我正在尝试在我的Android应用程序中实现Facebook登录按钮,这是我到目前为止所做的:
public class LoginFragment extends BaseFragment {
private View mView;
private CallbackManager mCallbackManager;
private LoginButton mFBLoginButton;
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
FacebookSdk.sdkInitialize(getActivity());
mCallbackManager = CallbackManager.Factory.create();
mView = inflater.inflate(R.layout.login, container, false);
mFBLoginButton = (LoginButton) mView.findViewById(R.id.login_facebook_button);
mFBLoginButton.setReadPermissions("public_profile", "user_friends","user_birthday","user_about_me","email");
mFBLoginButton.setFragment(this);
mFBLoginButton.registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
@Override
public void onSuccess(LoginResult loginResult) {
Log.d("LoginFragment", "UserId: " + loginResult.getAccessToken().getUserId());
}
@Override
public void onCancel() {
Log.d("LoginFragment", "Operation Canceled");
}
@Override
public void onError(FacebookException e) {
e.printStackTrace();
}
});
return mView;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
getBaseActivity().displayToastMessage("Hey");
mCallbackManager.onActivityResult(requestCode, resultCode, data);
}
我还在应用程序清单中添加了Facebook活动和Id . 该应用程序运行正常,当我单击“登录”按钮时,它会将我带到Facebook对话框 . 这里的问题是没有任何回调方法被执行,即onSuccess(),onCancel()和onError() . 此外,onActivityResult()也不会被执行 . 请告诉我,如果我错过了什么
2 回答
经过长时间的检查,我发现我为保持片段的活动设置了noHistory为true . 一旦身份验证成功导致onActivityResult()未被调用,这就无法再次返回活动 .
我也有这个问题,但是通过在父活动OnActivityResult函数中添加方法来解决片段方法 .