Flutter:如何在按下时调用Future函数

import 'dart:async';

Future<void> myFunction() async {
  // 执行异步操作的代码
}

void onPressed() async {
  await myFunction();
}

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 Future函数示例'),
        ),
        body: Center(
          child: GestureDetector(
            onTap: () {
              onPressed();
            },
            child: Text('按下按钮'),
          ),
        ),
      ),
    );
  }
}

Future<void> myFunction() async {
  // 执行异步操作的代码
  await Future.delayed(Duration(seconds: 2));
  print('异步操作完成');
}

void onPressed() async {
  await myFunction();
  print('函数调用完成');
}