如何在flutter中使用区块模式将小部件添加到ListView？

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart'; // 引入flutter_bloc库

class DataBloc extends Cubit<List<String>> { // 使用flutter_bloc库的Cubit类作为区块模式类
  DataBloc() : super([]); // 初始化空的数据列表

  void addItem(String item) {
    state.add(item);
    emit(List.from(state)); // 更新数据列表并通知UI更新
  }
}

class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Block Pattern ListView Example'),
      ),
      body: BlocProvider<DataBloc>( // 提供DataBloc实例
        create: (context) => DataBloc(),
        child: ListViewWidget(),
      ),
    );
  }
}

class ListViewWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final dataBloc = BlocProvider.of<DataBloc>(context); // 获取DataBloc实例

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Block Pattern ListView Example',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}