How to send notifications to one of two apps in the same project at firebase

Question

We have multiple apps at the same project of firebase like Master, Develop, testing.

And for sure every one of them has different users and we want to send to one ap

Answer 1

Lets say you currently have Apps: A, B, C All registered to:

• A: registered to FUN topic
• B: registered to FUN topic
• C: registered to FUN topic

All you need to do is to register them to another topic individualy for identifying them, like this:

• A: registered to FUN topic and to APPA topic
• B: registered to FUN topic and to APPB topic
• C: registered to FUN topic and to APPC topic

Now you can target the notification to be sent with a condition causing the notification to be targeted specifically to whatever you want, the following example targets notifications to whoever is subscribed to topic: FUN and APPB:

https://fcm.googleapis.com/fcm/send
Content-Type:application/json
Authorization:key=AIzaSyZ-1u...0GBYzPu7Udno5aA
{
  "condition": "'FUN' in topics && 'APPB' in topics",
  "data": {
    "message": "This is a Firebase Cloud Messaging Topic Message!",
   }
}

more on this can be found in this Firebase documentation page