Flutter -当容器高度大于数字时如何显示按钮

import 'package:flutter/material.dart';

class MyWidget extends StatelessWidget {
  final double containerHeight = 200.0; // 容器的高度

  @override
  Widget build(BuildContext context) {
    return Container(
      height: containerHeight,
      child: Builder(
        builder: (BuildContext context) {
          if (containerHeight > 100.0) {
            return ElevatedButton(
              onPressed: () {
                // 按钮点击事件
              },
              child: Text('显示按钮'),
            );
          } else {
            return SizedBox(); // 不显示按钮
          }
        },
      ),
    );
  }
}