Chih-Chung Chang | 91acfc9 | 2009-07-06 15:37:24 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 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 | |
Owen Lin | 482a3a5 | 2009-06-26 15:47:39 -0700 | [diff] [blame] | 17 | package com.android.camera; |
| 18 | |
| 19 | import android.app.Activity; |
| 20 | import android.os.Bundle; |
| 21 | |
| 22 | import java.util.ArrayList; |
| 23 | |
| 24 | public class MonitoredActivity extends Activity { |
| 25 | |
| 26 | private final ArrayList<LifeCycleListener> mListeners = |
| 27 | new ArrayList<LifeCycleListener>(); |
| 28 | |
| 29 | public static interface LifeCycleListener { |
| 30 | public void onActivityCreated(MonitoredActivity activity); |
| 31 | public void onActivityDestroyed(MonitoredActivity activity); |
Owen Lin | 482a3a5 | 2009-06-26 15:47:39 -0700 | [diff] [blame] | 32 | public void onActivityStarted(MonitoredActivity activity); |
| 33 | public void onActivityStopped(MonitoredActivity activity); |
| 34 | } |
| 35 | |
| 36 | public static class LifeCycleAdapter implements LifeCycleListener { |
| 37 | public void onActivityCreated(MonitoredActivity activity) { |
| 38 | } |
| 39 | |
| 40 | public void onActivityDestroyed(MonitoredActivity activity) { |
| 41 | } |
| 42 | |
Owen Lin | 482a3a5 | 2009-06-26 15:47:39 -0700 | [diff] [blame] | 43 | public void onActivityStarted(MonitoredActivity activity) { |
| 44 | } |
| 45 | |
| 46 | public void onActivityStopped(MonitoredActivity activity) { |
| 47 | } |
| 48 | } |
| 49 | |
| 50 | public void addLifeCycleListener(LifeCycleListener listener) { |
| 51 | if (mListeners.contains(listener)) return; |
| 52 | mListeners.add(listener); |
| 53 | } |
| 54 | |
| 55 | public void removeLifeCycleListener(LifeCycleListener listener) { |
| 56 | mListeners.remove(listener); |
| 57 | } |
| 58 | |
| 59 | @Override |
| 60 | protected void onCreate(Bundle savedInstanceState) { |
| 61 | super.onCreate(savedInstanceState); |
| 62 | for (LifeCycleListener listener : mListeners) { |
| 63 | listener.onActivityCreated(this); |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | @Override |
| 68 | protected void onDestroy() { |
| 69 | super.onDestroy(); |
| 70 | for (LifeCycleListener listener : mListeners) { |
| 71 | listener.onActivityDestroyed(this); |
| 72 | } |
| 73 | } |
| 74 | |
| 75 | @Override |
| 76 | protected void onStart() { |
| 77 | super.onStart(); |
| 78 | for (LifeCycleListener listener : mListeners) { |
| 79 | listener.onActivityStarted(this); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | @Override |
| 84 | protected void onStop() { |
| 85 | super.onStop(); |
| 86 | for (LifeCycleListener listener : mListeners) { |
| 87 | listener.onActivityStopped(this); |
| 88 | } |
| 89 | } |
| 90 | } |