无法实例化google.maps.Icon

Question

我试图实例化google.maps.Icon,

var icon = new google.maps.Icon({
    anchor:new google.maps.Point(0,0),
    origin:new google.maps.Point(0,0),
    scaledSize: new google.maps.Size(10,10),
    size: new google.maps.Size(10,10),
    url:"http://maps.google.com/mapfiles/kml/paddle/purple-square.png"
});

但我得到了错误,

Uncaught TypeError: undefined is not a function 

Answer 1

我无法解决这个问题:什么是构造接口`google.maps.Icon`(示例)

对我来说它适用于匿名对象:

    var image = {url: 'https://developers.google.com/maps/documentation/javascript/examples/images/beachflag.png',
        size: new google.maps.Size(20, 32),
        origin: new google.maps.Point(0,0),
        anchor: new google.maps.Point(0, 32)};

      var marker = new google.maps.Marker({
          position: myLatLng,
          map: map,
          icon: image,
      });

文档中的示例

带有图标的示例

代码段:

function initialize() {
  var mapOptions = {
    zoom: 10,
    center: new google.maps.LatLng(-33.9, 151.2),
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  var map = new google.maps.Map(document.getElementById('map_canvas'),
    mapOptions);

  setMarkers(map, beaches);
}

/**
 * Data for the markers consisting of a name, a LatLng and a zIndex for
 * the order in which these markers should display on top of each
 * other.
 */
var beaches = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1]
];

function setMarkers(map, locations) {
  // Add markers to the map

  // Marker sizes are expressed as a Size of X,Y
  // where the origin of the image (0,0) is located
  // in the top left of the image.

  // Origins, anchor positions and coordinates of the marker
  // increase in the X direction to the right and in
  // the Y direction down.
  var image = {
    anchor: new google.maps.Point(16, 32),
    origin: new google.maps.Point(0, 0),
    scaledSize: new google.maps.Size(32, 32),
    size: new google.maps.Size(64, 64),
    url: "http://maps.google.com/mapfiles/kml/paddle/purple-square.png"
  };

  for (var i = 0; i < locations.length; i++) {
    var beach = locations[i];
    var myLatLng = new google.maps.LatLng(beach[1], beach[2]);
    var marker = new google.maps.Marker({
      position: myLatLng,
      map: map,
      icon: image,
      title: beach[0],
      zIndex: Math.round(myLatLng.lat() * -100000) << 5
    });
  }
}

google.maps.event.addDomListener(window, 'load', initialize);

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map_canvas {
  height: 100%;
}
@media print {
  html,
  body {
    height: auto;
  }
  #map_canvas {
    height: 650px;
  }
}

<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas"></div>