Flutter执行方法长时间按下按钮

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('Long Press Button'),
        ),
        body: Center(
          child: GestureDetector(
            onLongPress: () {
              // 执行长时间按下按钮的方法
              print('Long press button is pressed!');
            },
            child: Container(
              padding: EdgeInsets.all(10),
              decoration: BoxDecoration(
                color: Colors.blue,
                borderRadius: BorderRadius.circular(10),
              ),
              child: Text(
                'Long Press Me',
                style: TextStyle(
                  color: Colors.white,
                  fontSize: 20,
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}