手機端APP/ 手機瀏覽器 Html5自動定位城市

第一步：簡單瞭解

html5爲window.navigator提供了geolocation屬性，用於獲取基於瀏覽器的當前用戶地理位置。

window.navigator.geolocation提供了3個方法分別是：

void getCurrentPosition(onSuccess,onError,options);//獲取用戶當前位置

int watchCurrentPosition(onSuccess,onError,options);//持續獲取當前用戶位置

void clearWatch(watchId);//watchId 爲watchCurrentPosition返回的值//取消監控

 

支持參數：//options能夠不寫，爲默認便可

options = {      enableHighAccuracy,//boolean 是否要求高精度的地理信息      timeout,//獲取信息的超時限制      maximumAge//對地理信息進行緩存的時間 }

 

 

第二步：Html 5 geolocation 實例代碼以下：

$(document).bind("pageinit", function (event, data) {        getLocation(); }); function getLocation() {     if (navigator.geolocation) {             navigator.geolocation.getCurrentPosition(                                  showPosition,//成功回調函數                                 getPositionError,//失敗回調函數                                     {//options參數配置                                      enableHighAccuracy:true,//boolean 是否要求高精度的地理信息                                        timeout:2000,                                          maximumAge:36000                                     } );     }     else {  //不支持，就拉倒吧。 } } //失敗回調函數： function getPositionError(error){       switch(error.code){           case error.TIMEOUT:             //  alert("鏈接超時，請重試");               break;           case error.PERMISSION_DENIED:               //alert("您拒絕了使用位置共享服務，查詢已取消");               break;           case error.POSITION_UNAVAILABLE:               //alert("親愛的火星網友，很是抱歉，咱們暫時沒法爲您所在的星球提供位置服務");               break;       }   }   //成功回調函數： function showPosition(position) { //內容在下面說。 }

成功返回的結果說明position：

當成功獲取地理位置信息時候，onsuccess方法中會返回position對象，經過這個對象能夠獲取地理位置的相關信息，包括：

 position對象的屬性：

latitude,//緯度

longitude,//經度

altitude,//海拔高度

accuracy,//獲取緯度或者經度的精度

altitudeAccurancy,//海拔高度的精度

heading,//設備前景方向。正北方向的順時針旋轉角

speed,//設備的前進速度 m/s

timestamp,//獲取地理位置信息時候的時間

 

第三步：根據經緯度 調用google接口獲取

 

googlemap.js: window.google = window.google || {}; google.maps = google.maps || {}; (function() {     function getScript(src) {     document.write('<' + 'script src="' + src + '"' +                    ' type="text/javascript"><' + '/script>');   }     var modules = google.maps.modules = {};   google.maps.__gjsload__ = function(name, text) {     modules[name] = text;   };     google.maps.Load = function(apiLoad) {     delete google.maps.Load;     apiLoad([0.009999999776482582,[[["http://mt0.googleapis.com/vt?lyrs=m@262000000\u0026src=api\u0026hl=zh-CN\u0026","http://mt1.googleapis.com/vt?lyrs=m@262000000\u0026src=api\u0026hl=zh-CN\u0026"],null,null,null,null,"m@262000000",["https://mts0.google.com/vt?lyrs=m@262000000\u0026src=api\u0026hl=zh-CN\u0026","https://mts1.google.com/vt?lyrs=m@262000000\u0026src=api\u0026hl=zh-CN\u0026"]],[["http://khm0.googleapis.com/kh?v=150\u0026hl=zh-CN\u0026","http://khm1.googleapis.com/kh?v=150\u0026hl=zh-CN\u0026"],null,null,null,1,"150",["https://khms0.google.com/kh?v=150\u0026hl=zh-CN\u0026","https://khms1.google.com/kh?v=150\u0026hl=zh-CN\u0026"]],[["http://mt0.googleapis.com/vt?lyrs=h@262000000\u0026src=api\u0026hl=zh-CN\u0026","http://mt1.googleapis.com/vt?lyrs=h@262000000\u0026src=api\u0026hl=zh-CN\u0026"],null,null,null,null,"h@262000000",["https://mts0.google.com/vt?lyrs=h@262000000\u0026src=api\u0026hl=zh-CN\u0026","https://mts1.google.com/vt?lyrs=h@262000000\u0026src=api\u0026hl=zh-CN\u0026"]],[["http://mt0.googleapis.com/vt?lyrs=t@132,r@262000000\u0026src=api\u0026hl=zh-CN\u0026","http://mt1.googleapis.com/vt?lyrs=t@132,r@262000000\u0026src=api\u0026hl=zh-CN\u0026"],null,null,null,null,"t@132,r@262000000",["https://mts0.google.com/vt?lyrs=t@132,r@262000000\u0026src=api\u0026hl=zh-CN\u0026","https://mts1.google.com/vt?lyrs=t@132,r@262000000\u0026src=api\u0026hl=zh-CN\u0026"]],null,null,[["http://cbk0.googleapis.com/cbk?","http://cbk1.googleapis.com/cbk?"]],[["http://khm0.googleapis.com/kh?v=84\u0026hl=zh-CN\u0026","http://khm1.googleapis.com/kh?v=84\u0026hl=zh-CN\u0026"],null,null,null,null,"84",["https://khms0.google.com/kh?v=84\u0026hl=zh-CN\u0026","https://khms1.google.com/kh?v=84\u0026hl=zh-CN\u0026"]],[["http://mt0.googleapis.com/mapslt?hl=zh-CN\u0026","http://mt1.googleapis.com/mapslt?hl=zh-CN\u0026"]],[["http://mt0.googleapis.com/mapslt/ft?hl=zh-CN\u0026","http://mt1.googleapis.com/mapslt/ft?hl=zh-CN\u0026"]],[["http://mt0.googleapis.com/vt?hl=zh-CN\u0026","http://mt1.googleapis.com/vt?hl=zh-CN\u0026"]],[["http://mt0.googleapis.com/mapslt/loom?hl=zh-CN\u0026","http://mt1.googleapis.com/mapslt/loom?hl=zh-CN\u0026"]],[["https://mts0.googleapis.com/mapslt?hl=zh-CN\u0026","https://mts1.googleapis.com/mapslt?hl=zh-CN\u0026"]],[["https://mts0.googleapis.com/mapslt/ft?hl=zh-CN\u0026","https://mts1.googleapis.com/mapslt/ft?hl=zh-CN\u0026"]],[["https://mts0.googleapis.com/mapslt/loom?hl=zh-CN\u0026","https://mts1.googleapis.com/mapslt/loom?hl=zh-CN\u0026"]]],["zh-CN","US",null,0,null,null,"http://maps.gstatic.com/mapfiles/","http://csi.gstatic.com","https://maps.googleapis.com","http://maps.googleapis.com"],["http://maps.gstatic.com/intl/zh_cn/mapfiles/api-3/17/0","3.17.0"],[3278673121],1,null,null,null,null,0,"",null,null,0,"http://khm.googleapis.com/mz?v=150\u0026",null,"https://earthbuilder.googleapis.com","https://earthbuilder.googleapis.com",null,"http://mt.googleapis.com/vt/icon",[["http://mt0.googleapis.com/vt","http://mt1.googleapis.com/vt"],["https://mts0.googleapis.com/vt","https://mts1.googleapis.com/vt"],[null,[[0,"m",262000000]],[null,"zh-CN","US",null,18,null,null,null,null,null,null,[[47],[37,[["smartmaps"]]]]],0],[null,[[0,"m",262000000]],[null,"zh-CN","US",null,18,null,null,null,null,null,null,[[47],[37,[["smartmaps"]]]]],3],[null,[[0,"m",262000000]],[null,"zh-CN","US",null,18,null,null,null,null,null,null,[[50],[37,[["smartmaps"]]]]],0],[null,[[0,"m",262000000]],[null,"zh-CN","US",null,18,null,null,null,null,null,null,[[50],[37,[["smartmaps"]]]]],3],[null,[[4,"t",132],[0,"r",132000000]],[null,"zh-CN","US",null,18,null,null,null,null,null,null,[[5],[37,[["smartmaps"]]]]],0],[null,[[4,"t",132],[0,"r",132000000]],[null,"zh-CN","US",null,18,null,null,null,null,null,null,[[5],[37,[["smartmaps"]]]]],3],[null,null,[null,"zh-CN","US",null,18],0],[null,null,[null,"zh-CN","US",null,18],3],[null,null,[null,"zh-CN","US",null,18],6],[null,null,[null,"zh-CN","US",null,18],0],["https://mts0.google.com/vt","https://mts1.google.com/vt"],"/maps/vt"],2,500,["http://geo0.ggpht.com/cbk?cb_client=maps_sv.uv_api_demo","http://www.gstatic.com/landmark/tour","http://www.gstatic.com/landmark/config","/maps/preview/reveal?authuser=0","/maps/preview/log204","/gen204?tbm=map","http://static.panoramio.com.storage.googleapis.com/photos/"]], loadScriptTime);   };   var loadScriptTime = (new Date).getTime();   getScript("http://maps.gstatic.com/intl/zh_cn/mapfiles/api-3/17/0/main.js"); })();

 

成功反饋結果

function showPosition(position) {

     var latlng = new google.maps.LatLng(position.coords.latitude, position.coords.longitude); //初始化一個google的經緯度對象    

     var geocoder = new   google.maps.Geocoder();

     geocoder.geocode({ 'latLng': latlng }, function (results, status) {

        if (status == google.maps.GeocoderStatus.OK) {            

            alter(results[0].address_components[2].short_name);  //定位城市   

        }        

        else

　　  {      

      　　alert("獲取位置失敗");        

　　　}    

    });

}