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 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, Log.LOGTAG); 32 } 33 34 public static void acquireCpuWakeLock(Context context) { 35 if (sCpuWakeLock != null) { 36 return; 37 } 38 39 sCpuWakeLock = createPartialWakeLock(context); 40 sCpuWakeLock.acquire(); 41 } 42 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, Log.LOGTAG); 50 sCpuWakeLock.acquire(); 51 } 52 53 public static void releaseCpuLock() { 54 if (sCpuWakeLock != null) { 55 sCpuWakeLock.release(); 56 sCpuWakeLock = null; 57 } 58 } 59 } 60
