【 Android】使手机屏幕常亮,不进入待机状态

Android中,申请WakeLock可以让你的进程持续执行即使手机进入睡眠模式,比较实用的是比如后台有网络功能,可以保证操作持续进行. 

需要权限

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

 API

Flag Value CPU Screen Keyboard
PARTIAL_WAKE_LOCK On* Off Off
SCREEN_DIM_WAKE_LOCK On Dim Off
SCREEN_BRIGHT_WAKE_LOCK On Bright Off
FULL_WAKE_LOCK On Bright Bright

 

  PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); 

            wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, Constants.TAG); 
        //打开 wakeLock.acquire();
        //关闭
          if (wakeLock != null) { 
                wakeLock.release(); 
                wakeLock = null; 
            } 

    

另一种方法是 

@Override   

    protected void onCreate(Bundle bundle) {   

        super .onCreate(bundel);   

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);   

    //or
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON,WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); }

 

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