Angular 删除 Google 地图标记

Question

我正在尝试通过单击按钮从地图上删除所有标记；

gmarkers = []; //define empty array for all markers

添加标记，显示地图：

addMarkersToMap(markers) { 
    for(let marker of markers) {
    var  position = new google.maps.LatLng(marker.latitude,   marker.longitude);
    var myMarker = new google.maps.Marker({
       position: position,
       title: marker.name
     });
     myMarker(this.map);
     this.gmarkers.push(marker); //push all markers to gmarkers array
   }
}

删除标记：

removeMarkers(){
  if (this.gmarkers) {
      for (let i in this.gmarkers) {
        this.gmarkers[i].setMap(null);
      }

      this.gmarkers = [];
   }
}

也尝试用这种方法删除：

removeMarkers(){
    for(var i=0; i<this.gmarkers.length; i++){
      this.gmarkers[i].setMap(null);
    }
   this.gmarkers = [];
}

我收到错误：

this.gmarkers[i].setMap is not a function

Answer 1

试试这个：改用 foreach

removeMarkers(){
    this.gmarkers.foreach((marker)=>{
        marker.setMap(null);
        marker = null;
    })
   this.gmarkers = [];
}

并且在您的 addMarkersToMap() 方法中，您正在推送 marker 变量，而不是您需要将 myMarker 推送到 gmarkers 我猜。

addMarkersToMap(markers) { 
    for(let marker of markers) {
    var  position = new google.maps.LatLng(marker.latitude,   marker.longitude);
    var myMarker = new google.maps.Marker({
       position: position,
       title: marker.name
     });
     myMarker(this.map);
     //replace marker with myMarker
     this.gmarkers.push(myMarker); //push all markers to gmarkers array
   }
}

Angular 删除 Google 地图标记

Angular Remove Google map Markers

google-maps-markers

typescript

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angular