1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package android.app; 18 19 import android.os.Bundle; 20 import android.os.IRemoteCallback; 21 import android.os.RemoteException; 22 23 /** 24 * Base class for synchronous implementations of {@link IUserSwitchObserver} 25 * 26 * @hide 27 */ 28 public abstract class SynchronousUserSwitchObserver extends UserSwitchObserver { 29 /** 30 * Calls {@link #onUserSwitching(int)} and notifies {@code reply} by calling 31 * {@link IRemoteCallback#sendResult(Bundle)}. 32 */ 33 @Override onUserSwitching(int newUserId, IRemoteCallback reply)34 public final void onUserSwitching(int newUserId, IRemoteCallback reply) throws RemoteException { 35 try { 36 onUserSwitching(newUserId); 37 } finally { 38 if (reply != null) { 39 reply.sendResult(null); 40 } 41 } 42 } 43 44 /** 45 * Synchronous version of {@link IUserSwitchObserver#onUserSwitching(int, IRemoteCallback)} 46 */ onUserSwitching(int newUserId)47 public abstract void onUserSwitching(int newUserId) throws RemoteException; 48 } 49