断开与Firebase的Google帐户的连接

Question

如何断开应用程序的连接，以便应用程序再次询问？”“您要使用哪个地址？

我尝试过：

注销后按登录按钮时，应用程序将直接在上一个会话中启动。我要这问该帐户使用。

第二活动：

(...)

        logout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                signOut();
            }
        });
    }
    public void signOut(){
        FirebaseAuth.getInstance().signOut();

        Intent i = new Intent(this, LoginActivity.class);
        startActivity(i);
    }
}

第一个活动：

   (...)

    mAuth = FirebaseAuth.getInstance();
    // Configure Google Sign In
    GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
            .requestIdToken(getString(R.string.default_web_client_id))
            .requestEmail()
            .build();

    mGoogleSignInClient = GoogleSignIn.getClient(this, gso);



    signInButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            signIn();
        }
    });
}
    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                // ...
                Log.e("*****e", e.getMessage(), e);
                Toast.makeText(LoginActivity.this, "Error", Toast.LENGTH_SHORT).show();
            }
        }
}
@Override
public void onStart() {
    super.onStart();
    // Check if user is signed in (non-null) and update UI accordingly.
    FirebaseUser currentUser = mAuth.getCurrentUser();
}
private void firebaseAuthWithGoogle(GoogleSignInAccount account) {

    AuthCredential credential = GoogleAuthProvider.getCredential(account.getIdToken(), null);
    mAuth.signInWithCredential(credential)
            .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful()) {
                        // Sign in success, update UI with the signed-in user's information
                        FirebaseUser user = mAuth.getCurrentUser();
                        Intent intent = new Intent(LoginActivity.this, Profile.class);
                        startActivity(intent);
                        finish();

                    } else {
                        // If sign in fails, display a message to the user.
                        Toast.makeText(LoginActivity.this, "Error1", Toast.LENGTH_SHORT).show();
                    }

                    // ...
                }
            });
}

资源：https://firebase.google.com/docs/auth/android/google-signin