android - 登录后再次出现 Facebook 登录对话框

Question

我根据他们的文档实现了android的facebook登录

问题是，在用户输入其凭据(1 个对话框)进行登录并确认应用程序权限(2 个对话框)后，Facebook 连接只是返回到(1 个对话框)，再次请求凭据。为什么会这样？

在 facebook 用户中，我可以在应用列表中看到该应用

这是我的代码:

CallbackManager callbackManager = CallbackManager.Factory.create();
    LoginButton loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setReadPermissions("public_profile","user_friends");
    // Callback registration
    loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            // App code
            Log.i(Utils.TAG,"succesfull login to facebook");

            // App code
            GraphRequest request = GraphRequest.newMeRequest(
                    loginResult.getAccessToken(),
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(JSONObject object, GraphResponse response) {
                            Log.i("LoginActivity", response.toString());

                            try {
                            }catch (Exception e)
                            {   Log.i(Utils.TAG, e.getMessage());
                            }
                        }
                    });
        }

        @Override
        public void onCancel() {
            // App code
            Log.i(Utils.TAG,"onCancel login to facebook");
        }

        @Override
        public void onError(FacebookException exception) {
            // App code
            Log.i(Utils.TAG,"onError login to facebook");
            Log.i(Utils.TAG,exception.getMessage());
        }
    });



    loginButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
    //        LoginManager.getInstance().logInWithReadPermissions((Activity)m_context, Arrays.asList("public_profile", "email", "user_birthday", "user_friends"));
            LoginManager.getInstance().logInWithReadPermissions((Activity)m_context, Arrays.asList("public_profile", "user_friends"));
        }
    });


}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    Log.i(Utils.TAG,"onActivityResult called");
    super.onActivityResult(requestCode, resultCode, data);
    callbackManager.onActivityResult(requestCode, resultCode, data);
}

我应该提一下，只有当我关闭对话框时，登录流程中才会调用任何回调

Answer 1

是的，这是因为您同时使用了登录按钮和登录管理器。您只能从中选择一个。因为它们具有相同的功能。我建议您从此处删除登录管理器代码。

 loginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
        //        LoginManager.getInstance().logInWithReadPermissions((Activity)m_context, Arrays.asList("public_profile", "email", "user_birthday", "user_friends"));
                LoginManager.getInstance().logInWithReadPermissions((Activity)m_context, Arrays.asList("public_profile", "user_friends"));
            }
        });

和

oginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            // App code
            Log.i(Utils.TAG,"succesfull login to facebook");

            // App code
            GraphRequest request = GraphRequest.newMeRequest(
                    loginResult.getAccessToken(),
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(JSONObject object, GraphResponse response) {
                            Log.i("LoginActivity", response.toString());

                            try {
                            }catch (Exception e)
                            {   Log.i(Utils.TAG, e.getMessage());
                            }
                        }
                    });
        }

        @Override
        public void onCancel() {
            // App code
            Log.i(Utils.TAG,"onCancel login to facebook");
        }

        @Override
        public void onError(FacebookException exception) {
            // App code
            Log.i(Utils.TAG,"onError login to facebook");
            Log.i(Utils.TAG,exception.getMessage());
        }
    });