如何根据Flutter中的孩子改变容器的高度？

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('Dynamic Container Height')),
        body: DynamicHeightContainer(),
      ),
    );
  }
}

class DynamicHeightContainer extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return LayoutBuilder(
      builder: (BuildContext context, BoxConstraints constraints) {
        // 这里可以根据constraints.maxHeight来决定容器的高度
        // 例如，我们可以将容器的高度设置为子组件高度的两倍
        final double containerHeight = constraints.maxHeight * 2;

        return Container(
          height: containerHeight,
          color: Colors.blue,
          child: Center(
            child: Text(
              'This is a child widget',
              style: TextStyle(color: Colors.white),
            ),
          ),
        );
      },
    );
  }
}