应用程序在后台时更新Firebase推送通知

Question

当应用程序在后台时，如何更新包含数据负载的Firebase推送通知？有没有办法在通知中指定通知id给Firebase API？

{
"registration_ids": ["device id"], 
"collapse_key": "Updates Available"
"notification": {
                    "title": "title", 
                    "desc": "description",
                    "body": "Message received", 
                    "sound": "TYPE_NOTIFICATION",
                    "click_action": "sometargetAction"
                },
"data":         {
                    "user": 
                    {
                        "id": 2
                        "name":"leapingwolf", 
                        "occupation": "passionate coder"
                    }
                }
}

        User user = remoteMessage.getData().get("user");
        Gson gson = new GsonBuilder().create();
        User userModel =  gson.fromJson(user, User.class);
        Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setContentTitle("FCM Message With Payload")
                .setContentText(messageBody)
                .setSmallIcon(R.mipmap.ic_launcher)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent);

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

        notificationManager.notify(userModel.getId(), notificationBuilder.build());

完整的项目在github https://github.com/akshatashan/FireBaseCloudMessagingDemo中

Answer 1

我想出的解决方案是基于链接中的答案，如何处理通知当应用程序在后台在Firebase

总之，如果请求json没有notification标记，那么无论应用程序是否在后台，都会调用onMessageReceived。发送数据标记中的所有相关字段，并在OnMessageReceived中解析它。