ng-map在web中更新时不更新移动设备中的坐标

Question

关于在网络上拖延工作但不在移动设备上工作，我找不到这个问题背后的原因。

<div map-lazy-load="https://maps.google.com/maps/api/js" class="ng-map">
    <ng-map center="{{vm.map.center}}"
                  ng-class="{'drag-start' : vm.dragging, 'drag-end': !vm.dragging && !vm.isLoading, 'is-loading': vm.isLoading}"
                  on-dragstart="vm.dragStart()"
                  on-drag="vm.drag()"
                  on-dragend = "vm.dragEnd()"
                  zoom="{{vm.map.zoom}}"
                  map-type-control="{{vm.map.options.mapTypeControl}}"
                  zoom-control="{{vm.map.options.zoomControl}}">
        <custom-marker on-click="vm.loadRestaurants()" position="{{vm.marker.position}}">
            <div class="current-marker">
                <img ng-src="{{vm.marker.options.icon}}" />
            </div>
        </custom-marker>

        <custom-marker ng-repeat="restaurant in vm.models" position="{{restaurant.address.latitude}}, {{restaurant.address.longitude}}" id="{{restaurant.id}}">
            <div>
                <img ng-src="{{restaurant.options.icon}}" />
            </div>
        </custom-marker>
    </ng-map>
</div>

vm.drag = function() {
          vm.marker.position = [vm.mapInstance.center.lat(), vm.mapInstance.center.lng()];
      };