angular - 使用角度 10 中的纬度和经度从当前位置获取用户地址

Question

我是角度和开发的新手。谁能帮我解决这个任务？我搞砸了从当前位置获取用户地址的任务。当我用标记放大或缩小地图时，我可以得到该位置的正确地址。但是当我在地图上拖放标记时无法获取地址，任何人都可以解决这个问题。

        public mapReady(map) {
  debugger
  map.addListener("dragend", () => {
    console.log(this.centerLatitude, this.centerLongitude);
    this.apiloader.load().then(() => {  
      let geocoder = new google.maps.Geocoder;  
      let latlng = {  
          lat: this.centerLatitude,  
          lng: this.centerLongitude  
      };  
      geocoder.geocode({  
          'location': latlng  
      }, function(results) {  
          if (results[0]) {  
              this.currentLocation = results[0].formatted_address;  
              console.log(this.currentLocation);  
          } else {  
              console.log('Not found');  
          }  
      });  
  });  
    });
  }

public centerChanged(coords: google.maps.LatLngLiteral) {
  this.centerLatitude = coords.lat;
  this.centerLongitude = coords.lng;
  this.apiloader.load().then(() => {  
    let geocoder = new google.maps.Geocoder;  
    let latlng = {  
        lat: this.centerLatitude,  
        lng: this.centerLongitude  
    };  
    geocoder.geocode({  
        'location': latlng  
    }, function(results) {  
        if (results[0]) {  
            this.currentLocation = results[0].formatted_address;  
            console.log(this.currentLocation);  
        } else {  
            console.log('Not found');  
        }  
    });  
  });  
}
  private setCurrentLocation() {
    if ('geolocation' in navigator) {
      navigator.geolocation.getCurrentPosition((position) => {
        this.lat = position.coords.latitude;
        this.lng = position.coords.longitude;
        this.marlatitude = position.coords.latitude;
        this.marongitude = position.coords.longitude;
        this.zoom = 8;
        this.centerLatitude = this.marlatitude;
        this.centerLongitude = this.marongitude;
        this.apiloader.load().then(() => {  
            let geocoder = new google.maps.Geocoder;  
            let latlng = {  
                lat: this.centerLatitude,  
                lng: this.centerLongitude  
            };  
            geocoder.geocode({  
                'location': latlng  
            }, function(results) {  
                if (results[0]) {  
                    this.currentLocation = results[0].formatted_address;  
                    console.log(this.currentLocation);  
                } else {  
                    console.log('Not found');  
                }  
            });  
        });  
        console.log(position)
      });
    }
  }

<div class="map">
<agm-map
#agmMap
[latitude]="centerLatitude"
[longitude]="centerLongitude"
[zoom]="zoom"                                        
(mapReady)="mapReady($event)"
(centerChange)="centerChanged($event)">
    <agm-marker
        [(latitude)]="centerLatitude"
        [(longitude)]="centerLongitude"
        [markerDraggable]="draggable"
        (dragEnd)="mapReady($event)"
        (centerChange)="centerChanged($event)">
    </agm-marker>