How to save the Firebase Authentication credential?

Question

I want user to login only once in the system, any users who have already signed up or logged in into the system should directly navigate to the dashboard of the android app. How can i do that?

Answer 1

Don't need to try it manually because Firebase stores automatically your login credentials(with your sign in Session) when you sign in with your Google account.

when your 1st activity starts you can check it in How Re-authenticate a user

FirebaseAuth.getInstance().getCurrentUser()

read firebase auth Persistence documentation