Merge "Unregister MediaListener on view detached" into rvc-dev am: 61b5936007 (79e63a67) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/media/MediaControlPanel.java

+49 −10

Original line number	Diff line number	Diff line
		@@ -37,6 +37,7 @@ import android.util.Log;
		import android.view.KeyEvent;
		import android.view.LayoutInflater;
		import android.view.View;
		import android.view.View.OnAttachStateChangeListener;
		import android.view.ViewGroup;
		import android.widget.ImageButton;
		import android.widget.ImageView;
		@@ -53,6 +54,8 @@ import com.android.systemui.Dependency;
		import com.android.systemui.R;
		import com.android.systemui.plugins.ActivityStarter;
		import com.android.systemui.statusbar.NotificationMediaManager;
		import com.android.systemui.statusbar.NotificationMediaManager.MediaListener;
		import com.android.systemui.util.Assert;

		import java.util.List;
		import java.util.concurrent.Executor;
		@@ -60,7 +63,7 @@ import java.util.concurrent.Executor;
		/**
		* Base media control panel for System UI
		*/
		public class MediaControlPanel implements NotificationMediaManager.MediaListener {
		public class MediaControlPanel {
		private static final String TAG = "MediaControlPanel";
		private final NotificationMediaManager mMediaManager;
		private final Executor mForegroundExecutor;
		@@ -74,6 +77,7 @@ public class MediaControlPanel implements NotificationMediaManager.MediaListener
		private int mForegroundColor;
		private int mBackgroundColor;
		protected ComponentName mRecvComponent;
		private boolean mIsRegistered = false;

		private final int[] mActionIds;

		@@ -86,12 +90,34 @@ public class MediaControlPanel implements NotificationMediaManager.MediaListener
		com.android.internal.R.id.action4
		};

		private MediaController.Callback mSessionCallback = new MediaController.Callback() {
		private final MediaController.Callback mSessionCallback = new MediaController.Callback() {
		@Override
		public void onSessionDestroyed() {
		Log.d(TAG, "session destroyed");
		mController.unregisterCallback(mSessionCallback);
		clearControls();
		makeInactive();
		}
		};

		private final MediaListener mMediaListener = new MediaListener() {
		@Override
		public void onMetadataOrStateChanged(MediaMetadata metadata, int state) {
		if (state == PlaybackState.STATE_NONE) {
		clearControls();
		makeInactive();
		}
		}
		};

		private final OnAttachStateChangeListener mStateListener = new OnAttachStateChangeListener() {
		@Override
		public void onViewAttachedToWindow(View unused) {
		makeActive();
		}
		@Override
		public void onViewDetachedFromWindow(View unused) {
		makeInactive();
		}
		};

		@@ -111,6 +137,12 @@ public class MediaControlPanel implements NotificationMediaManager.MediaListener
		mContext = context;
		LayoutInflater inflater = LayoutInflater.from(mContext);
		mMediaNotifView = (LinearLayout) inflater.inflate(layoutId, parent, false);
		// TODO(b/150854549): removeOnAttachStateChangeListener when this doesn't inflate views
		// mStateListener shouldn't need to be unregistered since this object shares the same
		// lifecycle with the inflated view. It would be better, however, if this controller used an
		// attach/detach of views instead of inflating them in the constructor, which would allow
		// mStateListener to be unregistered in detach.
		mMediaNotifView.addOnAttachStateChangeListener(mStateListener);
		mMediaManager = manager;
		mActionIds = actionIds;
		mForegroundExecutor = foregroundExecutor;
		@@ -236,9 +268,7 @@ public class MediaControlPanel implements NotificationMediaManager.MediaListener
		});
		}

		// Ensure is only added once
		mMediaManager.removeCallback(this);
		mMediaManager.addCallback(this);
		makeActive();
		}

		/**
		@@ -422,11 +452,20 @@ public class MediaControlPanel implements NotificationMediaManager.MediaListener
		btn.setVisibility(View.VISIBLE);
		}

		@Override
		public void onMetadataOrStateChanged(MediaMetadata metadata, int state) {
		if (state == PlaybackState.STATE_NONE) {
		clearControls();
		mMediaManager.removeCallback(this);
		private void makeActive() {
		Assert.isMainThread();
		if (!mIsRegistered) {
		mMediaManager.addCallback(mMediaListener);
		mIsRegistered = true;
		}
		}

		private void makeInactive() {
		Assert.isMainThread();
		if (mIsRegistered) {
		mMediaManager.removeCallback(mMediaListener);
		mIsRegistered = false;
		}
		}

		}