Receiving the FCM notifications multiple times on Nougat

Question

I am using Firebase push notifications in my app. But when I am sending a notification for some event, I am getting notification\'s multiple times after 2-3 minutes on

Answer 1

Same thing was happening on me , I tried everything only in vain

Then i realised we were storing all fcm tokens of the android device from start till finish without validating or deleting them

I deleted all fcm tokens and re-logged in my app which inserted a fresh singular token in FCM tokens list in my server's db

It worked fine, I think FCM should invalidate earlier tokens before issuing new ones even across installs , multiple apks, and multiple apk debug sessions

Try to send to only 1 token , also clean build and reinstall your app