如何在flutter中对多个widget使用相同的键？

class MyListItem extends StatefulWidget {
  final String title;

  MyListItem({required this.title});

  @override
  _MyListItemState createState() => _MyListItemState();
}

class _MyListItemState extends State<MyListItem> {
  bool _isChecked = false;

  @override
  Widget build(BuildContext context) {
    return ListTile(
      key: ValueKey(widget.title), // 使用ValueKey基于title生成键
      title: Text(widget.title),
      trailing: Checkbox(
        value: _isChecked,
        onChanged: (value) {
          setState(() {
            _isChecked = value!;
          });
        },
      ),
    );
  }
}

class MyApp extends StatelessWidget {
  final List<String> items = ['Item 1', 'Item 2', 'Item 3'];

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Key Example')),
        body: ListView.builder(
          itemCount: items.length,
          itemBuilder: (context, index) {
            return MyListItem(title: items[index]);
          },
        ),
      ),
    );
  }
}