Android Programming -- Retrieving User's Facebook Email and Name

Question

When asking the user to login into my app through the Facebook login, I want to retrieve their email and name in order for them to create a custom account for our application. However, after asking them to login through Facebook and authorizing our app for the user's name and email, the app does not transition to the registration fragment and input the information into the email and name fields.

In the LoginFragment, I have this section of code dedicated to retrieving the user's email and name.

    mFaceLogin = (LoginButton) v.findViewById(R.id.login_button);
    mFaceLogin.setReadPermissions(Arrays.asList("email", "public_profile"));
    mFaceLogin.setFragment(this);
    mFaceLogin.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            final AccessToken accessToken = loginResult.getAccessToken();
            GraphRequest request = GraphRequest.newMeRequest(accessToken, new GraphRequest.GraphJSONObjectCallback() {
                @Override
                public void onCompleted(JSONObject user, GraphResponse graphResponse) {
                    if (graphResponse.getError() == null) {
                        ((MyRegisterListener) getActivity()).myStartRegisterFacebook(user.optString("first_name"), user.optString("email"));
                    }
                }
            });
        }

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

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

The myStartRegisterFacebook method is suppose to make a call to the Activity to both switch to the RegisterFragment and send the name and email to the EditText fields displayed in the RegisterFragment's xml layout.

LoginActivity

@Override
public void myStartRegisterFacebook(String name, String email) {
    RegisterFragment registerFragment = new RegisterFragment();
    getSupportFragmentManager().beginTransaction().replace(R.id.lr_container,
            new RegisterFragment()).addToBackStack(null).commit();
    registerFragment.updateInformation(name, email);
}

RegisterFragment

    public void updateInformation(String name, String email) {
    mFname.setText(name);
    mEmail.setText(email);
}

Possible duplicate of [unable to get email and gender and dob in Facebook login android](http://stackoverflow.com/questions/32565805/unable-to-get-email-and-gender-and-dob-in-facebook-login-android) — Vipul Asri, Dec 04 '15 at 05:00

score 0 · Answer 1 · answered Dec 04 '15 at 04:53

try to replace this line:

if (graphResponse.getError() == null) {
    ((MyRegisterListener) getActivity()).myStartRegisterFacebook(user.optString("first_name"), user.optString("email"));
}

with this line:

if (graphResponse != null) {
    JSONObject obj = graphResponse.getJSONObject();

    try {
        ((MyRegisterListener) getActivity()).myStartRegisterFacebook(obj.getString("first_name"), obj.getString("email"));
    } catch (JSONException e) {
        Log.e("JSONError:", e.toString());
    }
}

score 0 · Answer 2 · answered Dec 04 '15 at 04:54

You can use GraphAPI to get email & name

GraphRequest.newMeRequest(
                        loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback() {
                            @Override
                            public void onCompleted(JSONObject me, GraphResponse response) {
                                if (response.getError() != null) {
                                    // handle error
                                } else {
                                    String email = me.optString("email");
                                    String id = me.optString("id");
                                    final String userName =me.optString("name");

                                }
                            }
                }).executeAsync();

Android Programming -- Retrieving User's Facebook Email and Name

2 Answers2