本文出自APICloud官方论坛，
感谢论坛版主 zk.s的分享。
本期我们系统整理了打开地图的方法，对百度，高德，腾讯，苹果自带地图都进行了整合。
<!DOCTYPE HTML><html><head><meta charset="utf-8"><meta name="viewport" content="maximum-scale=1.0,minimum-scale=1.0,user-scalable=0,width=device-width,initial-scale=1.0"/><meta name="format-detection" content="telephone=no,email=no,date=no,address=no"><title>apicloud百度，高德，腾讯，苹果自带地图导航</title></head><body><div><button id="baidu">打开百度地图</button><button id="gaode">打开高德地图</button><button id="tencent">打开腾讯地图</button><button id="apple">打开苹果地图</button></div></body><script type="text/javascript" src="../script/api.js"></script><script type="text/javascript" src="../script/jquery.min.js"></script><script type="text/javascript">apiready = function(){//百度地图坐标var dname = "凤凰山";var lng = "113.857151";//经度var lat = "22.68097";//纬度$("#baidu").click(function () {open_bmap(dname, lng, lat);})$("#gaode").click(function () {var bd = bd_decrypt(lng, lat);open_amap(dname, bd.lng, bd.lat);})$("#tencent").click(function () {open_tmap(dname, lng, lat);})if(api.systemType == "ios") {$("#apple").click(function () {var bd = bd_decrypt(lng, lat);open_pmap(dname, bd.lng, bd.lat);})}else{$("#apple").hide();}}//打开百度地图function open_bmap(dname, lng, lat) {var uri = 'baidumap://map/direction?destination=name:'+dname+'|latlng:'+lat+','+lng+'&mode=driving&src=andr.cheyw';api.openApp({uri: uri,iosUrl: uri}, function(ret, err) {console.log(JSON.stringify(err))if(err.msg=="Application not installed" || err.msg=="未找到可执行的应用") {alert("请先安装百度地图");}});}//打开高德地图function open_amap(dname, lng, lat) {var uri = 'amapuri://route/plan/?dlat='+lat+'&dlon='+lng+'&dname='+dname+'&dev=0&t=0';var iosUrl = 'iosamap://path?sourceApplication=cheyw&dlat='+lat+'&dlon='+lng+'&dname='+dname+'&dev=0&t=0';api.openApp({uri: uri,iosUrl: iosUrl}, function(ret, err) {console.log(JSON.stringify(err))if(err.msg=="Application not installed" || err.msg=="未找到可执行的应用") {alert("请先安装高德地图");}});}//打开腾讯地图function open_tmap(dname, lng, lat) {var uri = 'qqmap://map/routeplan?type=drive&fromcoord=CurrentLocation&to='+dname+'&tocoord='+lat+','+lng+'&referer=OB4BZ-D4W3U-B7VVO-4PJWW-6TKDJ-WPB77';api.openApp({uri: uri,iosUrl: uri}, function(ret, err) {console.log(JSON.stringify(err))if(err.msg=="Application not installed" || err.msg=="未找到可执行的应用") {alert("请先安装腾讯地图");}});}//打开苹果地图function open_pmap(dname, lng, lat) {var uri = 'http://maps.apple.com/?q='+dname+'&daddr='+lat+','+lng+'';api.openApp({uri: uri,iosUrl: uri}, function(ret, err) {console.log(JSON.stringify(ret))console.log(JSON.stringify(err))});}//百度坐标转高德（传入经度、纬度）function bd_decrypt(bd_lng, bd_lat) {var X_PI = Math.PI * 3000.0 / 180.0;var x = bd_lng - 0.0065;var y = bd_lat - 0.006;var z = Math.sqrt(x * x + y * y) - 0.00002 * Math.sin(y * X_PI);var theta = Math.atan2(y, x) - 0.000003 * Math.cos(x * X_PI);var gg_lng = z * Math.cos(theta);var gg_lat = z * Math.sin(theta);return {lng: gg_lng, lat: gg_lat}}//高德坐标转百度（传入经度、纬度）function bd_encrypt(gg_lng, gg_lat) {var X_PI = Math.PI * 3000.0 / 180.0;var x = gg_lng, y = gg_lat;var z = Math.sqrt(x * x + y * y) + 0.00002 * Math.sin(y * X_PI);var theta = Math.atan2(y, x) + 0.000003 * Math.cos(x * X_PI);var bd_lng = z * Math.cos(theta) + 0.0065;var bd_lat = z * Math.sin(theta) + 0.006;return {bd_lat: bd_lat, bd_lng: bd_lng }}</script></html>
特别注意：
1.高德地图IOS和android的uri是不一样的。
2.不要用api.appInstalled去判断是否安装应用，IOS9以上好像无法检测。
3.仔细看bd_decrypt，bd_encrypt两个方法，别写反。
4.腾讯地图的经纬度和百度的相同，苹果自带地图的经纬度和高德相同。