Android 手机保持屏幕高亮

2015/01/26 39833

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  首先,在Activity里添加一下代码：

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成员变量：
private PowerManager.WakeLock wakeLock = null;
  
  
重写父类Activity的两个方法并添加一下逻辑：
  
@Override 
    public void onResume() {
        super.onResume();   
        acquireWakeLock(this); 
          
    } 
    
    @Override 
    public void onPause() { 
        super.onPause(); 
        releaseWakeLock(); 
          
    } 
    
  
    public void acquireWakeLock(Context context) { 
        if (wakeLock == null) { 
            PowerManager powerManager = (PowerManager) (context 
                    .getSystemService(Context.POWER_SERVICE)); 
            wakeLock = powerManager.newWakeLock( 
                    PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag"); 
            wakeLock.acquire(); 
        } 
    } 
    
  
    public void releaseWakeLock() { 
        if (wakeLock != null && wakeLock.isHeld()) { 
            wakeLock.release(); 
            wakeLock = null; 
        } 
    }

然后，在AndroidManifest.xml里添加如下权限即可：

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