Firebase推送通知更新数据库 [英] Firebase push notifications update DB

问题描述

我试图通过新的Firebase推送通知服务向用户发送一些数据。我添加了一些键值自定义数据项与消息文本 - dbupdate来检测是否是一个更新消息或正常的推送通知，我想要显示我的用户。

在我的接收器中，我检查是否有自定义数据并运行更新，如果为true。
如果不是这种情况，我会显示一条正常的短信通知。

仅当我的应用程序打开时才有效。如果应用程序已关闭，通知会显示，我的if检查甚至没有运行，

一些代码：

  public class PushMessageService extends FirebaseMessagingService {
 @Override 
 public void onMessageReceived（RemoteMessage remoteMessage）{
 super.onMessageReceived remoteMessage）; 
 Map< String，String> data = remoteMessage.getData（）; 
 String link = data.get（link）; 
 String name = data.get（name）; 
 if（link！= null）{
 Log.d（link，link）; 
 Log.d（name，name）; 
 UpdateHelper.Go（this，link，name）; 
 
 $ {
 NotificationCompat.Builder mBuilder = 
 NotificationCompat.Builder（this）
 .setSmallIcon（R.drawable.ic_shop_white_24dp）
 .setAutoCancel （true）
 .setContentTitle（remoteMessage.getNotification（）。getTitle（））
 .setContentText（remoteMessage.getNotification（）。getBody（））; 
 NotificationManager mNotificationManager = 
（NotificationManager）getSystemService（Context.NOTIFICATION_SERVICE）; 
 mNotificationManager.notify（5，mBuilder.build（））; 
 
 
 
 
 
示例notficiation 
  
 
 
 
解决方案：
 
 
发送推送消息有两种方法。  
 
 
  1。 Firebase控制台 
 
 
 
   
 
 
  2。 Messaging API   - 使用高级REST客户端显示请求的图像 
 
 
  
 
 
 
消息在 onMessageReceived（...）方法中收到。 Firebase  onMessageReceived（...）方法将不是调用如果应用程序处于仅当通过Firebase控制台发送消息时。  
 
 
如果您通过API发送邮件，它工作正常。消息是在 onMessageReceived（...）方法中传递的，无论应用程序是在后台还是在前台或是被终止。 （注意：在> = Lollipop 中工作正常 -  Android 4.4或更低版本的行为仍然不可预测。
 
 
 
 更新：  
 
 
您可以从API（firebase称为下游msg）发送推送消息，如下所示：https://firebase.google.com/docs/cloud-messaging/downstream  
 
 
 
从服务器发送下游消息
 
 
 
为了解决或定位下游消息，应用程序服务器设置为接收客户端应用程序的注册令牌。包含预定义字段的通知消息或自定义数据消息;有关负载支持的详细信息，请参阅消息负载中的通知和数据。本页中的示例显示如何使用HTTP和XMPP协议发送数据消息。
 
 
 HTTP POST请求
 
 
 
  https://fcm.googleapis.com/fcm/send 
 Content-Type：application / json 
 Authoriz ation：key = AIzaSyZ-1u ... 0GBYzPu7Udno5aA 
 
 {data：{
score：5x1，
time：15:10 
}，
to：bk3RNwTe3H0：CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1 ...
} 
  
 
I'm trying to send some data to my users via the new Firebase push notifications service.

I'm adding some "key-value" custom data items with 'Message text' -  "dbupdate" to detect if it's an update message or a normal push notification that I want to show my users. 

In my receiver I check i there is custom data and run the update, if true.
If this isn't the case, I show a normal notification with the text message.

It works only when my application opened. If the application is closed, the notification is shown anyway, and my if check doesn't even running, 

some code:
public class PushMessageService extends FirebaseMessagingService {
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
        Map<String,String> data = remoteMessage.getData();
        String link = data.get("link");
        String name = data.get("name");
        if (link!=null) {
            Log.d("link",link);
            Log.d("name",name);
            UpdateHelper.Go(this, link, name);
        }
        else {
            NotificationCompat.Builder mBuilder =
                    new NotificationCompat.Builder(this)
                            .setSmallIcon(R.drawable.ic_shop_white_24dp)
                            .setAutoCancel(true)
                    .setContentTitle(remoteMessage.getNotification().getTitle())
                   .setContentText(remoteMessage.getNotification().getBody());
            NotificationManager mNotificationManager =
                    (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            mNotificationManager.notify(5, mBuilder.build());
        }
    }
}
example notficiation 
here

Why is that so? What can I do to run my code even when the application closed?
解决方案
As per my experience with Firebase push: 

Problem: When sending push notification through "Firebase console", notification is only received when application is in foreground. If the application is killed or in background, the notification is shown only in Version >= lollipop with incorrect notification icon and/or opening the default launcher activity in the app even if you have defined different Activity in PendingIntent.

As per Firebase docs, a push message is divided into 2 pars, they call them: Docs Link here

notification
data payload


Solution:

There are two ways to send a "Push" message. 

1. Firebase Console 



2. Messaging API - Image showing a request using Advanced REST Client



Push message is received in onMessageReceived(...) method. Firebase onMessageReceived(...) method will not get called if the app is in background or killed only when the message is sent through Firebase Console. 

If you send the message via API, it works fine. Message is delivered in onMessageReceived(...) method whether app is in background, foreground or killed. (Caution: This is working fine in >=Lollipop - Behaviour for Android 4.4 or below is still unpredictable.

Update: 

You can send a push message from API (firebase call it downstream msg) like this: https://firebase.google.com/docs/cloud-messaging/downstream

Sending downstream messages from the server

To address or "target" a downstream message, the app server sets to with the receiving client app's registration token. You can send notification messages with predefined fields, or custom data messages; see Notifications and data in the message payload for details on payload support. Examples in this page show how to send data messages in HTTP and XMPP protocols.

HTTP POST Request

https://fcm.googleapis.com/fcm/send
Content-Type:application/json
Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA

{ "data": {
    "score": "5x1",
    "time": "15:10"
  },
  "to" : "bk3RNwTe3H0:CI2k_HHwgIpoDKCIZvvDMExUdFQ3P1..."
}


                        
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