如何在flutter中创建超链接图标？

import 'package:flutter/material.dart';
import 'package:url_launcher/url_launcher.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Hyperlink Icon'),
        ),
        body: Center(
          child: InkWell(
            child: Icon(Icons.link),
            onTap: () {
              _launchURL('https://www.example.com');
            },
          ),
        ),
      ),
    );
  }

  void _launchURL(String url) async {
    if (await canLaunch(url)) {
      await launch(url);
    } else {
      throw 'Could not launch $url';
    }
  }
}