在Google Maps API v3中切换多个KML/KML图层

Question

在Google Maps API v3中切换多个KML/KML图层

google-mapsgoogle-maps-api-3google-maps-markerskml

5

我一直在尝试在谷歌地图中切换KML层。我已经设置好了，只有一个层显示，没有任何切换按钮。我在网上跟随了许多示例，但都不起作用。到目前为止，我设置的代码如下：

<html>
<head>
<script type="text/javascript">
var layers=[];
layers[0] = new  google.maps.KmlLayer('http://wrf1.geology.um.maine.edu/bipush/kml/plot_5254.kml',
 {preserveViewport: true});
layers[1] = new google.maps.KmlLayer('http://wrf1.geology.um.maine.edu/bipush/kml/plot_5938.kmz',
{preserveViewport: true});
var map;

function initialize() {
    var latlng = new google.maps.LatLng(52.5028910, 13.41032740);
    var myOptions = {
            zoom: 3,
            center: latlng,
            mapTypeIds: google.maps.MapTypeId.ROADMAP
    }
            map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
    }

function toggleLayers(i)
{
        if(layers[i].getmap()==null){
                kmlLayer01.setMap(null);
        }
        else{
                    layers[i].setMap(null);
            }
}


</script> </head>
<body onload="initialize()">
Layer1 <input type="checkbox" id="layer_01" onclick="toggleLayers(0);"/>
Layer2 <input type="checkbox" id="layer_02" onclick="toggleLayers(1);"/>
<div id="map_canvas"></div>
</body>
</html>

请帮忙！

- KuroNeko

2个回答

0

Ravin，

如果你有两个不同的地图，请将一个变量传递到函数中，例如：

function toggleLayers(i,theMap)
{

 if(layers[i].getMap()==null) {
     layers[i].setMap(theMap);
  }
  else {
     layers[i].setMap(null);
}
  document.getElementById('status').innerHTML += "toggleLayers("+i+") [setMap("+layers[i].getMap()+"] returns status: "+layers[i].getStatus()+"<br>";
}

Lea。

- LeasMaps

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可以查看英文原文，
原文链接

- geocodezip · Accepted Answer

the posted code does not include the API, this is missing:

 <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>

There are a few typos:

javascript is case sensitive getmap is not a valid method name, should be getMap.

kmlLayer01 is not defined, probably should be layers[i]

      <html>
      <head>
      <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>

      <script type="text/javascript">
      var layers=[];

      layers[0] = new  google.maps.KmlLayer('http://wrf1.geology.um.maine.edu/bipush/kml/plot_5254.kml',
      {preserveViewport: true});

      layers[1] = new google.maps.KmlLayer('http://wrf1.geology.um.maine.edu/bipush/kml/plot_5938.kmz',
      {preserveViewport: true});
      var map;

      function initialize() {
          var latlng = new google.maps.LatLng(52.5028910, 13.41032740);
          var myOptions = {
                  zoom: 3,
                  center: latlng,
                  mapTypeIds: google.maps.MapTypeId.ROADMAP
          }
          map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
      }

      function toggleLayers(i)
      {

        if(layers[i].getMap()==null) {
           layers[i].setMap(map);
        }
        else {
           layers[i].setMap(null);
        }
        document.getElementById('status').innerHTML += "toggleLayers("+i+") [setMap("+layers[i].getMap()+"] returns status: "+layers[i].getStatus()+"<br>";
      }


      </script>
      </head>
      <body onload="initialize()">
      Layer1 <input type="checkbox" id="layer_01" onclick="toggleLayers(0);"/>
      Layer2 <input type="checkbox" id="layer_02" onclick="toggleLayers(1);"/>
      <div id="map_canvas" style="height:500px; width:600px;"></div>
      <div id="status"></div>
      </body>
      </html>

实际运行示例

代码片段：

var layers = [];

layers[0] = new google.maps.KmlLayer("http://www.geocodezip.com/geoxml3_test/utah-hunt_com_DeerSouthern_kml.xml",
  /*'http://wrf1.geology.um.maine.edu/bipush/kml/plot_5254.kml', original KML no longer available */
  {
    preserveViewport: true
  });

layers[1] = new google.maps.KmlLayer("http://www.geocodezip.com/geoxml3_test/utah-hunt_com_DeerSoutheastern_kml.xml",
  /* 'http://wrf1.geology.um.maine.edu/bipush/kml/plot_5938.kmz', original KML no longer available */
  {
    preserveViewport: true
  });
var map;

function initialize() {
  var latlng = new google.maps.LatLng(38, -112 /*52.5028910, 13.41032740 */ );
  var myOptions = {
    zoom: 5,
    center: latlng,
    mapTypeIds: google.maps.MapTypeId.ROADMAP
  }
  map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
}

function toggleLayers(i) {

  if (layers[i].getMap() == null) {
    layers[i].setMap(map);
  } else {
    layers[i].setMap(null);
  }
  document.getElementById('status').innerHTML += "toggleLayers(" + i + ") [setMap(" + layers[i].getMap() + "] returns status: " + layers[i].getStatus() + "<br>";
}

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

<script src="http://maps.google.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
Layer1
<input type="checkbox" id="layer_01" onclick="toggleLayers(0);" />Layer2
<input type="checkbox" id="layer_02" onclick="toggleLayers(1);" />
<div id="map_canvas" style="height:500px; width:600px;"></div>
<div id="status"></div>