如何在Flutter中对列表使用多个参数

class ListItem {
  final String title;
  final String subtitle;

  ListItem({required this.title, required this.subtitle});
}

List<ListItem> items = [
  ListItem(title: '标题1', subtitle: '副标题1'),
  ListItem(title: '标题2', subtitle: '副标题2'),
  // 更多项...
];

ListView.builder(
  itemCount: items.length,
  itemBuilder: (context, index) {
    return ListTile(
      title: Text(items[index].title),
      subtitle: Text(items[index].subtitle),
    );
  },
);

List<Tuple2<String, String>> items = [
  Tuple2('标题1', '副标题1'),
  Tuple2('标题2', '副标题2'),
  // 更多项...
];

ListView.builder(
  itemCount: items.length,
  itemBuilder: (context, index) {
    return ListTile(
      title: Text(items[index].item1),
      subtitle: Text(items[index].item2),
    );
  },
);