Question

我试图通过电子邮件和密码使用Firebase Auth服务。我想做的是：

登录用户
成功登录后，我想从Firebase数据库中获取数据。

获得日志[onAuthStateChanged:signed_in: "xyz"]。在那个日志之后每当我获得权限被拒绝并且也得到这个：

[W / DynamiteModule：本地模块描述符类 com.google.firebase.auth not found]。

我的数据库规则：

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

我的代码

private FirebaseAuth auth;
private FirebaseAuth.AuthStateListener mAuthListener;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    auth = FirebaseAuth.getInstance();
    btnLogIn.setOnClickListener(onClickBtnLogIn);

    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());

                final Firebase ref = new Firebase("https://firebaseapplink/Person");
                ref.addListenerForSingleValueEvent(new ValueEventListener() {
                    @Override
                    public void onDataChange(DataSnapshot dataSnapshot) {
                        Map<String, Object> userData = (Map<String, Object>) dataSnapshot.getValue();
                        Log.d("TAG", "User Data :" + userData);
                    }
                    @Override
                    public void onCancelled(FirebaseError firebaseError) {
                        Log.d("TAG", firebaseError.getMessage()); // Permission Denied

                    }
                });

            } else {
                Log.d("TAG", "onAuthStateChanged:signed_out");
            }
        }
    };
}



      View.OnClickListener onClickBtnLogIn = new View.OnClickListener()
{
    @Override
    public void onClick(View v) {
        final String Email = edtEmail.getText().toString().trim();
        final String Password = edtPwd.getText().toString().trim();

        auth.signInWithEmailAndPassword(Email, Password)
                .addOnCompleteListener(abc.this, new OnCompleteListener<AuthResult>()
                {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task)
                    {

                        if (task.isSuccessful())
                        {
                            Log.d("SignIn", "task");
                        }
                        if (!task.isSuccessful()) 
                        {
                            Log.d("SignIn", "task fail");
                        }
                    }
                });
    }
};

@Override
public void onStart() {
    super.onStart();
    auth.addAuthStateListener(mAuthListener);
}

Answer 1

您正在使用新的9.4.0 SDK中的旧版2.x SDK与FirebaseAuth混合数据库服务。它们不兼容。从构建依赖项中删除compile com.firebase:firebase-client-android:2.x.x，替换为编译com.google.firebase:firebase-database:9.4.0，并使code change需要使用FirebaseDatabase。

Answer 2

确保您在build.gradle文件中添加了依赖项。

compile 'com.google.firebase:firebase-auth:9.4.0'

失败：FirebaseError：每次都拒绝权限

2 个答案: