如何在Flutter中创建动态ListView？

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:equatable/equatable.dart';

// 步骤2：创建数据模型
class ListItem extends Equatable {
  final String title;

  ListItem({required this.title});

  @override
  List<Object?> get props => [title];
}

// 步骤3：创建Bloc类
class ListViewBloc extends Bloc<int, List<ListItem>> {
  ListViewBloc() : super([]);

  @override
  Stream<List<ListItem>> mapEventToState(int event) async* {
    List<ListItem> items = [];

    // 根据事件处理逻辑，这里只是简单示例
    for (int i = 0; i < event; i++) {
      items.add(ListItem(title: 'Item $i'));
    }

    yield items;
  }
}

// 步骤4：创建ListView
class ListViewPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Dynamic ListView'),
      ),
      body: BlocProvider(
        create: (context) => ListViewBloc(),
        child: BlocBuilder<ListViewBloc, List<ListItem>>(
          builder: (context, state) {
            return ListView.builder(
              itemCount: state.length,
              itemBuilder: (context, index) {
                return ListTile(
                  title: Text(state[index].title),
                );
              },
            );
          },
        ),
      ),
    );
  }
}

// 步骤5：连接Bloc和ListView
void main() {
  runApp(MaterialApp(
    home: ListViewPage(),
  ));
}