Flutter :如何设置滚动x轴条形图的固定宽度

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Scrollable Bar Chart',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: Scaffold(
        appBar: AppBar(
          title: Text('Scrollable Bar Chart'),
        ),
        body: ListView(
          scrollDirection: Axis.horizontal, // 设置滚动方向为水平方向
          children: [
            Container(
              width: 100, // 设置每个条形图的固定宽度
              height: 200, // 设置每个条形图的高度
              color: Colors.red,
            ),
            Container(
              width: 100,
              height: 150,
              color: Colors.green,
            ),
            Container(
              width: 100,
              height: 100,
              color: Colors.blue,
            ),
            Container(
              width: 100,
              height: 250,
              color: Colors.yellow,
            ),
          ],
        ),
      ),
    );
  }
}