Firebase通知不在后台工作 [英] Firebase Notification not working in background

问题描述

我需要帮助。 Firebase通知不在后台工作。这是我的代码：

  @Override 
 public void onMessageReceived（RemoteMessage remoteMessage）{
 
 Log.d（TAG，FROM：+ remoteMessage.getFrom（））; 
 sharedPreference = getSharedPreferences（Global.SECURETRADE，0）; 
 UID = sharedPreference.getString（Global.ID，）; 
 
 
 Uri defaultSoundUri = RingtoneManager.getDefaultUri（RingtoneManager.TYPE_NOTIFICATION）`在此输入代码`; 
 
 NotificationCompat.Builder notificationBuilder = new 
 NotificationCompat.Builder（this）; 
 
 if（android.os.Build.VERSION.SDK_INT> = Build.VERSION_CODES.LOLLIPOP）{
 
 notificationBuilder.setSmallIcon（R.mipmap.small_secure_trade_app_icon）; 
 
} else {
 
 notificationBuilder.setSmallIcon（R.drawable.small_secure_trade_app_icon）; 
} 
 
 notificationBuilder.setLargeIcon（BitmapFactory.decodeResource（this.getResources（），R.drawable.securetrade_icon））; 
 notificationBuilder.setContentTitle（remoteMessage.getData（）。get（title））; 
 notificationBuilder.setContentText（remoteMessage.getData（）。get（body））; 
 notificationBuilder.setAutoCancel（true）; 
 notificationBuilder.setSound（defaultSoundUri）; 
 notificationBuilder.setContentIntent（pendingIntent）; 
 
 NotificationManager notificationManager = 
（NotificationManager）
 getSystemService（Context.NOTIFICATION_SERVICE）; 
 
 notificationManager.notify（0，notificationBuilder.build（））; 
 
 
 
 
 
 
 $ / code $ / pre $ b您是否正在发送数据消息（而不是通知消息）？
    
 $ b 
 通知消息不要调用 onMessageReceived（） 
 
 
当您希望FCM处理代表客户端应用程序显示
通知时使用通知消息。当您
想要处理客户端应用程序中的消息时使用数据消息。
 
阅读更多： https://firebase.google.com/docs/cloud-messaging/concept-options#通知和数据消息 
 
 
 
 PS：FCM Web控制台始终发送通知消息
 
 
 
 
 
如果您正在发送数据消息，并且 onMessageReceived（）未被调用... 
 
则是一个不同的问题。
 
 
它甚至可能是特定设备的问题。
 
请参阅 
 
I need help. Firebase Notifications is Not Working in Background. This is My Code:
@Override
public void onMessageReceived(RemoteMessage remoteMessage) {

    Log.d(TAG, "FROM:" + remoteMessage.getFrom());
   sharedPreference = getSharedPreferences(Global.SECURETRADE, 0);
    UID = sharedPreference.getString(Global.ID, "");


        Uri defaultSoundUri=RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)`enter code here`;

        NotificationCompat.Builder notificationBuilder = new
                NotificationCompat.Builder(this);

        if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            notificationBuilder.setSmallIcon(R.mipmap.small_secure_trade_app_icon);

        } else {

            notificationBuilder.setSmallIcon(R.drawable.small_secure_trade_app_icon);
        }

        notificationBuilder.setLargeIcon(BitmapFactory.decodeResource(this.getResources(), R.drawable.securetrade_icon));
        notificationBuilder.setContentTitle(remoteMessage.getData().get("title"));
        notificationBuilder.setContentText(remoteMessage.getData().get("body"));
        notificationBuilder.setAutoCancel(true);
        notificationBuilder.setSound(defaultSoundUri);
        notificationBuilder.setContentIntent(pendingIntent);

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

        notificationManager.notify(0, notificationBuilder.build());

    }




}

解决方案
Are you sending data-messages (not notification-messages) ?

notification-messages don't call onMessageReceived()

  
Use notification messages when you want FCM to handle displaying a
  notification on your client app's behalf. Use data messages when you
  want to process the messages on your client app.
Read more here: https://firebase.google.com/docs/cloud-messaging/concept-options#notifications_and_data_messages

PS: FCM Web Console always sends notification-messages



If you are sending a data-messages, and onMessageReceived() is not called...

then it's a different problem.

It might even be a problem of that specific device.

See Push notifications using FCM not received when app is killed android

                        
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