Google sign in Firebase auth, show “choose account”

Question

Hello I'm using firebase and google sign in. Everything works fine, but I don't know how to show "choose account" dialog. It doesn't appear when user isn't in firebase auth users and when it is. I would like to show this dialog. This is how I create auth (it is in fragment)

    gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getActivity().getResources().getString(R.string.key))
            .requestEmail()
            .build();

    mGoogleApiClient = new GoogleApiClient.Builder(getActivity())
            .enableAutoManage(((AppCompatActivity)getActivity()), this)
            .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
            .build();
  // and start activity

  Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
    startActivityForResult(signInIntent, RC_SIGN_IN);

Answer 1

That's because you didn't sign out your google account (not Firebase). Try to sign out your google account:

signOutButton.setOnClickListener(new View.OnClickListener() {           
    @Override
    public void onClick(View view) {
        firebaseAuth.signOut();
        signInClient.signOut();        //here

        nameTextView.setText("Google Account Name");

        Toast.makeText(view.getContext(), "Sign out successfully", Toast.LENGTH_SHORT).show();
    }
});

Answer 2

当设备中设置了不同的帐户时，此对话框会自动出现。