Flutter如何在PageView上进行延迟加载？

dependencies:
  flutter_swiper: ^1.1.6

import 'package:flutter/material.dart';
import 'package:flutter_swiper/flutter_swiper.dart';

class MyPageView extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Delayed Loading PageView'),
      ),
      body: Container(
        child: Swiper(
          itemCount: 3, // 页面数量
          itemBuilder: (BuildContext context, int index) {
            return FutureBuilder(
              future: loadData(index), // 延迟加载的函数
              builder: (BuildContext context, AsyncSnapshot snapshot) {
                if (snapshot.connectionState == ConnectionState.waiting) {
                  return Center(
                    child: CircularProgressIndicator(),
                  );
                } else {
                  return YourPageWidget(snapshot.data); // 加载完成后的页面Widget
                }
              },
            );
          },
        ),
      ),
    );
  }

  Future<dynamic> loadData(int index) async {
    // 延迟加载的函数，根据index加载数据
    await Future.delayed(Duration(seconds: 2)); // 模拟延迟加载
    // 加载数据的逻辑...
    return data;
  }
}

class YourPageWidget extends StatelessWidget {
  final dynamic data;

  YourPageWidget(this.data);

  @override
  Widget build(BuildContext context) {
    // 构建页面Widget
    return Container(
      child: Text(data),
    );
  }
}