Firebase Facebook 和 Google 登录

Question

我使用 Firebase 在我的应用程序中集成了 Google 和 Facebook 登录。 我想在用户使用他的 Facebook 或 Google ID 成功登录后自动启动另一个活动，并且下次，当用户打开应用程序时，如果他没有退出，他应该自动重定向到主页。

1. 对于 Google，它运行良好，但对于 Facebook，登录按钮文本已更改为“已登录”，但未重定向到主页。
2. 我还想限制用户一次只能使用一种登录方法。 我的意思是，如果他从 Facebook 登录，他应该无法从 Google 登录，反之亦然。

有人可以帮忙吗？ 下面是我的代码：

import android.app.ProgressDialog;
import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.example.aamir.myapplication.R;
import com.facebook.AccessToken;
import com.facebook.CallbackManager;
import com.facebook.FacebookCallback;
import com.facebook.FacebookException;
import com.facebook.FacebookSdk;
import com.facebook.login.LoginManager;
import com.facebook.login.LoginResult;
import com.facebook.login.widget.LoginButton;
import com.google.android.gms.auth.api.Auth;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.auth.api.signin.GoogleSignInResult;
import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FacebookAuthProvider;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class homeActivity extends AppCompatActivity implements GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener {
    // [START declare_auth]
    private static FirebaseAuth mAuth;
    ProgressDialog mProgressDialog;
    private static final int RC_SIGN_IN = 9001;
    // [END declare_auth]
    private static final String TAG = homeActivity.class.getSimpleName();
    // [START declare_auth_listener]
    private FirebaseAuth.AuthStateListener mAuthListener;
    // [END declare_auth_listener]
    private GoogleApiClient mGoogleApiClient;
    private CallbackManager mCallbackManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext());
        setContentView(R.layout.activity_home);
        mProgressDialog = new ProgressDialog(homeActivity.this);
        mProgressDialog.setIndeterminate(true);
        mProgressDialog.setTitle("Logging in");
        mProgressDialog.setMessage("Please Wait");
        mProgressDialog.setIcon(android.R.drawable.ic_dialog_email);
        // [START initialize_auth]
        // Initialize Firebase Auth
        mAuth = FirebaseAuth.getInstance();
        // [END initialize_auth]
        // [START initialize_fblogin]
        // Initialize Facebook Login button
        mCallbackManager = CallbackManager.Factory.create();
        LoginButton loginButton = (LoginButton) findViewById(R.id.fb_btn);
        loginButton.setReadPermissions("email", "public_profile");
        // [START auth_state_listener]
        mAuthListener = new FirebaseAuth.AuthStateListener() {
            @Override
            public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) {
                FirebaseUser user = firebaseAuth.getCurrentUser();
                if (user != null) {
                    // User is signed in
                    Log.d(TAG, "onAuthStateChanged:signed_in:" + user.getUid());
                    Intent intent = new Intent(homeActivity.this, StaggeredViewActivity.class);
                    startActivity(intent);

                } else {
                    // User is signed out
                    Log.d(TAG, "onAuthStateChanged:signed_out");
                }
                // [START_EXCLUDE]

                // [END_EXCLUDE]
            }
        };
// [END auth_state_listener]
        // [START config_signin]
        // Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();
        // [END config_signin]

        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .enableAutoManage(homeActivity.this, this /* OnConnectionFailedListener */)
                .addApi(Auth.GOOGLE_SIGN_IN_API, gso)
                .build();

        //Google Button Handle
        findViewById(R.id.google).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent signInIntent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
                startActivityForResult(signInIntent, RC_SIGN_IN);
            }
        });



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

            }

            @Override
            public void onCancel() {
                Log.d(TAG, "facebook:onCancel");
                // [START_EXCLUDE]
                Toast.makeText(homeActivity.this, "Cancelled", Toast.LENGTH_SHORT).show();
                // [END_EXCLUDE]
            }

            @Override
            public void onError(FacebookException error) {
                Log.d(TAG, "facebook:onError", error);
                // [START_EXCLUDE]
                Toast.makeText(homeActivity.this, "Some Error Occured", Toast.LENGTH_SHORT).show();
                // [END_EXCLUDE]
            }
        });
        // [END initialize_fblogin]
    }

    // [START on_start_add_listener]
    @Override
    public void onStart() {
        super.onStart();
        mAuth.addAuthStateListener(mAuthListener);
    }
    // [END on_start_add_listener]

    // [START on_stop_remove_listener]
    @Override
    public void onStop() {
        super.onStop();
        if (mAuthListener != null) {
            mAuth.removeAuthStateListener(mAuthListener);
        }
    }
    // [END on_stop_remove_listener]


    // [START on_activity_result]
    @Override
    protected 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) {
            GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
            if (result.isSuccess()) {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = result.getSignInAccount();
                firebaseAuthWithGoogle(account);
            } else {
                // Google Sign In failed, update UI appropriately
                // [START_EXCLUDE]
                Toast.makeText(this, "Google Sign in Failed", Toast.LENGTH_SHORT).show();
                // [END_EXCLUDE]
            }



        }
        else{
            // Pass the activity result back to the Facebook SDK
            mCallbackManager.onActivityResult(requestCode, resultCode, data);
        }

        if(mGoogleApiClient!=null && mGoogleApiClient.isConnected()){
            Auth.GoogleSignInApi.signOut(mGoogleApiClient);
        }

    }

    // [END on_activity_result]
    // [START auth_with_google]
    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());
        // [START_EXCLUDE silent]
        mProgressDialog.show();
        // [END_EXCLUDE]

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        Log.d(TAG, "signInWithCredential:onComplete:" + task.isSuccessful());

                        // If sign in fails, display a message to the user. If sign in succeeds
                        // the auth state listener will be notified and logic to handle the
                        // signed in user can be handled in the listener.
                        if (!task.isSuccessful()) {
                            Log.w(TAG, "signInWithCredential", task.getException());
                            Toast.makeText(homeActivity.this, "Authentication failed.",
                                    Toast.LENGTH_SHORT).show();
                        }
                        // [START_EXCLUDE]
                        mProgressDialog.dismiss();
                        // [END_EXCLUDE]
                    }
                });
    }

    // [END auth_with_google]
    // [START auth_with_facebook]
    private void handleFacebookAccessToken(AccessToken token) {
        Log.d(TAG, "handleFacebookAccessToken:" + token);
        // [START_EXCLUDE silent]
        mProgressDialog.show();
        // [END_EXCLUDE]

        AuthCredential credential = FacebookAuthProvider.getCredential(token.getToken());
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        Log.d(TAG, "signInWithCredential:onComplete:" + task.isSuccessful());


                        // [START_EXCLUDE]
                        mProgressDialog.dismiss();
                        // [END_EXCLUDE]
                    }
                });
    }


    // [END auth_with_facebook]
    public static void signOut() {
        FirebaseAuth.getInstance().signOut();
        LoginManager.getInstance().logOut();
        //mAuth.signOut();
    }

    @Override
    public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {

    }

    @Override
    public void onConnected(@Nullable Bundle bundle) {

    }

    @Override
    public void onConnectionSuspended(int i) {

    }
}

Answer 1

我自己解决了这个问题，我所做的是禁用并重新启用 Firebase 控制台中的电子邮件/密码功能，一切顺利。

Answer 2

首次注册时将用户凭据保存在共享首选项中，然后在用户启动应用程序时检查它们。