Google Maps API 进级：监听键盘鼠标事件 加载KML或者GEORSS文档

转自：http://hi.baidu.com/xfm_zhr/blog/item/0d34b21076b26706203f2e34.html

监听键盘鼠标事件

Google已经集成了各种基本事件的监听及动作。只需开启相应的功能即可。

var map = new GMap2(document.getElementById("map"));

    map.enableScrollWheelZoom();

    map.setCenter(new GLatLng(39.92, 116.46), 4);

var kh = new GKeyboardHandler(map);

 

利用GeoCoder地理编码查询信息

    var map;

   

    //地理编码查询地点经纬度

    function locate(address)

    {

        var geocoder=new GClientGeocoder();

        geocoder.getLatLng(address,function(point)

          {

            if(!point)

            {

              alert(address+" not found");

            }

            else

            {

              map.panTo(point);

              var marker = new GMarker(point);

              map.addOverlay(marker);

            }

          });

    }

   

    function load() {

      if (GBrowserIsCompatible()) {

        map = new GMap2(document.getElementById("map"));

        map.addControl(new GSmallMapControl());

        map.addControl(new GMapTypeControl());

       

        var geoPoint= new GLatLng(39.92, -116.46);

       

        map.setCenter(geoPoint, 4);

       

        GEvent.addListener(map, "click", function()

                    {

                      locate(prompt("请输入需要查询的地址", ""));

                    });

      }

}

 

加载KML或者GEORSS文档

示例代码：

    //加载KML或GeoRSS

    function loadXML(url)

    {

      var gx = new GGeoXml(url);

      map.addOverlay(gx);

    }

   

    function load() {

      if (GBrowserIsCompatible()) {

        map = new GMap2(document.getElementById("map"));

        map.addControl(new GSmallMapControl());

        map.addControl(new GMapTypeControl());

       

        var geoPoint= new GLatLng(40, 158.9);

       

        map.setCenter(geoPoint, 2);

      }

    }