HTML5地理位置 – 无法在iOS上一直运行
目前与HTML5地理位置工作，我已经在所有的Web浏览器上testing，它似乎工作。 但是，当我在iPad上testing地理定位时，它一直适用于iPad mini，但是当我将它放在较大的iPad（iPad 2）上时，该位置似乎并不一直工作。
我试图做这个networking端，这样的解决scheme可以移植到多个平台，而不仅仅是iOS。
编辑：
刚刚尝试过，它在Safari浏览器中工作，但它不适用于iOS应用程序。
有没有人有任何想法，为什么它不工作？
互联网：尝试Wi-Fi和尝试热点，也试图打开Wi-Fi无需连接任何人。
iOS版本： 8.3
位置应显示在这里：
$("#status").html(currentLat + " " + currentLng); 码：
<!DOCTYPE html> <html> <head> <script src="js/jquery-1.11.3.min.js"></script> <script> //example $(document).ready(function(){ setInterval(function(){ getLocation(function(position) { //do something cool with position currentLat = position.coords.latitude; currentLng = position.coords.longitude; $("#status").html(currentLat + " " + currentLng); }); }, 1000); }); var GPSTimeout = 10; //init global var NOTE: I noticed that 10 gives me the quickest result but play around with this number to your own liking //function to be called where you want the location with the callback(position) function getLocation(callback) { if(navigator.geolocation) { var clickedTime = (new Date()).getTime(); //get the current time GPSTimeout = 10; //reset the timeout just in case you call it more then once ensurePosition(callback, clickedTime); //call recursive function to get position } return true; } //recursive position function function ensurePosition(callback, timestamp) { if(GPSTimeout < 6000)//set at what point you want to just give up { //call the geolocation function navigator.geolocation.getCurrentPosition( function(position) //on success { //if the timestamp that is returned minus the time that was set when called is greater then 0 the position is up to date if(position.timestamp - timestamp >= 0) { GPSTimeout = 10; //reset timeout just in case callback(position); //call the callback function you created } else //the gps that was returned is not current and needs to be refreshed { GPSTimeout += GPSTimeout; //increase the timeout by itself n*2 ensurePosition(callback, timestamp); //call itself to refresh } }, function() //error: gps failed so we will try again { GPSTimeout += GPSTimeout; //increase the timeout by itself n*2 ensurePosition(callback, timestamp);//call itself to try again }, {maximumAge:0, timeout:GPSTimeout} ) } } </script> </head> <body> <div id="wrapper"> <!-- Page heading --> <h1>Geolocation</h1> <!-- Status --> <p>Finding your location: <span id="status">checking...</span></p> </body> </html>
我以为你应该先得到位置的许可
添加NSLocationWhenInUseUsageDescription或NSLocationAlwaysUsageDescription在App-Info.plist并给它一个string。
尝试以上，看看是否有帮助。
简单的没有计时器
<!DOCTYPE html> <html> <head> <script src="http://code.jquery.com/jquery-1.11.3.min.js"></script> </head> <body> <BR><BR><BR><BR> <button onclick="getLocation()">get Location</button> <script> function getLocation() { if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(alertPosition); } else { alert("Geolocation is not supported."); } } function alertPosition(position) { alert("Latitude: " + position.coords.latitude + "<br>Longitude: " + position.coords.longitude); } </script> </body> </html>