当我的应用程序收到通知时，打开屏幕背光

Question

当我的应用程序收到通知时，我需要打开屏幕背光。 我得到了声音，LED指示灯亮起并震动了，但屏幕保持关闭状态。

我尝试使用PowerManager：

PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, "My Tag");
wl.acquire();
..screen will stay on during this section..
wl.release();

但是没有结果。

通知代码如下：

public void showNotification( String contentTitle, String contentText ) {
   int icon = R.drawable.notification;
   long when = System.currentTimeMillis();



   Notification notification = new Notification(icon, contentTitle, when);


   notification.flags |= Notification.FLAG_AUTO_CANCEL;
   notification.defaults |= Notification.DEFAULT_LIGHTS;




   Intent notificationIntent = new Intent(this, myapp.class);
   Context context = this.getApplicationContext();


   PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
   notification.setLatestEventInfo(this, contentTitle, contentText, contentIntent);

   NotificationManager nm = (NotificationManager)this.getSystemService(Context.NOTIFICATION_SERVICE);




   Vibrator v = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
   v.vibrate(300);

   notification.sound = Uri.parse("android.resource://" + context.getPackageName() + "/" + R.raw.sonar_ping);

   notification.flags |= Notification.FLAG_SHOW_LIGHTS;
   notification.ledARGB = 0x00000000;
   notification.ledOnMS = 0;
   notification.ledOffMS = 0;

   nm.notify(1, notification);




}  

通知出现在状态栏中时如何打开屏幕？ 为此，我需要添加什么？

感谢您的任何建议和帮助。

Answer 1

尝试这个

PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock wakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK |
            PowerManager.ACQUIRE_CAUSES_WAKEUP |
            PowerManager.ON_AFTER_RELEASE, "WakeLock");
    wakeLock.acquire();

并且不要忘记释放它。