How to force google account chooser after sign out in android firebase auth

Question

I am using Firebase Google Auth, signing out and logging in again will log in with last signed account. How can I make account chooser every time?

Answer 1

Firebase Auth Quickstart sample code provides the following few steps for sign out

Declare Globally these two variables

private GoogleSignInClient mGoogleSignInClient;
private GoogleSignInOptions gso;

Add these lines in onCreate method

gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);

Now for signOut

private void signOut() {
        // Firebase sign out
        mAuth.signOut();

        // Google sign out
        mGoogleSignInClient.signOut().addOnCompleteListener(this,
                new OnCompleteListener<Void>() {
                    @Override
                    public void onComplete(@NonNull Task<Void> task) {
                        updateUI(null);
                    }
                });
    }

It's easy, and it will work. Cheers!