如何通过Flutter代码打开Web浏览器（URL）？

TL; DR

现在已实现为插件

const url = "https://flutter.io";if (await canLaunch(url))  launch(url);else   // can't launch url, there is some error

完整示例：

import 'package:flutter/material.dart';import 'package:url_launcher/url_launcher.dart';void main() {  runApp(new Scaffold(    body: new Center(      child: new RaisedButton(        onPressed: _launchURL,        child: new Text('Show Flutter homepage'),      ),    ),  ));}_launchURL() async {  const url = 'https://flutter.io';  if (await canLaunch(url)) {    await launch(url);  } else {    throw 'Could not launch $url';  }}

在pubspec.yaml中

dependencies:  url_launcher: ^5.4.2

特殊的角色：

如果该

url

Uri.enpreFull(urlString)

Uri.enpreComponent(urlString)