Send notification to only one user in firebase [closed]

Question

I have an android app and I want to send notifications to only one user when data is change. How can I do that? I don't want to send my message to all users of my app, just the user whose data changed.

Since Firebase returns a unique registration token created for every device after client initialization, is there any way to send the notification to a particular user or only to a group of Users using that token?

Answer 1

You can make topic for this user and subscribe to that topic then Firebase allow us to send message to specific topic using topic message. Kindly Look at this link

https://firebase.google.com/docs/cloud-messaging/android/topic-messaging

and this

How to send notification to specific users with FCM?

Hope it will help .