在调试时按下Dart DevTools中的调试按钮之前，我无法在Flutter应用程序中按下按钮

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Button Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatelessWidget {
  void onPressedButton() {
    // 在这里处理按钮按下事件的逻辑
    print('Button pressed!');
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Button Demo'),
      ),
      body: Center(
        child: ElevatedButton(
          onPressed: onPressedButton,
          child: Text('Press Me'),
        ),
      ),
    );
  }
}