Android 手机保持屏幕高亮详解编程语言

  首先,在Activity里添加一下代码：

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：

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