Flutter:列的子项的背景色

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('Flutter Demo'),
        ),
        body: Column(
          children: [
            Container(
              color: Colors.red, // 设置背景色为红色
              child: Text('Item 1'),
            ),
            Container(
              color: Colors.blue, // 设置背景色为蓝色
              child: Text('Item 2'),
            ),
            Container(
              color: Colors.green, // 设置背景色为绿色
              child: Text('Item 3'),
            ),
          ],
        ),
      ),
    );
  }
}