Facebook登录按钮有效，但未成功登录

Question

当我按下按钮后，我在我的应用程序中使用Facebook登录在我按“打开”后，它仍然正常运行继续，因为（UserName）该应用程序连接到Firebase时什么都没发生，我添加了两个Toast以检查是否登录进程是否失败，但是它们什么都没有出现，失败时应该出现的吐司或者正常工作时应该出现的其他吐司

这是我的活动代码：

public class GeneralSignActivity extends AppCompatActivity {
    private FirebaseAuth mAuth;
    SignInButton button;
    private final static int RC_SIGN_IN = 2;
    private final String TAG = "Logging";
    CallbackManager mCallbackManager;
    GoogleApiClient mGoogleApiClient;
    GoogleSignInOptions gso;
    private GoogleSignInClient mGoogleSignInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_general_sign);
        ButterKnife.bind(this);
        mAuth = FirebaseAuth.getInstance();
        button = findViewById(R.id.googleBtn);
        FacebookSdk.sdkInitialize(getApplicationContext());

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

        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .enableAutoManage(this, new GoogleApiClient.OnConnectionFailedListener() {
                    @Override
                    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
                        Toast.makeText(GeneralSignActivity.this, "حدث خطأ برجاء اعادة المحاولة", Toast.LENGTH_SHORT).show();
                    }
                })
                .addApi(Auth.GOOGLE_SIGN_IN_API)
                .build();
        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);

        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                signIn();
            }
        });

        mCallbackManager = CallbackManager.Factory.create();
        LoginButton loginButton = findViewById(R.id.facebookBtn);
        loginButton.setReadPermissions("email", "public_profile");
        loginButton.registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                Log.d(TAG, "facebook:onSuccess:" + loginResult);
                handleFacebookAccessToken(loginResult.getAccessToken());
                Toast.makeText(GeneralSignActivity.this, "نجح تسجيل الدخول", Toast.LENGTH_SHORT).show();

            }

            @Override
            public void onCancel() {
                Log.d(TAG, "facebook:onCancel");
                // ...
            }

            @Override
            public void onError(FacebookException error) {
                Log.d(TAG, "facebook:onError", error);
                // ...
            }
        });
    }

    private void handleFacebookAccessToken(AccessToken token) {
        Log.d(TAG, "handleFacebookAccessToken:" + token);

        AuthCredential credential = FacebookAuthProvider.getCredential(token.getToken());
        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
                            Log.d(TAG, "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            Intent i = new Intent(GeneralSignActivity.this, MainActivity.class);
                            startActivity(i);
                            Toast.makeText(GeneralSignActivity.this, "handle facebook access token.",
                                    Toast.LENGTH_SHORT).show();
                            //updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            Toast.makeText(GeneralSignActivity.this, "Authentication failed.",
                                    Toast.LENGTH_SHORT).show();
                           // updateUI(null);
                        }

                        // ...
                    }
                });
    }

    @OnClick(R.id.btnSignUp)
    void click(View view) {
        Intent i = new Intent(this, SignUpActivity.class);
        startActivity(i);
    }

    @OnClick(R.id.btnSignIn)
    void click2(View view) {
        Intent i = new Intent(this, SignInActivity.class);
        startActivity(i);
    }

    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);
                Toast.makeText(this, "نجح تسجيل الدخول",Toast.LENGTH_SHORT).show();
                startActivity(new Intent(GeneralSignActivity.this,MainActivity.class));
            } catch (ApiException e) {
                Toast.makeText(GeneralSignActivity.this, "حدث خطأ أثناء محاولة التسجيل برجاء اعادة المحاولة", Toast.LENGTH_SHORT).show();

            }
        }//TODO
        mCallbackManager.onActivityResult(requestCode, resultCode, data);

    }

    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();
                            //updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Toast.makeText(GeneralSignActivity.this, "Authentication Failed.", Toast.LENGTH_SHORT).show();
                            //updateUI(null);
                        }

                        // ...
                    }
                });
    }

    @Override
    public void onStart() {
        super.onStart();
        FirebaseUser currentUser = mAuth.getCurrentUser();
        if (currentUser != null) {
            startActivity(new Intent(GeneralSignActivity.this, MainActivity.class));
        }
    }

}