缩小时如何删除/隐藏谷歌地图搜索图标？

Question

自动填充搜索功能在我的地图上运行良好，可以放大搜索到的地址并将自定义大头针居中放置，但大头针在所有缩放级别都保持在那里。我的目标是当用户缩小超过 18 级缩放时移除/隐藏图钉。我的猜测是带有“zoom_changed”的 google.maps.event.addListener 可能会起作用，但我不知道在哪里或如何将它放在这段代码中。提前感谢您的帮助。

    // Create the search box and link it to the UI element.
    var input = document.getElementById('pac-input');
    var searchBox = new google.maps.places.SearchBox(input);
    map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

    // Bias the SearchBox results towards current map's viewport.
    map.addListener('bounds_changed', function() {
      searchBox.setBounds(map.getBounds());
    });

    var markersS = [];
    // Listen for the event fired when the user selects a prediction and        
    // retrieve more details for that place.
    searchBox.addListener('places_changed', function() {
      var places = searchBox.getPlaces();

      if (places.length == 0) {
        return;
      }

      // Clear out the old markersS.
      markersS.forEach(function(marker) {
        marker.setMap(null);
      });
      markersS = [];

      // For each place, get the icon, name and location.
      var bounds = new google.maps.LatLngBounds();
      places.forEach(function(place) {
        if (!place.geometry) {
          console.log("Returned place contains no geometry");
          return;
        }
        var icon = {
          url: '.../HOME.png',
          anchor: new google.maps.Point(41.5, 64),
        };

       // Create a marker for each place and also set Zoom Condition.
        google.maps.event.addListener(map, 'zoom_changed', function() {
        var zoomS = map.getZoom();
        if (zoomS>=18) {
            markersS.push(new google.maps.Marker({
            map: map,
            icon: icon,
            title: place.name,
            position: place.geometry.location,
            //animation: google.maps.Animation.DROP
            }));
          }
        else if (zoomS<18) {
            markersS.forEach(function(marker) {
            marker.setMap(null);
            });
            markersS = [];
          }
        });

        if (place.geometry.viewport) {
          // Only geocodes have viewport.
          bounds.union(place.geometry.viewport);
        } else {
          bounds.extend(place.geometry.location);
        }
      });
      map.fitBounds(bounds);

    });

Answer 1

Zoom 在您的 initMap 函数中。只需使用条件语句即可。