Firebase 通知未以高优先级发送

Question

当我通过 Firebase 网络界面向我的 Android 设备发送通知时，通知不会从状态栏向下显示。如果我想看到通知，我必须向下滑动。即使我在 Web 界面中将优先级设置为 High，也会发生这种情况。这是为什么？

如果通知在应用程序打开时到达，这不是问题，因为我可以在 FirebaseMessagingService class:

中自己设置优先级

public class MyFirebaseMessagingService extends FirebaseMessagingService {

  @Override public void onMessageReceived(RemoteMessage remoteMessage) {
    super.onMessageReceived(remoteMessage);
    sendNotification("Message Body");

  }

  /**
   * Create and show a simple notification containing the received FCM message.
   *
   * @param messageBody FCM message body received.
   */
  private void sendNotification(String messageBody) {
    Intent intent = new Intent(this, SubscribedActivity.class);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
        PendingIntent.FLAG_ONE_SHOT);

    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
        .setSmallIcon(R.drawable.ic_push_notification)
        .setContentTitle("FCM Message")
        .setContentText(messageBody)
        .setAutoCancel(true)
        .setSound(defaultSoundUri)
        .setPriority(NotificationCompat.PRIORITY_MAX)
        .setColor(ContextCompat.getColor(this, R.color.color_accent))
        .setContentIntent(pendingIntent);

    NotificationManager notificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
  }
}

Answer 1

当应用程序打开时，您正在处理自己的通知，因此您可以控制它的功能。然而，当应用程序在后台时，通知由系统托盘处理，您可以从 Web 控制台传递的唯一优先级参数是高和正常。但是，如果用户不与您的应用程序交互，那么将优先级传递得如此之高将无法按预期工作。 Documentation

High priority messages generally should result in user interaction with your app. If FCM detects a pattern in which they don't, your messages may be de-prioritized.

Firebase 通知未以高优先级发送

Firebase notifications are not sending as high priority

android

firebase

firebase-notifications