如何实现移动端的城市定位以及城市区域代码adcode-Tutorial H5-php.cn

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使用高德定位API ：

AMap.Map('iCenter')
AMap.CitySearch()

先在高德开放平台注册申请定位权限的key。网站；高德开放平台

在需要定位的页面引入有定位key的script

<!doctype html>
<html>
<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <title>基本引入展示</title>
    <script src="https://webapi.amap.com/maps?v=1.4.8&key=您申请的key值"></script>

</head>
<body>
<p id="container"></p>

</body>
</html>

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使用高德定位API

需求：苹果设备使用IP定位，其他使用gps定位

function getlocation() {


  
            var u = navigator.userAgent;

            var ua = navigator.userAgent.toLowerCase();

            var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端
            var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端


            //GPS定位
            function locationForGPS() {
            /*********跟踪标记**********/   console.log('GPS定位开始+++');
                var map, geolocation;
                //加载地图，调用浏览器定位服务
                map = new AMap.Map('iCenter');
                map.plugin('AMap.Geolocation', function() {
                    geolocation = new AMap.Geolocation({
                        enableHighAccuracy: false,//是否使用高精度定位，默认:true
                        timeout: 10000,          //超过10秒后停止定位，默认：无穷大
                    });
                    map.addControl(geolocation);
                    geolocation.getCurrentPosition();
                    
                    //getCityInfo是高德GPS定位里面的一个方法，先返回ip定位数据，由于IP定位有可能不准确，所以后面用GPS数据修正
                    //
                    geolocation.getCityInfo(function(status,result){
                    /*********跟踪标记**********/    console.log('与GPS同步IP定位开始，进行数据写入+++');
                        if (status === 'complete' && result.info === 'SUCCESS') {
                    /*********跟踪标记**********/    console.log('同步IP定位成功，进行数据写入+++');
                            if(isNull(sessionStorage.getItem('autouserchooselocationct'))){
                                /*********跟踪标记**********/     console.log('未检测检查有上一次定位数据，进行数据写入+++');
                                let cityAdcode=result.adcode;
                                let cityName=result.city;
                                
                                sessionStorage.setItem('autouserchooselocationct', cityName);
                                sessionStorage.setItem('autouserchooselocationcode', cityAdcode);

                           
                                 /*********跟踪标记**********/    console.log('同步IP定位结束，进行数据写入完成+++');
                            }
                        }
                    });


                    AMap.event.addListener(geolocation, 'complete', onComplete);//返回定位信息
                    AMap.event.addListener(geolocation, 'error', onError);      //返回定位出错信息




                });

                //GPS定位成功
                function onComplete(data) {
                    console.log(data)
                     /*********跟踪标记**********/  console.log('GPS定位启动+++');
                     //gsp定位精确到区，返回的adcode精确到了城市下属的区域，
                     //想要获取城市的abcode还需要使用高德的另一个API，城市区域查询
                   
                    let cityName=data.addressComponent.city;

                    let geocoder = new AMap.Geocoder({});
                    //地理编码,返回地理编码结果，
                    
                    geocoder.getLocation(cityName, function(status, result) {
                        if (status === 'complete' && result.info === 'OK') {
                        /*********跟踪标记**********/       console.log('GPS定位成功，处理定位数据+++');

                        /*********跟踪标记**********/     console.log('进行数据写入，覆盖同步IP的数据+++');
                                let cityAdcode=result.geocodes[0].adcode;
                                sessionStorage.setItem('autouserchooselocationct', cityName);
                                sessionStorage.setItem('autouserchooselocationcode', cityAdcode);
                     
                               /*********跟踪标记**********/    console.log('GPS定位结束，进行数据写入完成+++');
                            }


                    });

                }

                //GPS定位失败
                function onError() {
                    /*********跟踪标记**********/ console.log('GPS定位失败开始启用ip定位+++');
                    locationForIp(true);
                     /*********跟踪标记**********/  console.log('gps-ip++...')
                }

            }

            //IP定位
            function locationForIp(tap) {
                 /*********跟踪标记**********/if(tap){ console.log('GPS定位失败开始启用ip定位+++');}
                     /*********跟踪标记**********/ console.log('ip定位开始+++');
                var citysearch = new AMap.CitySearch();
                //自动获取用户IP，返回当前城市
                citysearch.getLocalCity(function (status, result) {
                    if (status === 'complete' && result.info === 'OK') {
                        if (result && result.city && result.bounds) {
                            let GetUserLocation = result.city,
                                GetUserLocationcode = result.adcode;
                                /*********跟踪标记**********/console.log('ip定位成功，开始检查是否有上一次定位数据+++');
                            if(isNull(sessionStorage.getItem('autouserchooselocationct'))){
                             /*********跟踪标记**********/console.log('ip定位成功，未检测检查有上一次定位数据，进行数据写入+++');
                                sessionStorage.setItem('autouserchooselocationct', GetUserLocation);
                                sessionStorage.setItem('autouserchooselocationcode', GetUserLocationcode);

                     
                             /*********跟踪标记**********/console.log('ip定位成功，进行数据写入结束+++');
                            }
                        }
                    } else {

                   
                 /*********跟踪标记**********/console.log('ip定位失败，进行数据写入结束+++');
                    }

                })

            }

            if(isiOS){
                /*********跟踪标记**********/console.log('ios设备启用IP定位');
                locationForIp(false);

            }else {
                /*********跟踪标记**********/console.log('非ios设备启用GPS定位');
                locationForGPS()
            }

        }


};

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