最详细的geolocation

lixinlixin2008

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Google Mobile IE WinCE Windows Mobile

题目有点标题党，呵呵，别介意。

参考了Google，baidu还有街旁的GeoLocation代码

	<!doctype html>
	<html>
	<head>
		<meta name="apple-mobile-web-app-capable" content="yes" />
		<meta name="apple-mobile-web-app-status-bar-style" content="black" />
		<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
		<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0;" name="viewport" />
		<title>test</title>
		<style>

		</style>
		<script>
////大部分浏览器位置服务调用的Google的一个服务，这个服务不仅可以IP定位，还有很多的其他定位方式，总之很强大

				function initLocation() {
					// We are already defined. Hooray!
					if (window.google && google.gears) {
						return;
					}

					var factory = null;

					// Firefox
					if (typeof GearsFactory != 'undefined') {
						factory = new GearsFactory();
					} else {
						// IE
						try {
						  factory = new ActiveXObject('Gears.Factory');
						  // privateSetGlobalObject is only required and supported on IE Mobile on
						  // WinCE.
						  if (factory.getBuildInfo().indexOf('ie_mobile') != -1) {
							factory.privateSetGlobalObject(this);
						  }
						} catch (e) {
						  // Safari
						  if ((typeof navigator.mimeTypes != 'undefined') && navigator.mimeTypes["application/x-googlegears"]) {
							factory = document.createElement("object");
							factory.style.display = "none";
							factory.width = 0;
							factory.height = 0;
							factory.type = "application/x-googlegears";
							document.documentElement.appendChild(factory);
							if(factory && (typeof factory.create == 'undefined')) {
							  // If NP_Initialize() returns an error, factory will still be created.
							  // We need to make sure this case doesn't cause Gears to appear to
							  // have been initialized.
							  factory = null;
							}
						  }
						}
					}

					// *Do not* define any objects if Gears is not installed. This mimics the
					// behavior of Gears defining the objects in the future.
					if (!factory) {
						return;
					}

					// Now set up the objects, being careful not to overwrite anything.
					//
					// Note: In Internet Explorer for Windows Mobile, you can't add properties to
					// the window object. However, global objects are automatically added as
					// properties of the window object in all browsers.
					if (!window.google) {
						google = {};
					}

					if (!google.gears) {
						google.gears = {factory: factory};
					}
				};
				
				function getGeoLocation(okCallback,errorCallback){
					initLocation();
					try {
						if(navigator.geolocation) {
							geo = navigator.geolocation;
						} else {
							geo = google.gears.factory.create('beta.geolocation');
						}
					}catch(e){}

					if (geo) {
						//watch会触发多次，以便随时监控ip改变，iphone在开始会调用两次，屏幕旋转和解锁也会调用，汗。。。
						//navigator.geolocation.watchPosition(successCallback, errorCallback, options);
						geo.getCurrentPosition(okCallback , errorCallback);
					} else {
						alert("不好意思，你不让我定位！");
					}
				
				}
				

				function okCallback(d){
					alert('当前位置(纬度，经度): ' + d.latitude + ',' + d.longitude);
					//iphone
					if(d.coords)
						alert('当前位置(纬度，经度): ' + d.coords.latitude + ',' + d.coords.longitude);
					if(d.gearsAddress)
						alert(d.gearsAddress.city);

				};
				function errorCallback(err){
				  alert(err.message);
				};

		</script>
	</head>
	<body>
		咔咔咔咔咔
		<input onclick="getGeoLocation(okCallback,errorCallback)" type="button" value="errr">
	</body>
	</html>

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touch和mouse事件区别之一 | 简单搭建mobile web app开发环境

2010-11-18 11:20
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