/*
 * Copyright (C) 2016 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.app;

import android.app.ActivityManager.TaskSnapshot;
import android.content.ComponentName;
import android.os.RemoteException;

Classes interested in observing only a subset of changes using ITaskStackListener can extend this class to avoid having to implement all the methods.
@hide
/** * Classes interested in observing only a subset of changes using ITaskStackListener can extend * this class to avoid having to implement all the methods. * @hide */
public abstract class TaskStackListener extends ITaskStackListener.Stub { @Override public void onTaskStackChanged() throws RemoteException { } @Override public void onActivityPinned(String packageName, int userId, int taskId, int stackId) throws RemoteException { } @Override public void onActivityUnpinned() throws RemoteException { } @Override public void onPinnedActivityRestartAttempt(boolean clearedTask) throws RemoteException { } @Override public void onPinnedStackAnimationStarted() throws RemoteException { } @Override public void onPinnedStackAnimationEnded() throws RemoteException { } @Override public void onActivityForcedResizable(String packageName, int taskId, int reason) throws RemoteException { } @Override public void onActivityDismissingDockedStack() throws RemoteException { } @Override public void onActivityLaunchOnSecondaryDisplayFailed() throws RemoteException { } @Override public void onTaskCreated(int taskId, ComponentName componentName) throws RemoteException { } @Override public void onTaskRemoved(int taskId) throws RemoteException { } @Override public void onTaskMovedToFront(int taskId) throws RemoteException { } @Override public void onTaskRemovalStarted(int taskId) throws RemoteException { } @Override public void onTaskDescriptionChanged(int taskId, ActivityManager.TaskDescription td) throws RemoteException { } @Override public void onActivityRequestedOrientationChanged(int taskId, int requestedOrientation) throws RemoteException { } @Override public void onTaskProfileLocked(int taskId, int userId) throws RemoteException { } @Override public void onTaskSnapshotChanged(int taskId, TaskSnapshot snapshot) throws RemoteException { } }