如何将移动应用程序与ionic2集成到实时gps和Geolocation

Question

在此代码映射和标记中运行良好，但标记位置未与实时地理位置集成，并且在标记出现后如果设备替换数百米则不显示移动。

initializeMap() {
  var minZoomLevel=16
Geolocation.getCurrentPosition().then((position) => {
this.map = new google.maps.Map(document.getElementById('map_canvas'),
{
zoom: minZoomLevel,
center: new google.maps.LatLng(position.coords.latitude, position.coords.longitude),
mapTypeControl: false,
streetViewControl: false,
disableDefaultUI: true,
mapTypeId: google.maps.MapTypeId.ROADMAP
});

var trafficLayer = new google.maps.TrafficLayer();
        trafficLayer.setMap(this.map);
        this.Marker();

  });

}

Marker(){ 
   let image = 'assets/img/Untitled-1.png';   
   let marker = new google.maps.Marker({    
    map: this.map,
    animation: google.maps.Animation.DROP,
    position: this.map.getCenter(),
   // draggable: true,
    icon: image
  });