Ошибка виджета Flutter Statefull с будущим компоновщиком, использующим mysql api

Question

Эй, ребята, мне нужно отредактировать страницу моей корзины, но мне нужно динамически обновлять и обновлять sh некоторые данные, поэтому я просто изменил свой виджет на статусный виджет, но он ничего не показывает. Кто-нибудь знает, в чем проблема? Также я могу видеть данные, когда я использую виджет Statelles. Я использую mysql API для получения данных.

 import 'package:flutter/material.dart';
import 'services.dart';
import 'package:http/http.dart' as http;
 import 'Employee.dart';
import 'DataTableDemo.dart';

class FavoritesPage extends StatefulWidget {
@override

 FavoritesPageState createState() => FavoritesPageState();



}
class FavoritesPageState extends State<FavoritesPage>{

  @override
 Widget build(BuildContext context) {
return new MaterialApp(
  theme: new ThemeData(
    primarySwatch: Colors.deepOrange,
  ),
  home: new Scaffold(
    appBar: new AppBar(title: const Text('MySQL Images Text')),
    body: new Center(
      //FutureBuilder is a widget that builds itself based on the latest snapshot
      // of interaction with a Future.
      child: new FutureBuilder<List<Employee>>(
        future: Services.getEmployees(),
        //we pass a BuildContext and an AsyncSnapshot object which is an
        //Immutable representation of the most recent interaction with
        //an asynchronous computation.
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            List<Employee> _employee = snapshot.data;
            return CustomListView(_employee);
          } else if (snapshot.hasError) {
            return Text('${snapshot.error}');
          }
          //return  a circular progress indicator.
          return new CircularProgressIndicator();
        },
      ),
    ),
  ),
);
}
}

class CustomListView extends StatefulWidget {

 List<Employee> _employee;
CustomListView(this._employee);

  CustomListViewState createState() => CustomListViewState();
  }

  class CustomListViewState extends State<CustomListView>{
 List<Employee> _employee;


 Widget build(context) {
  return ListView.builder(
  itemCount: _employee.length,
  itemBuilder: (context, int currentIndex) {
    return createViewItem(_employee[currentIndex], context);
  },
);
 }

 @override
void initState() {
_employee = [];
_getEmployees();
  }

  Widget createViewItem(Employee _employee, BuildContext context) {
    return new Card(
    child: new Column(
  children: <Widget>[
    new ListTile(
      leading: new Image.asset(_employee.path, fit: BoxFit.cover),
      title: new Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: <Widget>[
          Text(
            _employee.firstName,
            style: new TextStyle(
              fontSize: 19.0,
              fontWeight: FontWeight.bold,
            ),
          ),
          Row(
            children: <Widget>[
              FlatButton(
                child: Text('-', style: TextStyle(fontSize: 28.0)),
                onPressed: () {},
              ),
              Text(_employee.id),
              FlatButton(
                child: Text(
                  '+',
                  style: TextStyle(fontSize: 28.0),
                ),
                onPressed: () {},
              ),
            ],
          )
        ],
      ),
      subtitle: new Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.end,
          children: <Widget>[
            IconButton(
              onPressed: () {
                _deleteEmployee(_employee);
              },
              icon: Icon(Icons.delete),
            ),
            new Text('\$' + _employee.price,
                style: new TextStyle(
                    fontSize: 15.0, fontWeight: FontWeight.normal)),
          ]),

      //trailing: ,

      onTap: () {},
    )
  ],
));
   }
 }

  _deleteEmployee(Employee employee) {
  Services.deleteEmployee(employee.id).then((result) {
   if ('success' == result) {
    _getEmployees(); // Refresh after delete...
  }
 });
 }

_getEmployees() {
  Services.getEmployees().then((employees) {
  print("Length ${employees.length}");
 });
}