Flutter通过provider使用Listview.builder

dependencies:
  flutter:
    sdk: flutter
  provider: ^4.3.2+2

class Item {
  final String title;
  final String description;

  Item(this.title, this.description);
}

class ItemProvider with ChangeNotifier {
  List<Item> _items = [
    Item("Item 1", "Description 1"),
    Item("Item 2", "Description 2"),
    Item("Item 3", "Description 3"),
  ];

  List<Item> get items => _items;

  void addItem(Item item) {
    _items.add(item);
    notifyListeners();
  }
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider(
      create: (context) => ItemProvider(),
      child: MaterialApp(
        home: Scaffold(
          appBar: AppBar(
            title: Text("Flutter Provider ListView.builder"),
          ),
          body: Consumer<ItemProvider>(
            builder: (context, itemProvider, _) {
              return ListView.builder(
                itemCount: itemProvider.items.length,
                itemBuilder: (context, index) {
                  return ListTile(
                    title: Text(itemProvider.items[index].title),
                    subtitle: Text(itemProvider.items[index].description),
                  );
                },
              );
            },
          ),
        ),
      ),
    );
  }
}