我想通过身份验证在我的数据库中读取和写入，但我得到了两者的Permission denied。我想弄清楚为什么它不起作用。

我使用了默认规则，因为我需要身份验证，如文档中所述。

The default rules require Authentication. They allow full read and write > access to authenticated users of your app. They are useful if you want data open > to all users of your app but don't want it open to the world.

• Firebase 规则:

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

• 创建用户:

     auth.createUserWithEmailAndPassword(email, password)
          .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
              @Override
              public void onComplete(@NonNull Task<AuthResult> task) {
                  Log.d("USER_CREATE", "createUserWithEmail: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()) {
                      Toast.makeText(getApplicationContext(), "Authentication failed.",
                              Toast.LENGTH_SHORT).show();
                  } else {
                      startActivity(new Intent(SignupActivity.this, MainActivity.class));
                      finish();
                  }
  
                  // ...
              }
          });
  

• 登录用户:

  auth.signInWithEmailAndPassword(email, password)
          .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
              @Override
              public void onComplete(@NonNull Task<AuthResult> task) {
                  Log.d("COMPLETE", "signInWithEmail:onComplete:" + task.isSuccessful());
              }
          });
  

我得到了一个 AuthListener，它记录了我用户已登录。

• 授权监听器:

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

• Read test :(我在数据库中手动添加了一个节点)

  firebase.child("test").addValueEventListener(new ValueEventListener() {
  
      @Override
      public void onDataChange(DataSnapshot snapshot) {
          Log.d("result", snapshot.getValue()+"");
      }
  
      @Override
      public void onCancelled(FirebaseError error) {
          Log.d("The read failed: ", error.getMessage());
      }
  });
  

• 编写测试:我想要一个主节点users有两类用户:devs和employers.

  Firebase usersRef  = firebase.child("users").child("devs");
      FirebaseUser user = auth.getCurrentUser();
  
  Map<String, String> userMap = new HashMap<String, String>();
  userMap.put("name", "blabla");
  userMap.put("city", "Brussels");
  
  Map<String, Map<String, String>> users = new HashMap<String, Map<String, String>>();
  users.put(user.getUid().toString(), userMap);
  usersRef.setValue(users);
  

• 日志:

  D/AUTH LISTENER: onAuthStateChanged:signed_in:wnomkwiOWOb4wNNLSsrWeT5xxUq1
  D/USER_CREATE: createUserWithEmail:onComplete:true
  I/AppCompatViewInflater: app:theme is now deprecated. Please move to using android:theme instead.
  D/ACTION BAR?: android.support.v7.app.ToolbarActionBar@36c3cd2a
  W/SyncTree: Listen at /test failed: FirebaseError: Permission denied
  D/The read failed:: Permission denied
  D/FirebaseAuth: Notifying listeners about user ( wnomkwiOWOb4wNNLSsrWeT5xxUq1 ).
  D/FirebaseAuth: Notifying listeners about user ( wnomkwiOWOb4wNNLSsrWeT5xxUq1 ).
  D/FirebaseApp: Notifying auth state listeners.
  D/FirebaseApp: Notified 0 auth state listeners.
  D/AUTH LISTENER: onAuthStateChanged:signed_in:wnomkwiOWOb4wNNLSsrWeT5xxUq1
  D/FirebaseApp: Notifying auth state listeners.
  D/FirebaseApp: Notified 0 auth state listeners.
  D/AUTH LISTENER: onAuthStateChanged:signed_in:wnomkwiOWOb4wNNLSsrWeT5xxUq1
  D/COMPLETE: signInWithEmail:onComplete:true
  

我在公开许可下进行了这 2 项测试(写入:true，读取:true)并且它正在运行，所以我的身份验证一定有问题。我可能误解/遗漏了一些东西，但并没有真正看到到底是什么。如果有人愿意启发我，那就太好了!

最佳答案

您将旧的 Firebase SDK 与新的 Firebase SDK 混合使用。从您的 build.gradle 中删除 firebase-android-sdk 2.5.2 并更新您的导入以使用新的 DatabaseReference 类而不是 Firebase 类。

关于android - 使用身份验证拒绝 Firebase 权限(读取和写入)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/38199100/