让屏幕保持一直亮

 @Override    protected void onCreate(Bundle icicle) {        super.onCreate(icicle);        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);    }

最好别用

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

Activity:

PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);PowerManager.WakeLock mWakeLock = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");mWakeLock.acquire();// ...mWakeLock.release();

因为此种方法在周期循环的时候会出现异常