Android Facebook SDK 4.X , how to get Email address and Facebook Access Token to pass it to Web Service

Question

EDIT : My Question is how to get Email , UserId , Facebook Authentication with Facebook SDK 4.X , at this moment , with Ming Respond , i know how can i get Email , User Id

Answer 1

fbLoginBtn.registerCallback(callbackManager, new FacebookCallback() {
    @Override
    public void onSuccess(LoginResult loginResult) {
        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");
                        // send email and id to your web server
                    }
                }
            }).executeAsync();
    }

    @Override
    public void onCancel() {
        // App code
    }

    @Override
    public void onError(FacebookException exception) {
        // App code
    }
});