Android app not receiving Firebase Notification when app is stopped from multi-task tray

Question

I have read a similar question on SO, however, I was not able to get the correct answer from it.

I have a system wherein we send notification to around 500 devices.<

Answer 1

Answer was found here

There are no way to send data message from notification console.

But there are other way to send notification to devices and them will be catch inside onMessageReceived!

You need can use terminal (Mac or Linux) or some service like Postman to send Post request on this link: https://fcm.googleapis.com/fcm/send

with the next body:

{
    "to": "/topics/your_topic_here",
   "data": {
       "text":"text",
       "text1":"text1",
       ...
   }
}

also you need to add 2 headers:

1. Authorization - key=your_server_key_here
2. Content-Type - application/json

To get your server key, you can find it in the firebase console: Your project -> settings -> Project settings -> Cloud messaging -> Server Key