Adds listeners for changes to the list of active sessions (2e7a9167) · Commits · e / os / android_frameworks_base

Android.mk

+9 −8

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		@@ -309,6 +309,7 @@ LOCAL_SRC_FILES += \
		media/java/android/media/routeprovider/IRouteConnection.aidl \
		media/java/android/media/routeprovider/IRouteProvider.aidl \
		media/java/android/media/routeprovider/IRouteProviderCallback.aidl \
		media/java/android/media/session/IActiveSessionsListener.aidl \
		media/java/android/media/session/ISessionController.aidl \
		media/java/android/media/session/ISessionControllerCallback.aidl \
		media/java/android/media/session/ISession.aidl \

media/java/android/media/session/IActiveSessionsListener.aidl

0 → 100644

+26 −0

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		/* Copyright (C) 2014 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package android.media.session;

		import android.media.session.MediaSessionToken;

		/**
		* Listens for changes to the list of active sessions.
		* @hide
		*/
		oneway interface IActiveSessionsListener {
		void onActiveSessionsChanged(in List<MediaSessionToken> sessions);
		}
		No newline at end of file

media/java/android/media/session/ISessionManager.aidl

+4 −0

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		@@ -16,6 +16,7 @@
		package android.media.session;

		import android.content.ComponentName;
		import android.media.session.IActiveSessionsListener;
		import android.media.session.ISession;
		import android.media.session.ISessionCallback;
		import android.os.Bundle;
		@@ -30,4 +31,7 @@ interface ISessionManager {
		List<IBinder> getSessions(in ComponentName compName, int userId);
		void dispatchMediaKeyEvent(in KeyEvent keyEvent, boolean needWakeLock);
		void dispatchAdjustVolumeBy(int suggestedStream, int delta, int flags);
		void addSessionsListener(in IActiveSessionsListener listener, in ComponentName compName,
		int userId);
		void removeSessionsListener(in IActiveSessionsListener listener);
		}
		No newline at end of file

media/java/android/media/session/MediaSessionManager.java

+75 −0

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		@@ -141,6 +141,50 @@ public final class MediaSessionManager {
		return controllers;
		}

		/**
		* 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
		* {@link NotificationListenerService} APIs, in which case you must pass the
		* {@link ComponentName} of your enabled listener.
		*
		* @param sessionListener The listener to add.
		* @param notificationListener The enabled notification listener component.
		* May be null.
		* @param userId The userId to listen for changes on.
		* @hide
		*/
		public void addActiveSessionsListener(SessionListener sessionListener,
		ComponentName notificationListener, int userId) {
		if (sessionListener == null) {
		throw new IllegalArgumentException("listener may not be null");
		}
		try {
		mService.addSessionsListener(sessionListener.mStub, notificationListener, userId);
		} catch (RemoteException e) {
		Log.e(TAG, "Error in addActiveSessionsListener.", e);
		}
		}

		/**
		* Stop receiving active sessions updates on the specified listener.
		*
		* @param listener The listener to remove.
		* @hide
		*/
		public void removeActiveSessionsListener(SessionListener listener) {
		if (listener == null) {
		throw new IllegalArgumentException("listener may not be null");
		}
		try {
		mService.removeSessionsListener(listener.mStub);
		} catch (RemoteException e) {
		Log.e(TAG, "Error in removeActiveSessionsListener.", e);
		}
		}

		/**
		* Send a media key event. The receiver will be selected automatically.
		*
		@@ -184,4 +228,35 @@ public final class MediaSessionManager {
		Log.e(TAG, "Failed to send adjust volume.", e);
		}
		}

		/**
		* Listens for changes to the list of active sessions. This can be added
		* using {@link #addActiveSessionsListener}.
		*
		* @hide
		*/
		public static abstract class SessionListener {
		/**
		* Called when the list of active sessions has changed. This can be due
		* to a session being added or removed or the order of sessions
		* changing.
		*
		* @param controllers The updated list of controllers for the user that
		* changed.
		*/
		public abstract void onActiveSessionsChanged(List<MediaController> controllers);

		private final IActiveSessionsListener.Stub mStub = new IActiveSessionsListener.Stub() {
		@Override
		public void onActiveSessionsChanged(List<MediaSessionToken> tokens)
		throws RemoteException {
		ArrayList<MediaController> controllers = new ArrayList<MediaController>();
		int size = tokens.size();
		for (int i = 0; i < size; i++) {
		controllers.add(MediaController.fromToken(tokens.get(i)));
		}
		SessionListener.this.onActiveSessionsChanged(controllers);
		}
		};
		}
		}

media/java/android/media/session/MediaSessionToken.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -31,7 +31,7 @@ public final class MediaSessionToken implements Parcelable {
		/**
		* @hide
		*/
		MediaSessionToken(ISessionController binder) {
		public MediaSessionToken(ISessionController binder) {
		mBinder = binder;
		}