Firebase Authentication using email and google

Question

I'm using firebase in Android Studio with kotlin.

I want to know whether login account is email-register account or google social account.

As I know, if FirebaseAuth.getInstance().currentUser.providerId is "google.com", user used google social login.

And if providerId is "password", user used email register with firebase.

But only I can get "firebase" from providerId.

How can I solve it?

It it is neccessary for making login function.

I can get only "firebase" from providerId.

Answer 1

According to the API documentation , getProviderId() (or just providerId for Kotlin) will always return FirebaseAuthProvider#PROVIDER_ID (which is equal to "firebase" ).

If you want to determine which authentication channel was used to get this Firebase ID Token, you need to use getProviderData() which contains the UserInfo objects returned from the social logins.

val auth = FirebaseAuth.getInstance();
val hasLinkedGoogleUser = auth.providerData.any{ it.providerId == GoogleAuthProvider.PROVIDER_ID }