So, after running a lot through trial and error method, I succeeded in getting Notifications.
Things to be noted:
- You cannot just integrate Firebase Cloud Notifications in library module.
- Client app module who will be using this library module will have
google-services.jsonfile in his directory and not in library module directory.
- Client app module gradle will be having below line in it and not in library module gradle:
apply plugin: ‘com.google.gms.google-services’
So, once I made those two changes, I was able to get Notifications.