Question

当我点击地图时，我希望标记能够到达最近的街道。这里有一个很好的例子： http://econym.org.uk/gmap/example_snappath.htm（主页：http://econym.org.uk/gmap/snap.htm）。但是 - 此示例适用于Google地图版本2.是否有办法在v3中执行此操作？

Answer 1

您给出的示例通过执行方向查找然后从中获取第一个位置来获得结果。在api v3中，这是通过以下代码完成的，其中“ map ”是地图的名称

var directionsService = new google.maps.DirectionsService();

google.maps.event.addListener(map, 'click', function(event) {
    var request = {
        origin:event.latLng, 
        destination:event.latLng,
        travelMode: google.maps.DirectionsTravelMode.DRIVING
    };

    directionsService.route(request, function(response, status) {
      if (status == google.maps.DirectionsStatus.OK) {
          var marker = new google.maps.Marker({
             position: response.routes[0].legs[0].start_location, 
             map: map,
             title:"Hello World!"
          });
      }
    });
});

Answer 2

非常感谢Revolution42它非常好用

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
      html { height: 100% }
      body { height: 100%; margin: 0; padding: 0 }
      #map_canvas { height: 100% }
    </style>
    <script type="text/javascript"
      src="http://maps.googleapis.com/maps/api/js?key=YOU API KEY&sensor=false">
    </script>
    <script type="text/javascript">
      function initialize() {
        var myOptions = {
          center: new google.maps.LatLng(-34.397, 150.644),
          zoom: 8,
          mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        var map = new google.maps.Map(document.getElementById("map_canvas"),
            myOptions);


var directionsService = new google.maps.DirectionsService();

      google.maps.event.addListener(map, 'click', function(event) {
      var request = {
        origin:event.latLng, 
        destination:event.latLng,
        travelMode: google.maps.DirectionsTravelMode.DRIVING
      };

      directionsService.route(request, function(response, status) {
      if (status == google.maps.DirectionsStatus.OK) {
          var marker = new google.maps.Marker({
             position: response.routes[0].legs[0].start_location, 
             map: map,
             title:"Hello World!"
          });
      }
    });
});


}



    </script>
  </head>
  <body onload="initialize()">
    <div id="map_canvas" style="width:100%; height:100%"></div>
  </body>
</html>

Google Maps V3与最近的街道对齐

2 个答案: