1 /*
2  * Copyright (C) 2008 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 com.android.deskclock;
18 
19 import android.content.Context;
20 import android.os.PowerManager;
21 
22 /**
23  * Utility class to hold wake lock in app.
24  */
25 public class AlarmAlertWakeLock {
26 
27     private static PowerManager.WakeLock sCpuWakeLock;
28 
createPartialWakeLock(Context context)29     public static PowerManager.WakeLock createPartialWakeLock(Context context) {
30         PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
31         return pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, LogUtils.LOGTAG);
32     }
33 
acquireCpuWakeLock(Context context)34     public static void acquireCpuWakeLock(Context context) {
35         if (sCpuWakeLock != null) {
36             return;
37         }
38 
39         sCpuWakeLock = createPartialWakeLock(context);
40         sCpuWakeLock.acquire();
41     }
42 
acquireScreenCpuWakeLock(Context context)43     public static void acquireScreenCpuWakeLock(Context context) {
44         if (sCpuWakeLock != null) {
45             return;
46         }
47         PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
48         sCpuWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK
49                 | PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE, LogUtils.LOGTAG);
50         sCpuWakeLock.acquire();
51     }
52 
releaseCpuLock()53     public static void releaseCpuLock() {
54         if (sCpuWakeLock != null) {
55             sCpuWakeLock.release();
56             sCpuWakeLock = null;
57         }
58     }
59 }
60