FB Login

fbLoginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {

                GraphRequest request = GraphRequest.newMeRequest(
                        loginResult.getAccessToken(),
                        (object, response) -> {
                            navigationController.navigateToRegister(BeforeHomeActivity.this,response.getJSONObject());
                            finish();
                        });

                FirebaseCrash.log("Success Facebook");

                Bundle parameters = new Bundle();
                parameters.putString("fields", "id,name,email,gender, birthday");
                request.setParameters(parameters);
                request.executeAsync();
            }

            @Override
            public void onCancel() {

            }

            @Override
            public void onError(FacebookException error) {
                FirebaseCrash.log(error.toString());
            }
        });

        fbLoginButton.performClick();