如何在Flutter中过滤和更新ListViewBuilder？

import 'package:flutter/material.dart';

class MyListView extends StatefulWidget {
  @override
  _MyListViewState createState() => _MyListViewState();
}

class _MyListViewState extends State<MyListView> {
  List<String> items = [
    'Item 1',
    'Item 2',
    'Item 3',
    'Item 4',
    'Item 5',
  ];

  String filter = '';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Filtered ListView'),
      ),
      body: Column(
        children: [
          TextField(
            onChanged: (value) {
              setState(() {
                filter = value;
              });
            },
            decoration: InputDecoration(
              labelText: 'Filter',
            ),
          ),
          Expanded(
            child: ListView.builder(
              itemCount: items.length,
              itemBuilder: (context, index) {
                if (items[index].contains(filter)) {
                  return ListTile(
                    title: Text(items[index]),
                  );
                } else {
                  return Container(); // 返回一个空容器，不显示该项
                }
              },
            ),
          ),
        ],
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MyListView(),
  ));
}