如何在Flutter中实现两个ListView在同一屏幕下的数据管理

import 'package:flutter/material.dart';

class MyWidget extends StatefulWidget {
  @override
  _MyWidgetState createState() => _MyWidgetState();
}

class _MyWidgetState extends State<MyWidget> {
  List<String> list1 = ['Item 1', 'Item 2', 'Item 3']; // 第一个ListView的数据
  List<String> list2 = ['Item A', 'Item B', 'Item C']; // 第二个ListView的数据

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: NestedScrollView(
        headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
          return <Widget>[
            SliverAppBar(
              title: Text('Two ListViews'),
              floating: true,
              pinned: true,
              snap: true,
              expandedHeight: 200,
              flexibleSpace: FlexibleSpaceBar(
                background: Image.network(
                  'https://example.com/image.jpg',
                  fit: BoxFit.cover,
                ),
              ),
            ),
          ];
        },
        body: Column(
          children: [
            Expanded(
              child: ListView.builder(
                itemCount: list1.length,
                itemBuilder: (BuildContext context, int index) {
                  return ListTile(
                    title: Text(list1[index]),
                  );
                },
              ),
            ),
            Expanded(
              child: ListView.builder(
                itemCount: list2.length,
                itemBuilder: (BuildContext context, int index) {
                  return ListTile(
                    title: Text(list2[index]),
                  );
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: MyWidget(),
  ));
}