MediaSessionManager

public final class MediaSessionManager
extends Object

java.lang.Object
↳	android.media.session.MediaSessionManager

Provides support for interacting with media sessions that applications have published to express their ongoing media playback state.

Use Context.getSystemService(Context.MEDIA_SESSION_SERVICE) to get an instance of this class.

See also:

MediaSession
MediaController

Summary

Nested classes
`interface`	`MediaSessionManager.OnActiveSessionsChangedListener` Listens for changes to the list of active sessions.

Public methods
`void`	`addOnActiveSessionsChangedListener(MediaSessionManager.OnActiveSessionsChangedListener sessionListener, ComponentName notificationListener)` Add a listener to be notified when the list of active sessions changes.This requires the android.Manifest.permission.MEDIA_CONTENT_CONTROL permission be held by the calling app.
`void`	`addOnActiveSessionsChangedListener(MediaSessionManager.OnActiveSessionsChangedListener sessionListener, ComponentName notificationListener, Handler handler)` Add a listener to be notified when the list of active sessions changes.This requires the android.Manifest.permission.MEDIA_CONTENT_CONTROL permission be held by the calling app.
`List<MediaController>`	`getActiveSessions(ComponentName notificationListener)` Get a list of controllers for all ongoing sessions.
`void`	`removeOnActiveSessionsChangedListener(MediaSessionManager.OnActiveSessionsChangedListener listener)` Stop receiving active sessions updates on the specified listener.

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 methods

addOnActiveSessionsChangedListener

added in API level 21

void addOnActiveSessionsChangedListener (MediaSessionManager.OnActiveSessionsChangedListener sessionListener, 
                ComponentName notificationListener)

Add a listener to be notified when the list of active sessions changes.This requires the android.Manifest.permission.MEDIA_CONTENT_CONTROL permission be held by the calling app. You may also retrieve this list if your app is an enabled notification listener using the NotificationListenerService APIs, in which case you must pass the ComponentName of your enabled listener. Updates will be posted to the thread that registered the listener.

Parameters
`sessionListener`	`MediaSessionManager.OnActiveSessionsChangedListener`: The listener to add. This value must never be `null`.
`notificationListener`	`ComponentName`: The enabled notification listener component. May be null. This value may be `null`.

addOnActiveSessionsChangedListener

added in API level 21

void addOnActiveSessionsChangedListener (MediaSessionManager.OnActiveSessionsChangedListener sessionListener, 
                ComponentName notificationListener, 
                Handler handler)

Parameters
`sessionListener`	`MediaSessionManager.OnActiveSessionsChangedListener`: The listener to add. This value must never be `null`.
`notificationListener`	`ComponentName`: The enabled notification listener component. May be null. This value may be `null`.
`handler`	`Handler`: The handler to post events to. This value may be `null`.

getActiveSessions

added in API level 21

List<MediaController> getActiveSessions (ComponentName notificationListener)

Get a list of controllers for all ongoing sessions. The controllers will be provided in priority order with the most important controller at index 0.

This requires the android.Manifest.permission.MEDIA_CONTENT_CONTROL permission be held by the calling app. You may also retrieve this list if your app is an enabled notification listener using the NotificationListenerService APIs, in which case you must pass the ComponentName of your enabled listener.

Parameters
`notificationListener`	`ComponentName`: The enabled notification listener component. May be null. This value may be `null`.

Returns
`List<MediaController>`	A list of controllers for ongoing sessions. This value will never be `null`.

removeOnActiveSessionsChangedListener

added in API level 21

void removeOnActiveSessionsChangedListener (MediaSessionManager.OnActiveSessionsChangedListener listener)

Stop receiving active sessions updates on the specified listener.

Parameters
`listener`	`MediaSessionManager.OnActiveSessionsChangedListener`: The listener to remove. This value must never be `null`.

Jun	JUL	Aug
	18
2016	2017	2018

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Public methods

addOnActiveSessionsChangedListener

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removeOnActiveSessionsChangedListener

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