百度到的方法如下：
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<!-- iPad and iPad mini (with @2× display) iOS ≥ 8 -->
<link rel="apple-touch-icon-precomposed" sizes="180x180" href="img/touch/apple-touch-icon-180x180-precomposed.png">
<!-- iPad 3+ (with @2× display) iOS ≥ 7 -->
<link rel="apple-touch-icon-precomposed" sizes="152x152" href="img/touch/apple-touch-icon-152x152-precomposed.png">
<!-- iPad (with @2× display) iOS ≤ 6 -->
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="img/touch/apple-touch-icon-144x144-precomposed.png">
<!-- iPhone (with @2× and @3 display) iOS ≥ 7 -->
<link rel="apple-touch-icon-precomposed" sizes="120x120" href="img/touch/apple-touch-icon-120x120-precomposed.png">
<!-- iPhone (with @2× display) iOS ≤ 6 -->
<link rel="apple-touch-icon-precomposed" sizes="114x114" href="img/touch/apple-touch-icon-114x114-precomposed.png">
<!-- iPad mini and the first- and second-generation iPad (@1× display) on iOS ≥ 7 -->
<link rel="apple-touch-icon-precomposed" sizes="76x76" href="img/touch/apple-touch-icon-76x76-precomposed.png">
<!-- iPad mini and the first- and second-generation iPad (@1× display) on iOS ≤ 6 -->
<link rel="apple-touch-icon-precomposed" sizes="72x72" href="img/touch/apple-touch-icon-72x72-precomposed.png">
<!-- Android Stock Browser and non-Retina iPhone and iPod Touch -->
<link rel="apple-touch-icon-precomposed" href="img/touch/apple-touch-icon-57x57-precomposed.png">
<!-- Fallback for everything else -->
<link rel="shortcut icon" href="img/touch/apple-touch-icon.png">
<!-- IOS 主屏幕应用全屏 -->
<meta name="apple-mobile-web-app-capable" content="yes">
<!-- 安卓 主屏幕应用全屏 -->
<meta name="mobile-web-app-capable" content="yes">
<!-- IOS默認的時間、電池、供應商等信息 -->
<meta name="apple-mobile-web-app-status-bar-style" content="black" />
</head>
<body>
</body>
</html>但是这个是写在html文件中的，我的项目是用uniapp写的，如何在uniapp中实现呢？
于是看到项目结构中有个自动生成的index.html文件，于是试了试在里面写以上html中的内容，还是无用，发现运行在浏览器端的文件中并没有我添加的代码。
于是查阅uniapp官方文档发现可以自定义模板 https://uniapp.dcloud.io/collocation/manifest.html#h5-template
按照以上步骤：
1.新建模板文件template.html
2.写入内容
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
<meta name="apple-mobile-web-app-title" content="你的快捷方式名称">
<!-- 图标 .ico类型文件 -->
<link rel="apple-touch-icon" href="http://81.69.39.207:8011/favicon.ico" >
<!-- 图标路径 -->
<link rel="apple-touch-icon-precomposed" sizes="277x277" href="./static/logo.png">
<!-- IOS 主屏幕应用全屏 -->
<!-- <meta name="apple-mobile-web-app-capable" content="yes"> -->
<!-- 安卓 主屏幕应用全屏 -->
<!-- <meta name="mobile-web-app-capable" content="yes"> -->
<!-- 正式发布的时候使用，开发期间不启用。↓ -->
<!-- <script src="/h5/touch-emulator.js"></script>
<script>
TouchEmulator();
if (document.documentElement.clientWidth > 1024) {
window.location.href = '/h5/pcguide.html#'+location.pathname+location.search;
}
</script>
<style>
::-webkit-scrollbar{
display: none;
}
</style>
<script>
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?";// 百度统计key
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
</script> -->
<!-- 正式发布的时候使用，开发期间不启用。↑ -->
<script>
document.addEventListener('DOMContentLoaded', function() {
document.documentElement.style.fontSize = document.documentElement.clientWidth / 20 + 'px'
})
</script>
<link rel="stylesheet" href="<%= BASE_URL %>static/index.css" />
</head>
<body>
<!-- 该文件为 H5 平台的模板 HTML，并非应用入口。 -->
<!-- 请勿在此文件编写页面代码或直接运行此文件。 -->
<!-- 详见文档：https://uniapp.dcloud.io/collocation/manifest?id=h5-template -->
<noscript>
<strong>Please enable JavaScript to continue.</strong>
</noscript>
<div id="app"></div>
<!-- built files will be auto injected -->
<script>
/*BAIDU_STAT*/
</script>
</body>
</html>3.关联新建的template.html
到此，大功告成！！！