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// 导入需要使用的包，同时在pubspec.yaml中添加依赖（dependencies），然后执行flutter pub get
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// 类似于Java中的import语句，python中的import语句（pip install package_name）
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import 'package:flutter/material.dart';
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import 'package:flutter_svg/flutter_svg.dart';
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import 'package:font_awesome_flutter/font_awesome_flutter.dart';
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import 'package:package_info_plus/package_info_plus.dart';
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import 'package:url_launcher/url_launcher.dart';
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import 'package:about/about.dart';
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// 关于界面
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class AboutScreen extends StatelessWidget {
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const AboutScreen({Key? key}) : super(key: key);
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// 每个界面都需要实现build方法，返回一个Widget
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@override
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Widget build(BuildContext context) {
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return FutureBuilder(
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future: PackageInfo.fromPlatform(),
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builder: (BuildContext context, AsyncSnapshot<dynamic> snapshot) {
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if (snapshot.hasData) {
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final packageInfo = snapshot.data as PackageInfo;
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String version = packageInfo.version;
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String buildNumber = packageInfo.buildNumber;
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return AboutPage(
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key: const Key("aboutPage"),
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// 页面的标签
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title: Text("关于"),
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// 控制显示图标
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/* 所有要使用的资源需要在pubspec.yaml文件中的flutter节点下的assets节点声明，否则无法访问资源 */
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// FIXME: 此处APP图标显示异常
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applicationIcon: SvgPicture.asset(
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"icon.svg",
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semanticsLabel: "Time Manager",
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height: 100,
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),
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// 显示app版本号
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applicationVersion: "v$version+$buildNumber",
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// 显示app简介
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applicationDescription: Text(
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"一个（也许）能够管理你的时间的APP。",
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textAlign: TextAlign.justify,
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),
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// 应用程序的版权信息
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applicationLegalese:
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"Copyright © 2023 中国民航大学 计算机科学与技术学院 \n 计算机科学与技术专业 21034102班 \n 庞浩，葛兴海，蔡玉祥，邹兴云，卫俊钢 小组",
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/**
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* 列表的每一项，每一项都是一个ListTile
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*/
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children: <Widget>[
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// 帮助文档
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MarkdownPageListTile(
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// TODO: 完善README文件中的内容
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filename: 'README.md',
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title: Text("帮助文档"),
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icon: const Icon(FontAwesomeIcons.readme),
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),
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// 开发者信息
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// FIXME: md文件中的链接无法跳转
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MarkdownPageListTile(
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filename: 'CONTRIBUTORS.md',
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title: Text("开发者"),
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icon: const Icon(FontAwesomeIcons.userAstronaut),
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),
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// 知士荟博客链接
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ListTile(
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leading: const Icon(FontAwesomeIcons.blog),
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title: Text("知士荟博客"),
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onTap: () {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text("请横屏查看"),
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duration: Duration(seconds: 3)),
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);
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launchUrl(Uri.parse(
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"https://www.learnerhub.net/#/users/12147/docs"));
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}),
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// 头歌源代码链接
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ListTile(
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leading: const Icon(FontAwesomeIcons.code),
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title: Text("头歌源代码"),
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onTap: () => launchUrl(Uri.parse(
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"https://code.educoder.net/mbhvfy6mx/timemanager")),
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),
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],
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);
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} else {
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return const Center(
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child: CircularProgressIndicator(),
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);
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}
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},
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);
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}
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}
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