Question

我尝试使用自定义界面登录Facebook，它在Activity类中运行良好。我也必须在Fragment做同样的事情。但回调没有执行。是不是可以在Fragment的OnActivityResult中添加CallbackResult？

Answer 1

您只需在Activity onActivityResult中添加此代码。

for (Fragment fragment : getSupportFragmentManager().getFragments()) {
            //System.out.println("@#@");
            fragment.onActivityResult(requestCode, resultCode, data);
        }

然后你的片段onActivityResult肯定会起作用。

   @Override
        public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {


            callbackManager.onActivityResult(requestCode, resultCode, data);
        }

Answer 2

是的，可以在片段中实现facebook登录，您唯一需要做的就是在您的主机活动中调用OnActivityResult，如下所示：

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Fragment fragment = getFragmentManager().findFragmentById(R.id.your_host_fragment_in_activity);
        fragment.onActivityResult(requestCode, resultCode, data);
    }

然后在你的片段中再次调用onActivityResult。

Answer 3

您只需要在片段内添加一行

fbLoginButton.setFragment(this);

您将在

中获得控件

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {}

Answer 4

这是我的代码片段：

class LoginFragment : Fragment() {

    private var _binding: FragmentLoginBinding? = null
    private val binding get() = _binding!!

    private lateinit var callBackManager: CallbackManager
    private val TAG = "LoginFragment"

    override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        _binding = FragmentLoginBinding.inflate(inflater, container, false)
        callBackManager = CallbackManager.Factory.create()
        binding.loginButton.setPermissions(listOf("email, public_profile"))
        binding.loginButton.setFragment(this)
        binding.loginButton.registerCallback(callBackManager,
            object : FacebookCallback<LoginResult?> {
                override fun onSuccess(loginResult: LoginResult?) {
                    Log.d(TAG, "onSuccess: ${loginResult?.accessToken?.userId}")
                }

                override fun onCancel() {
                    // App code
                }

                override fun onError(exception: FacebookException) {
                    Log.d(TAG, "onError: $exception")
                }
            })

        return binding.root
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        callBackManager.onActivityResult(requestCode, resultCode, data)
        super.onActivityResult(requestCode, resultCode, data)
    }

    override fun onDestroyView() {
        super.onDestroyView()
        _binding = null
    }

}

Facebook登录android中的片段

4 个答案: