How to get user data from android fire database notifications?

Question

I am trying to implement firewall notifications. But it's hard for me to find any documentation on how to extract user data from firebase notifications.

But in the code, how to get a user key.

I am using FirebaseMessagingService.onMessageReceived to receive message data.

 @Override public void onMessageReceived(RemoteMessage remoteMessage) { // TODO(developer): Handle FCM messages here. // If the application is in the foreground handle both data and notification messages here. // Also if you intend on generating your own notifications as a result of a received FCM // message, here is where that should be initiated. See sendNotification method below. Log.d(TAG, "From: " + remoteMessage.getFrom()); Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody()); } 

Answer 1

You can check your user data using:

 for (Map.Entry<String, String> entry : remoteMessage.getData().entrySet()) { String key = entry.getKey(); String value = entry.getValue(); Log.d(TAG, "key, " + key + " value " + value); } 

To get a specific key:

 String value = remoteMessage.getData().get("<YOUR_KEY>"); 

Answer 2

Let A be your key, then you can easily analyze this value using the following code.

 JSONObject json = new JSONObject(remoteMessage.getData()); Iterator itr = json.keys(); while (itr.hasNext()) { String key = (String) itr.next(); if (key.equals("A")) { flag = json.getString(key); } Log.d(TAG, "..." + key + " => " + json.getString(key)); }