How to get user profile information from Facebook API Android

Question

I\'m trying to get user profile information Facebook. Begins loading, I click to confirm permission to send my profile, again, continue loading but eventually get empty fiel

Answer 1

//register callback object for facebook result
    LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback() {
        @Override
        public void onSuccess(LoginResult loginResult) {

            //By Profile Class
            Profile profile = Profile.getCurrentProfile();
            if (profile != null) {
                facebook_id=profile.getId();
                f_name=profile.getFirstName();
                m_name=profile.getMiddleName();
                l_name=profile.getLastName();
                full_name=profile.getName();
                profile_image=profile.getProfilePictureUri(400, 400).toString();
            }
            //Toast.makeText(FacebookLogin.this,"Wait...",Toast.LENGTH_SHORT).show();
            GraphRequest request = GraphRequest.newMeRequest(AccessToken.getCurrentAccessToken(),
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(JSONObject object, GraphResponse response) {
                            try {
                                email_id=object.getString("email");
                                gender=object.getString("gender");
                                String profile_name=object.getString("name");
                                long fb_id=object.getLong("id"); //use this for logout

                            } catch (JSONException e) {
                                // TODO Auto-generated catch block
                                //  e.printStackTrace();
                            }

                        }

                    });

            request.executeAsync();
        }

        @Override
        public void onCancel() {
            Toast.makeText(FacebookLogin.this,getResources().getString(R.string.login_canceled_facebooklogin),Toast.LENGTH_SHORT).show();
            progress.dismiss();
        }

        @Override
        public void onError(FacebookException error) {
            Toast.makeText(FacebookLogin.this,getResources().getString(R.string.login_failed_facebooklogin),Toast.LENGTH_SHORT).show();
            progress.dismiss();
        }
    });