无法通过Facebook进行FirebaseAuth

Question

我正在使用Login Facebook开发应用程序，我需要在Firebase身份验证中注册用户。我该怎么办？

我尝试了很多事情，但没有成功；我可以使用Facebook登录，但是无法在Firebase控制台中注册用户，我也不知道为什么。甚至Firebase应用程序都检测到了用户，但未在Authentication类中注册该用户。

主要活动.java

public class MainActivity extends AppCompatActivity {

    private LoginButton loginButton;
    private CallbackManager callbackManager;
    private FirebaseAuth firebaseAuth;
    private FirebaseAuth.AuthStateListener firebaseAuthListener;
    public static final String TAG = "TODAY";
    private ProgressBar progressBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        callbackManager = CallbackManager.Factory.create();
        firebaseAuth = FirebaseAuth.getInstance();

        progressBar = (ProgressBar) findViewById(R.id.progressBar);
        loginButton = (LoginButton) findViewById(R.id.loginbutton);

        loginButton.setReadPermissions("email", "public_profile");

        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                Log.d(TAG, "facebook:onSuccess:" + loginResult);
                exchangeFacebookAccessToken (loginResult.getAccessToken());
            }

            @Override
            public void onCancel() {

            }

            @Override
            public void onError(FacebookException error) {

            }
        });

        firebaseAuthListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                FirebaseUser user = firebaseAuth.getCurrentUser();
                if (user != null) {
                    goMainScreen();
                } else {
                    Log.d("TODAY", "NO LOGIN");
                }
            }
        };
    }

    private void exchangeFacebookAccessToken(AccessToken accessToken) {

        loginButton.setVisibility(View.GONE);
        progressBar.setVisibility(View.VISIBLE);

        AuthCredential credential = FacebookAuthProvider.getCredential(accessToken.getToken());
        firebaseAuth.signInWithCredential(credential).addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {

            @Override
            public void onComplete(@NonNull Task<AuthResult> task) {
                Log.d("TODAY", "signInWithCredential:onComplete:" + task.isSuccessful());
                if (!task.isSuccessful()) {
                    Log.d("TODAY", "fallo:" + task.isSuccessful());
                } else {
                    // If sign in fails, display a message to the user.
                    Log.w(TAG, "signInWithEmail:failure", task.getException());
                    Toast.makeText(MainActivity.this, "Authentication failed.",
                            Toast.LENGTH_SHORT).show();
                }
                progressBar.setVisibility(View.GONE);
                loginButton.setVisibility(View.VISIBLE);
            }
        });
    }

    private void goMainScreen() {
        Intent intent = new Intent(this, inicio_persona.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);
    }

    @Override
    protected void onStart() {
        super.onStart();
        FirebaseUser currentUser = firebaseAuth.getCurrentUser();
        firebaseAuth.addAuthStateListener(firebaseAuthListener);
    }

    @Override
    protected void onStop() {
        super.onStop();
        firebaseAuth.removeAuthStateListener(firebaseAuthListener);
    }
}

inicio_persona.java

public class inicio_persona extends AppCompatActivity {

    private ImageView photoImageView;
    private TextView nameTextView;
    private TextView emailTextView;
    private TextView idTextView;

    private ProfileTracker profileTracker;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.persona_inicio);

        photoImageView = (ImageView) findViewById(R.id.photoImageView);
        nameTextView = (TextView) findViewById(R.id.nameTextView);
        emailTextView = (TextView) findViewById(R.id.emailTextView);
        idTextView = (TextView) findViewById(R.id.uidTextView);

        FirebaseUser user = FirebaseAuth.getInstance().getCurrentUser();

        profileTracker = new ProfileTracker() {
            @Override
            protected void onCurrentProfileChanged(Profile oldProfile, Profile currentProfile) {
                if (currentProfile != null) {
                    displayProfileInfo(currentProfile);
                }
            }
        };

        if (AccessToken.getCurrentAccessToken() == null) {
            goLoginScreen();
        } else {
            requestEmail(AccessToken.getCurrentAccessToken());

            Profile profile = Profile.getCurrentProfile();
            if (profile != null) {
                displayProfileInfo(profile);
            } else {
                Profile.fetchProfileForCurrentAccessToken();
            }
        }
    }

    private void requestEmail(AccessToken currentAccessToken) {
        GraphRequest request = GraphRequest.newMeRequest(currentAccessToken, new GraphRequest.GraphJSONObjectCallback() {
            @Override
            public void onCompleted(JSONObject object, GraphResponse response) {
                if (response.getError() != null) {
                    Toast.makeText(getApplicationContext(), response.getError().getErrorMessage(), Toast.LENGTH_LONG).show();
                    return;
                }
                try {
                    String email = object.getString("email");
                    setEmail(email);
                } catch (JSONException e) {
                    Toast.makeText(getApplicationContext(), e.getMessage(), Toast.LENGTH_LONG).show();
                }
            }
        });
        Bundle parameters = new Bundle();
        parameters.putString("fields", "id, first_name, last_name, email, gender, birthday, location");
        request.setParameters(parameters);
        request.executeAsync();
    }

    private void setEmail(String email) {
        emailTextView.setText(email);
    }

    private void goLoginScreen() {
        Intent intent = new Intent(this, MainActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_NEW_TASK);
        startActivity(intent);
    }

    public void logout(View view) {
        FirebaseAuth.getInstance().signOut();
        LoginManager.getInstance().logOut();
        goLoginScreen();
    }

    private void displayProfileInfo(Profile profile) {
        String id = profile.getId();
        String name = profile.getName();
        String photoUrl = profile.getProfilePictureUri(100, 100).toString();

        nameTextView.setText(name);
        idTextView.setText(id);

        Glide.with(getApplicationContext())
                .load(photoUrl)
                .into(photoImageView);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        profileTracker.stopTracking();
    }
}

• 如果我将“ goMainScreen”放到完整的结果上，它将起作用。