Android应用中未调用Facebook登录回调

Question

我正在尝试用Facebook和Twitter登录创建一个应用程序.我希望每个登录按钮都在其自己的片段中,完全独立于使用这些按钮的任何活动.所以我试图将onClick自定义按钮的处理程序放在片段本身中.

当我点击它时,它启动了facebook登录活动,但是当我在facebook登录活动中点击OK时,facebook活动关闭但从onActivityResult未被调用.这是我的代码片段.请告诉我哪里出错了

public class FragmentLoginButtonFacebook extends Fragment {

    private static final String LOG_TAG = FragmentLoginButtonFacebook.class.getSimpleName();;
    CallbackManager callbackManager;

    public FragmentLoginButtonFacebook() {
         // Required empty public constructor
    }

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

        FacebookSdk.sdkInitialize(getActivity().getApplicationContext());
        callbackManager = CallbackManager.Factory.create();
        LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                Toast.makeText(getActivity(), "success", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onCancel() {
                Toast.makeText(getActivity(), "cancel", Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onError(FacebookException exception) {
                Toast.makeText(getActivity(), "error", Toast.LENGTH_SHORT).show();
            }
        });
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view =  inflater.inflate(R.layout.fragment_login_facebook, container, false);

        Button button = (Button) view.findViewById(R.id.facebookLoginButton);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LoginManager.getInstance().logInWithReadPermissions(getActivity(), Arrays.asList("public_profile", "user_friends"));
            }
        });

        return view;
    }

    @Override
    public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        callbackManager.onActivityResult(requestCode, resultCode, data);
    }

}

• 我没有在我的XML中使用LoginButton.我正在创建自己的Button.
• 我的LogCat没有错误.

我是android编程的新手.详细解释将有很大帮助.谢谢.

Answer 1

我不确定,但这条线可能是原因 -

LoginManager.getInstance().logInWithReadPermissions(getActivity(),Arrays.asList("public_profile", "user_friends"));

改为:

LoginManager.getInstance().logInWithReadPermissions(这个,

Arrays.asList("public_profile", "user_friends"));

LoginManager有两个方法--logInWithReadPermissions,一个采用Fragment另一个Activity:

public void logInWithReadPermissions(Fragment fragment, Collection<String> permissions) {
        this.validateReadPermissions(permissions);
        Request loginRequest = this.createLoginRequest(permissions);
        this.startLogin(new LoginManager.FragmentStartActivityDelegate(fragment), loginRequest);
    }

    public void logInWithReadPermissions(Activity activity, Collection<String> permissions) {
        this.validateReadPermissions(permissions);
        Request loginRequest = this.createLoginRequest(permissions);
        this.startLogin(new LoginManager.ActivityStartActivityDelegate(activity), loginRequest);
    }

最后你可以看到一个调用Fragments startActivityForResult和其他活动 -

public void startActivityForResult(Intent intent, int requestCode) {
            this.fragment.startActivityForResult(intent, requestCode);
        }

public void startActivityForResult(Intent intent, int requestCode) {
            this.activity.startActivityForResult(intent, requestCode);
        }