高德地图：定位、覆盖物

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app.service("Map_g",function ($q) { this.getMessage=function (map) { //定位系统 
var defer = $q.defer(); 
map.plugin('AMap.Geolocation', function() {
 geolocation = new AMap.Geolocation({ enableHighAccuracy: true, 
timeout: 10000, 
buttonOffset: new AMap.Pixel(10, 20),
 zoomToAccuracy: false,
 buttonPosition:'RB' }); 
map.addControl(geolocation);
 geolocation.getCurrentPosition();
 AMap.event.addListener(geolocation, 'complete', onComplete); AMap.event.addListener(geolocation, 'error', onError); });
 function onComplete(data) { defer.resolve(data); } function onError(data) { defer.reject(data); } return defer.promise; } ; 
this.coverOperate=function (map,lang,lat,name) { //覆盖物 
var marker = new AMap.Marker({}); marker.setMap(map);
 var markerContent = document.createElement("div");
 markerContent.className="markWrap"; var markerImg = document.createElement("img");
 markerImg.className = "markerlnglat"; 
markerImg.src = "img/48.png";
 markerContent.appendChild(markerImg);
 var markerSpan = document.createElement("span");
 markerSpan.className = 'marker'; 
markerSpan.innerHTML = name; markerContent.appendChild(markerSpan);
 marker.setContent(markerContent);
 marker.setPosition([lang,lat]); }; }); 
$scope.getMap = function() { //定位开始，获取地理位置信息，拿到经纬度进行覆盖物操作。
 var geolocation; $scope.map = new AMap.Map('allmap', { resizeEnable: true });
 Map_g.getMessage($scope.map).then(function (data) { 
if(data.addressComponent != undefined && data.addressComponent != null && data.addressComponent.district){ 
$scope.isOpenLocation = false; $scope.original = {lang:data.position.getLng(),lat:data.position.getLat()}; 
$scope.require(data.addressComponent.province,data.addressComponent.city,data.addressComponent.district); 
$scope.headerName = data.addressComponent.district; $scope.$parent.district = data.addressComponent.district; 
}else{ $scope.getAllShops(); $scope.isOpenLocation = true; } },function (data) { angular.element("#gif").hide();
 $scope.getAllShops(); $scope.isOpenLocation = true; }); };
 $scope.getMap(); //$scope.map = $scope.map = new AMap.Map('allmap', { resizeEnable: true}); 
//longitude ，latitude 经纬度 //name 覆盖物展示文字 
Map_g.coverOperate($scope.map,val.longitude,val.latitude,val.name); 
//调用函数实现覆盖物的操做。 //计算两地点的距离 
var lnglat = new AMap.LngLat($scope.original.lang,$scope.original.lat); val.distance=parseInt(lnglat.distance([val.longitude,val.latitude])) + "米";