PowerManager.WakeLock手机待机后不工作2+秒

我有一个服务（SkService）用于通过监视ACCELEROMETER从待机状态唤醒我的Nexus4（运行Android 4.2.2），但它不工作时手机将进入待机状态2秒钟。在以下两种情况下，它适用于我： 1.手机在按下电源键后立即振动。 2.手机连接到我的笔记本电脑PowerManager.WakeLock手机待机后不工作2+秒

我不知道为什么。赞赏如果有人能帮助我！这里的关键代码：

public class SkService extends Service { 
private ShakeDetector mShakeDetector; 

@Override 
public void onCreate() { 
    mShakeDetector = new ShakeDetector(SkService.this); 
    mShakeDetector.setOnShakeListener(new onShakeListener() { 
     @Override 
     public void onShake(String value) { 
      Log.d(TAG, "Get onShake event with value:" + value); 
      Locker.acquireCpuWakeLock(SkService.this); 
      Locker.releaseWakeLock(); 
     } 
    }); 
    mShakeDetector.registerListener(); 
} 

@Override 
public void onDestroy() { 
    Log.d(TAG, "SkService on Destroy"); 
    mShakeDetector.unRegisterListener(); 
    super.onDestroy(); 
} 

@Override 
public IBinder onBind(Intent intent) { 
    return null; 
} 
    }

储物柜：

public class Locker { 

private static PowerManager.WakeLock sCpuWakeLock; 

public static void acquireCpuWakeLock(Context context) { 
    Log.d(TAG, "Acquiring cpu wake lock"); 
    if (sCpuWakeLock != null) { 
     return; 
    } 
    PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 
    KeyguardManager km = (KeyguardManager) context.getSystemService(Context.KEYGUARD_SERVICE); 

    KeyguardManager.KeyguardLock kl = km.newKeyguardLock("SKUnlock KeyGuard"); 
    Log.d(TAG, "Disable keyguard..."); 
    kl.disableKeyguard(); 
    Log.d(TAG, "Keyguard disabled and unlock the screen..."); 

    sCpuWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP 
      | PowerManager.ON_AFTER_RELEASE, "SKUnlock"); 

    sCpuWakeLock.acquire(); 
    Log.d(TAG, "WakeLock acqiured done"); 
} 

public static void releaseWakeLock() { 
    if (sCpuWakeLock == null) 
     return; 
    sCpuWakeLock.release(); 
    sCpuWakeLock = null; 
    Log.d(TAG, "WakeLock released"); 
} 
    }

我得到了以下日志时，它的工作原理：

04-04 20:23:34.013 D/com.skunlock(31730): Get onShake event with value:Shook 0 times: 
    04-04 20:23:34.013 D/com.skunlock(31730): diffTime=64,speed=1588.15. x=2.79, y=-3.25,z=15.27,dX=4.52,dY=4.21,Dirc=Left to Right,accuracy2 
    04-04 20:23:34.013 D/com.skunlock(31730): Acquiring cpu wake lock 
    04-04 20:23:34.013 D/com.skunlock(31730): Disable keyguard... 
    04-04 20:23:34.013 D/com.skunlock(31730): Keyguard disabled and unlock the screen... 
    04-04 20:23:34.013 I/PowerManagerService( 525): Waking up from sleep... 
    04-04 20:23:34.023 D/com.skunlock(31730): WakeLock acqiured done 
    04-04 20:23:34.023 D/com.skunlock(31730): WakeLock released 
    04-04 20:23:34.023 I/WindowManager( 525): No lock screen! 
    04-04 20:23:34.043 D/SurfaceFlinger( 158): Screen acquired, type=0 flinger=0x41634318 
    04-04 20:23:34.043 D/hwcomposer( 158): hwc_blank: Doing Dpy=0, blank=0 
    04-04 20:23:34.123 D/hwcomposer( 158): hwc_blank: Done Dpy=0, blank=0 
    04-04 20:23:34.143 D/overlay ( 158): Set pipe=RGB0 dpy=0; Set pipe=RGB1 dpy=0; Set pipe=VG0 dpy=0; Set pipe=VG1 dpy=0;

但是我只拿到了我的应用程序时，打印日志它不工作，没有任何系统日志（说，没有锁屏）：

04-04 20:23:34.333 D/com.skunlock(31730): Get onShake event with value:Shook 0 times: 
    04-04 20:23:34.333 D/com.skunlock(31730): diffTime=64,speed=2482.65. x=-1.73, y=-0.91,z=2.05,dX=2.22,dY=7.01,Dirc=Up to Down,accuracy2 
    04-04 20:23:34.333 D/com.skunlock(31730): Acquiring cpu wake lock 
    04-04 20:23:34.333 D/com.skunlock(31730): Disable keyguard... 
    04-04 20:23:34.333 D/com.skunlock(31730): Keyguard disabled and unlock the screen... 
    04-04 20:23:34.333 D/com.skunlock(31730): WakeLock acqiured done 
    04-04 20:23:34.333 D/com.skunlock(31730): WakeLock released 
    04-04 20:23:34.524 D/com.skunlock(31730): Get onShake event with value:Shook 0 times:

来源

2013-04-04 user2244933

考虑使用WakefulBroadcastReceiver，它负责为您创建和管理部分唤醒锁。

你仍然需要使用在清单中的权限：

<uses-permission android:name="android.permission.WAKE_LOCK" />

来源

2014-08-19 18:37:37

PowerManager.WakeLock手机待机后不工作2+秒

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