实现效果
如下图所示,在手机浏览器中访问京东的手机版网站(m.jd.com),顶部会有一个广告图,点击这个广告图,如果手机上已经安装了京东App,则直接打开,如果没有安装,则开始下载。
实现方式
1.为Android应用的启动Activity设置一个Schema,如下:
2.用户点击浏览器中的链接时,在动态创建一个不可见的iframe,并且让这个iframe去加载步骤1中的Schema,如下:
var ifr = document.createElement('iframe');ifr.src="cundong://splash"
3,如果在指定的时间内没有跳转成功,则当前页跳转到apk的下载地址(或下载页),如下:
window.location = download_url;
HTML代码
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | <! doctype html> < html > < head > < meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" > < meta name = "apple-mobile-web-app-capable" content = "yes" > < meta name = "apple-mobile-web-app-status-bar-style" content = "black" /> < title >this's a demo</ title > < meta id = "viewport" name = "viewport" content = "width=device-width,initial-scale=1.0,minimum-scale=1.0,maximum-scale=1.0,minimal-ui" > </ head > < body > < div > < a id = "J-call-app" href = "javascript:;" class = "label" >立即打开>></ a > < input id = "J-download-app" type = "hidden" name = "storeurl" value = "http://m.chanyouji.cn/apk/chanyouji-2.2.0.apk" > </ div > < script > (function(){ var ua = navigator.userAgent.toLowerCase(); var t; var config = { /*scheme:必须*/ scheme_IOS: 'cundong://', scheme_Adr: 'cundong://splash', download_url: document.getElementById('J-download-app').value, timeout: 600 }; function openclient() { var startTime = Date.now(); var ifr = document.createElement('iframe'); ifr.src = ua.indexOf('os') > 0 ? config.scheme_IOS : config.scheme_Adr; ifr.style.display = 'none'; document.body.appendChild(ifr); var t = setTimeout(function() { var endTime = Date.now(); if (!startTime || endTime - startTime < config.timeout + 200) { window.location = config.download_url; } else { } }, config.timeout); window.onblur = function() { clearTimeout(t); } } window.addEventListener("DOMContentLoaded", function(){ document.getElementById("J-call-app").addEventListener('click',openclient,false); }, false); })() </ script > </ body > </ html > |