the close(), so you can put clean up code here. You don't need to call close() after this.

Parameters
controller MediaController2: the controller for this event This value cannot be null.

onPlaybackActiveChanged

Added in API level 29
open fun onPlaybackActiveChanged(
    controller: MediaController2, 
    playbackActive: Boolean
): Unit

Called when the session's playback activeness is changed.

Parameters
controller MediaController2: the controller for this event This value cannot be null.
playbackActive Boolean: true if the session's playback is active. false otherwise.

onSessionCommand

Added in API level 29
open fun onSessionCommand(
    controller: MediaController2, 
    command: Session2Command, 
    args: Bundle?
): Session2Command.Result?

Called when the connected session sent a session command.

Parameters
controller MediaController2: the controller for this event This value cannot be null.
command Session2Command: the session command This value cannot be null.
args Bundle?: optional arguments This value may be null.
Return
Session2Command.Result? the result for the session command. If null, RESULT_INFO_SKIPPED will be sent to the session.