如何在Flutter中沿着ListView在同一屏幕上显示一个widget？

ListView.builder(
  itemCount: 1, // 子widget的数量
  itemBuilder: (BuildContext context, int index) {
    return YourWidget(); // 要显示的widget
  },
)

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('ListView Example'),
        ),
        body: ListView.builder(
          itemCount: 1,
          itemBuilder: (BuildContext context, int index) {
            return YourWidget();
          },
        ),
      ),
    );
  }
}

class YourWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Container(
      height: 200,
      color: Colors.blue,
      child: Center(
        child: Text(
          'Your Widget',
          style: TextStyle(
            color: Colors.white,
            fontSize: 24,
          ),
        ),
      ),
    );
  }
}