firebase autenticationがAndroidアプリでnullを返す

Question

firebaseデータベースに接続するはずのアプリを書いています。私が（getAuth（）メソッドを使用して）autenticationキーをチェックすると、常にnullが返されるという点を除いて、すべてうまく動作します。私は私のアプリでautenthicationのためのFacebookを使用し、私は私のデータベースにautenthicationをオンにしたかった：

{ 
    "rules": { 
     ".read": "auth != null", 
      ".write":"auth != null" 
    } 
} 

マイプロジェクト2クラス、1ユーザーがFacebookのアカウントを使用してデータベースにアカウントを作成することができますLoginActivity、ですがあります。

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_login); 
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 

    firebaseAutenthication = FirebaseAuth.getInstance(); 

    //Get current user ID 
    FirebaseUser mUser = firebaseAutenthication.getCurrentUser(); 
    if (mUser != null) { 
     // Club is signed in 
     Intent intent = new Intent(getApplicationContext(), MainActivity.class); 
     String uid = firebaseAutenthication.getCurrentUser().getUid(); 
     String image = firebaseAutenthication.getCurrentUser().getPhotoUrl().toString(); 
     intent.putExtra("user_id", uid); 
     if (image != null || !Objects.equals(image, "")) { 
      intent.putExtra("profile_picture", image); 
     } 
     startActivity(intent); 
     finish(); 
     Log.e(TAG, "onAuthStateChanged:signed_in:" + mUser.getUid()); 
    } 

    //Setup firebase autenthication listener 
    firebaseAutenthicatorListener = new FirebaseAuth.AuthStateListener() { 
     @Override 
     public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) { 
      FirebaseUser mUser = firebaseAuth.getCurrentUser(); 
      if (mUser != null) { 
       // Club is signed in 
       Log.e(TAG, "onAuthStateChanged:signed_in:" + mUser.getUid()); 
      } else { 
       // Club is signed out 
       Log.e(TAG, "onAuthStateChanged:signed_out"); 
      } 

     } 
    }; 

    //Initialize facebook SDK 
    FacebookSdk.sdkInitialize(getApplicationContext()); 
    if (BuildConfig.DEBUG) { 
     FacebookSdk.setIsDebugEnabled(true); 
     FacebookSdk.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS); 
    } 

    //Create callback manager for facebook login 
    //onSucces calls login method 
    //TODO: onCancel and OnError should display popup with information that login failed 
    callbackManagerFromFacebook = CallbackManager.Factory.create(); 
    LoginButton loginButton = (LoginButton) findViewById(R.id.button_facebook_login); 
    loginButton.setReadPermissions("email", "public_profile"); 
    loginButton.registerCallback(callbackManagerFromFacebook, new FacebookCallback<LoginResult>() { 
     @Override 
     public void onSuccess(LoginResult loginResult) { 
      Log.e(TAG, "facebook:onSuccess:" + loginResult); 
      signInWithFacebook(loginResult.getAccessToken()); 
     } 

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

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

@Override 
protected void onStart() { 
    super.onStart(); 
    firebaseAutenthication.addAuthStateListener(firebaseAutenthicatorListener); 
} 

@Override 
public void onStop() { 
    super.onStop(); 
    if (firebaseAutenthicatorListener != null) { 
     firebaseAutenthication.removeAuthStateListener(firebaseAutenthicatorListener); 
    } 
} 

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

private void signInWithFacebook(AccessToken token) { 
    Log.e(TAG, "signInWithFacebook:" + token); 

    showProgressDialog(); 


    credential = FacebookAuthProvider.getCredential(token.getToken()); 
    firebaseAutenthication.signInWithCredential(credential) 
      .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() { 
       @Override 
       public void onComplete(@NonNull Task<AuthResult> task) { 
        Log.e(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.e(TAG, "signInWithCredential", task.getException()); 
         Toast.makeText(LoginActivity.this, "Authentication failed.", 
           Toast.LENGTH_SHORT).show(); 
        } else { 
         String uid = task.getResult().getUser().getUid(); 
         String name = task.getResult().getUser().getDisplayName(); 
         String email = task.getResult().getUser().getEmail(); 
         Uri imageUri = task.getResult().getUser().getPhotoUrl(); 
         String image = ""; 
         if(imageUri != null) { 
          image = imageUri.toString(); 
         } 

         //Create a new User and Save it in Firebase database 
         User user = new User(uid, name, null, email, null, null, "About Me"); 
         firebaseUsers.child(uid).setValue(user); 

         //Start MainActivity and pass user data to it 
         Intent intent = new Intent(getApplicationContext(), MainActivity.class); 
         intent.putExtra("user_id", uid); 
         intent.putExtra("profile_picture", image); 
         startActivity(intent); 
         finish(); 
        } 

       } 
      }); 

そして第二1は、ユーザ情報が自分のFacebookのプロフィールを形成取得し、データベースにそれらを置くことになって、MainActivityです：まだ

void getValueFromFirebase() { 
    Log.e(TAG, "Started getValueFromFirebase()"); 



    firebase.child(userID).child("name").addValueEventListener(new ValueEventListener() { 
     @Override 
     public void onDataChange(DataSnapshot dataSnapshot) { 
      String data = dataSnapshot.toString(); 
      Toast.makeText(getApplicationContext(), data, Toast.LENGTH_LONG).show(); 
     } 

     @Override 
     public void onCancelled(FirebaseError firebaseError) { 
      Toast.makeText(getApplicationContext(), firebaseError.toString(), Toast.LENGTH_LONG).show(); 
     } 
    }); 



} 

void createFirebaseConnection() { 
    this.firebase = new Firebase(AppConstants.FIREBASE_URL_USERS); 
    this.firebaseAuthentication = FirebaseAuth.getInstance(); 
    this.firebaseUser = firebaseAuthentication.getCurrentUser(); 

    //Create listener for firebase autenthication 
    //Log if user is disconnected 
    this.firebaseAutenthicationStateListener = new FirebaseAuth.AuthStateListener() { 
     @Override 
     public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) { 
      FirebaseUser user = firebaseAuth.getCurrentUser(); 
      if (user != null) { 
       // User is signed in 
       Log.e(TAG, "onAuthStateChanged:" + user.getUid()); 
      } else { 
       // User is signed out 
       Log.d(TAG, "onAuthStateChanged: user is not signed in!"); 
      } 
     } 
    }; 
    firebaseAuthentication.addAuthStateListener(this.firebaseAutenthicationStateListener); 

    //Check if auth is done 
    //If not, autenthicate with Facebook Token 
    if(this.firebase.getAuth() == null) { 
     Log.e(TAG, "firebase.getAuth() == null, starting authWithFacebook()..."); 
     authWithFacebook(); 
    } 
} 

void authWithFacebook() { 
    Log.e(TAG, "authWithFacebook() started!"); 

    AccessToken accessToken = AccessToken.getCurrentAccessToken(); 
    AuthCredential credential = FacebookAuthProvider.getCredential(accessToken.getToken()); 
    Log.e(TAG, "Facebook Token: " + accessToken.getToken()); 

    Log.e(TAG, "Auth: " + firebase.getAuth()); 

} 

void readDataFromLoginActivity() { 
    //Get the uid for the currently logged in Club from intent data passed to this activity 
    this.userID = getIntent().getExtras().getString("user_id"); 
    //Get the imageUrl for the currently logged in Club from intent data passed to this activity 
    //Load image to ImageView 
    this.userImageUrl = getIntent().getExtras().getString("profile_picture"); 
} 

@Override 
public void onBackPressed() { 
    if (userProfile.moveState == 1) { 
     userProfile.slideBottom(); 
    } else { 
     super.onBackPressed(); 
    } 
} 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    Log.e(TAG, "onCreate() called..."); 
    setContentView(R.layout.activity_main); 
    lay = (RelativeLayout) findViewById(R.id.lay); 
    Display display = getWindowManager().getDefaultDisplay(); 
    Point size = new Point(); 
    display.getSize(size); 
    width = size.x; 
    height = size.y; 
    Log.e(TAG, "readDataFromLoginActivity() called..."); 
    readDataFromLoginActivity(); 


    Log.e(TAG, "createFirebaseConnection() called..."); 
    createFirebaseConnection(); 


} 

@Override 
protected void onStart() { 
    super.onStart(); 
    Log.e(TAG, "onStart() called..."); 
    addTopTabBar(); 
    addProfileFragment(); 
    addLeftSideBar(); 
    Log.e(TAG, "Binding UI Elements..."); 
    bindUIElements(); 

    getValueFromFirebase(); 

} 

、私が表示するトーストは常に "許可エラー"を表示します。これをどうすれば解決できますか？

Answer 1

同じアプリで、従来の2.x.x SDKと新しい10.x.x SDKの両方を使用しています。これは良い習慣ではなく、おそらく問題の原因です。依存関係からこの行を削除し、必要なコードを変更して新しいSDKの機能のみを使用します。

compile 'com.firebase:firebase-client-android:2.x.x' 

新しいSDKのパッケージ名は、com.google.firebaseで始まります。従来のSDKのものはcom.firebase.clientで始まります。

便利なヒントはUpgrade Guideです。