Change DisplayName in Firebase

Question

I am using email registration Firebase. As of now their is no option to set DisplayName in Firebase. So I am redirecting users to a class where they can change DisplayName s

Answer 1

You have to follow this option

@Override
protected void onStart() {
    super.onStart();
    firebaseAuth.addAuthStateListener(mAuthListener); //firebaseAuth is of class FirebaseAuth
}

@Override
protected void onStop() {
    super.onStop();
    if (mAuthListener != null) {
        firebaseAuth.removeAuthStateListener(mAuthListener);
    }
}

and in your OnCreate() or onCreateView() implment this:

firebaseAuth = FirebaseAuth.getInstance();
    mAuthListener = new FirebaseAuth.AuthStateListener() {
        @Override
        public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
            FirebaseUser user = firebaseAuth.getCurrentUser();
            if (user != null) {
                if (!LoginFragment.displayName.isEmpty()) {
                    UserProfileChangeRequest profileUpdates = new UserProfileChangeRequest.Builder()
                            .setDisplayName(LoginFragment.displayName).build();
                    user.updateProfile(profileUpdates).addOnCompleteListener(new OnCompleteListener<Void>() {
                        @Override
                        public void onComplete(@NonNull Task<Void> task) {
                            if (task.isSuccessful()) {
                                Log.d("Display name: ", FirebaseAuth.getInstance().getCurrentUser().getDisplayName());
                            }
                        }
                    });
                }
                LoginFragment.displayName = "";
            }
        }
    };