public static PowerManager.WakeLock wakeUpScreen(Context context) {
        PowerManager powerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
        PowerManager.WakeLock wakeLook = powerManager.newWakeLock(
            PowerManager.SCREEN_DIM_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, "LocalNotification");
        wakeLook.acquire();
        return wakeLook;
    }
Wake up the screen and returns a WakeLock, which have to be release, after the work is done.
@return WakeLock, which have to be release, after the work is done.
src/android/Manager.java