如何在Flutter中更新SliverList的单个项目？

class MySliverList extends StatefulWidget {
  @override
  _MySliverListState createState() => _MySliverListState();
}

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

  @override
  Widget build(BuildContext context) {
    return CustomScrollView(
      slivers: [
        SliverList(
          delegate: SliverChildBuilderDelegate(
            (context, index) => ListTile(
              title: Text(items[index]),
              // 添加更新方法
              onTap: () {
                setState(() {
                  items[index] = 'Updated Item ${index + 1}';
                });
              },
            ),
            childCount: items.length,
          ),
        ),
      ],
    );
  }
}