编辑谷歌地图折线事件处理?(Event handler for editing a Google M

2019-08-18 04:01发布

我在寻找的是火,而你正在编辑在谷歌地图折线,类似上的标记是“拖拽”事件的事件。 我找到了“capturing_changed”事件,但它似乎开枪的dragstart和dragend,而不是阻力。 正如我在通过允许标记被拖动,并根据标记所在的更新折线,基本上重塑编辑折线推倒重来。 我希望能够添加标记,这可编辑折线做顺利,但我必须要能拖就察觉。 我找不到API文档中或在谷歌搜索什么,所以我认为我会问这里。

Answer 1:

在从文档简单折线例如修改,添加上变更(insert_at,remove_at,set_at,dragend)事件。

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Google Maps JavaScript API v3 Example: Polyline Simple</title>
    <link href="/maps/documentation/javascript/examples/default.css" rel="stylesheet">
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
    <script>
var flightPath = null;

      function initialize() {
        var myLatLng = new google.maps.LatLng(0, -180);
        var mapOptions = {
          zoom: 3,
          center: myLatLng,
          mapTypeId: google.maps.MapTypeId.TERRAIN
        };

        var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);

        var flightPlanCoordinates = [
            new google.maps.LatLng(37.772323, -122.214897),
            new google.maps.LatLng(21.291982, -157.821856),
            new google.maps.LatLng(-18.142599, 178.431),
            new google.maps.LatLng(-27.46758, 153.027892)
        ];
        flightPath = new google.maps.Polyline({
          path: flightPlanCoordinates,
          strokeColor: '#FF0000',
          strokeOpacity: 1.0,
          strokeWeight: 2,
          editable: true,
          draggable: true
        });
        google.maps.event.addListener(flightPath, "dragend", getPath);
        google.maps.event.addListener(flightPath.getPath(), "insert_at", getPath);
        google.maps.event.addListener(flightPath.getPath(), "remove_at", getPath);
        google.maps.event.addListener(flightPath.getPath(), "set_at", getPath);
        flightPath.setMap(map);
      }

function getPath() {
   var path = flightPath.getPath();
   var len = path.getLength();
   var coordStr = "";
   for (var i=0; i<len; i++) {
     coordStr += path.getAt(i).toUrlValue(6)+"<br>";
   }
   document.getElementById('path').innerHTML = coordStr;
}

    </script>
  </head>
  <body onload="initialize()">
    <div id="map-canvas" style="height:500px; width:600px;"></div>
    <div id="path"></div>
  </body>
</html>

工作示例

代码片段:

 var flightPath = null; function initialize() { var myLatLng = new google.maps.LatLng(0, -180); var mapOptions = { zoom: 3, center: myLatLng, mapTypeId: google.maps.MapTypeId.TERRAIN }; var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions); var flightPlanCoordinates = [ new google.maps.LatLng(37.772323, -122.214897), new google.maps.LatLng(21.291982, -157.821856), new google.maps.LatLng(-18.142599, 178.431), new google.maps.LatLng(-27.46758, 153.027892) ]; flightPath = new google.maps.Polyline({ path: flightPlanCoordinates, strokeColor: '#FF0000', strokeOpacity: 1.0, strokeWeight: 2, editable: true, draggable: true }); google.maps.event.addListener(flightPath, "dragend", getPath); google.maps.event.addListener(flightPath.getPath(), "insert_at", getPath); google.maps.event.addListener(flightPath.getPath(), "remove_at", getPath); google.maps.event.addListener(flightPath.getPath(), "set_at", getPath); flightPath.setMap(map); } function getPath() { var path = flightPath.getPath(); var len = path.getLength(); var coordStr = ""; for (var i = 0; i < len; i++) { coordStr += path.getAt(i).toUrlValue(6) + "<br>"; } document.getElementById('path').innerHTML = coordStr; } google.maps.event.addDomListener(window, 'load', initialize); 
 <script src="https://maps.googleapis.com/maps/api/js"></script> <div id="path"></div> <div id="map-canvas" style="height:500px; width:600px;"></div> 



文章来源: Event handler for editing a Google Maps Polyline?