I have an app with 3 sign in methods: Google, Facebook & mail. I want to show the users that are signed in with mail a different screen. Is it possible to get the sign in method form the package firebase authentication?
I know I can fix this by using firestore & checking if a statement is true or false. But that will cost me a read every time a user opens the app...
This seems to be what you want: https://firebase.google.com/docs/reference/android/com/google/firebase/auth/FirebaseUser.html#getProviderData()
In my app where I use Google logins only, I have firebaseUser.providerData[1].providerId == 'google.com'.
Btw, firebaseUser.providerData[0].providerId == 'firebase'.
I guess you could check them all and look for what providers you get for different kinds of users.
Edit: here's what I get when logging in with e-mail: https://postimg.cc/BXWGGN6h
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