利用百度地图API获取当前位置信息的实例

网络编程 2024/11/13 佚名

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利用百度地图API可以做很多事情，个人感觉最核心也是最基础的就是定位功能了。这里分享一个制作的JS可以实现登录网页后定位：

<script type="text/javascript"> 
var map; 
var gpsPoint; 
var baiduPoint; 
var gpsAddress; 
var baiduAddress; 
var x;
var y;
function getLocation() { 
//根据IP获取城市 
var myCity = new BMap.LocalCity(); 
myCity.get(getCityByIP); 

//获取GPS坐标 
if (navigator.geolocation) { 
navigator.geolocation.getCurrentPosition(showMap, handleError, { enableHighAccuracy: true, maximumAge: 1000 }); 
} else { 
alert("您的浏览器不支持使用HTML 5来获取地理位置服务"); 
} 
} 

function showMap(value) { 
var longitude = value.coords.longitude; 
var latitude = value.coords.latitude; 
map = new BMap.Map("map"); 
x=latitude;
y=longitude;
//alert("坐标经度为：" + latitude + "， 纬度为：" + longitude ); 
gpsPoint = new BMap.Point(longitude, latitude); // 创建点坐标 


//根据坐标逆解析地址 
var geoc = new BMap.Geocoder(); 
geoc.getLocation(gpsPoint, getCityByCoordinate); 

BMap.Convertor.translate(gpsPoint, 0, translateCallback); 
map.enableScrollWheelZoom(true);
} 

translateCallback = function (point) { 
baiduPoint = point; 
map.centerAndZoom(baiduPoint, 18); 
var geoc = new BMap.Geocoder(); 
geoc.getLocation(baiduPoint, getCityByBaiduCoordinate); 
} 

function getCityByCoordinate(rs) { 
gpsAddress = rs.addressComponents; 
var address = "GPS标注：" + gpsAddress.province + "," + gpsAddress.city + "," + gpsAddress.district + "," + gpsAddress.street + "," + gpsAddress.streetNumber; 
var marker = new BMap.Marker(gpsPoint); // 创建标注 
map.addOverlay(marker); // 将标注添加到地图中 
var labelgps = new BMap.Label(address, { offset: new BMap.Size(20, -10) }); 
marker.setLabel(labelgps); //添加GPS标注 
} 

function getCityByBaiduCoordinate(rs) { 
baiduAddress = rs.addressComponents; 
var address = "百度标注：" + baiduAddress.province + "," + baiduAddress.city + "," + baiduAddress.district + "," + baiduAddress.street + "," + baiduAddress.streetNumber; 
var marker = new BMap.Marker(baiduPoint); // 创建标注 
map.addOverlay(marker); // 将标注添加到地图中 
var labelbaidu = new BMap.Label(address, { offset: new BMap.Size(20, -10) }); 
marker.setLabel(labelbaidu); //添加百度标注 
} 

//根据IP获取城市 
function getCityByIP(rs) { 
var cityName = rs.name; 
alert("根据IP定位您所在的城市为:" + cityName); 
} 

function handleError(value) { 
switch (value.code) { 
case 1: 
alert("位置服务被拒绝"); 
break; 
case 2: 
alert("暂时获取不到位置信息"); 
break; 
case 3: 
alert("获取信息超时"); 
break; 
case 4: 
alert("未知错误"); 
break; 
} 
} 

function init() { 
getLocation(); 
} 

window.onload = init; 

</script>

完成定位功能后可以添加相关代码编辑地图控件覆盖物信息窗口等等各种功能。

附上百度地图连接：http://lbsyun.baidu.com/

以上这篇利用百度地图API获取当前位置信息的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。

获取当前位置信息