在开发H5需要获取定位的业务时,可以用到以下的方法:
const GDkey = ''; // 高德地图的key
function MapLoader(key) {
return new Promise((resolve, reject) => {
if (window.AMap) {
resolve(window.AMap)
} else {
var script = document.createElement('script')
script.type = 'text/javascript'
script.async = true
script.src = `https://webapi.amap.com/maps?v=1.4.15&key=${key}&callback=onLoad`
script.onerror = reject
document.head.appendChild(script)
}
window.initMap = () => {
resolve(window.AMap)
}
})
}
/**
* 有个地方需要注意,页面刚挂载完的时候,<script>还没添加到document里,需要在index.html里面先引入
* <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=申请的key"></script>
*/
/**
* @description 高德地图获取定位
*/
function GDLocation() {
return new Promise((resolve, reject) => {
// 高德定位
MapLoader(GDkey).then(
(AMap: any) => {
// 浏览器定位
AMap.plugin('AMap.Geolocation', function() {
const geolocation = new AMap.Geolocation({
enableHighAccuracy: true, //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
maximumAge: 0, //定位结果缓存0毫秒,默认:0
convert: true, //自动偏移坐标,偏移后的坐标为高德坐标,默认:true
showButton: true, //显示定位按钮,默认:true
buttonPosition: 'LB', //定位按钮停靠位置,默认:'LB',左下角
buttonOffset: new AMap.Pixel(10, 20), //定位按钮与设置的停靠位置的偏移量,默认:Pixel(10, 20)
showMarker: true, //定位成功后在定位到的位置显示点标记,默认:true
showCircle: true, //定位成功后用圆圈表示定位精度范围,默认:true
panToLocation: true, //定位成功后将定位到的位置作为地图中心点,默认:true
zoomToAccuracy: true, //定位成功后调整地图视野范围使定位位置及精度范围视野内可见,默认:false
});
geolocation.getCurrentPosition();
AMap.event.addListener(geolocation, 'complete', onComplete);
AMap.event.addListener(geolocation, 'error', onError);
function onComplete(data: any) {
// data是具体的定位信息
const latitude = data.position.lat; // 纬度
const longitude = data.position.lng; // 经度
const location = {
latitude: longitude,
longitude: latitude,
};
resolve(location);
}
function onError(data: any) {
// 定位出错
const location = ref({
latitude: '',
longitude: '',
});
resolve(location);
let errorType = data.message;
switch (errorType) {
case 'Browser not Support html5 geolocation.':
Toast('浏览器不支持原生定位接口');
break;
case 'Geolocation permission denied.':
Toast('定位不支持http,请升级https站点');
break;
case 'Get geolocation failed.':
Toast('定位失败');
break;
case 'Get geolocation time out.':
Toast('定位超时');
break;
case 'Get geolocation time out.Get ipLocation failed.':
Toast('定位超时');
break;
default:
Toast(errorType);
}
}
});
},
(e: any) => {
console.log('地图加载失败', e);
},
);
});
}
高德地图api获取定位的链接:https://lbs.amap.com/api/javascript-api/guide/services/geolocation
学习出处:https://www.jianshu.com/p/f65034cf7d24