如何在谷歌地图v3中更改路线的颜色

本文介绍了如何在谷歌地图v3中更改路线的颜色的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我使用此获取两点之间的路线。是否有可能从蓝色更改路线的颜色？
我没有在我的代码中使用折线。

I am using this code to get directions between two points. Is it possible to change the color of the route from blue?I am not using polyline in my code.

Thanx提前：）

Thanx in advance :)

推荐答案

使用可选的 struct。

You can specify the color of the line when you create the DirectionsRenderer, using the optional DirectionsRendererOptions struct.

这适用于我，只需更改DirectionsRendered对象创建的行即可：

This works for me, simply changing the line where the DirectionsRendered object is created:

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Directions service</title>
    <link href="https://google-developers.appspot.com/maps/documentation/javascript/examples/default.css" rel="stylesheet">
    <script src="https://maps.googleapis.com/maps/api/js?v=3"></script>
    <script>
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
var map;

function initialize() {
  directionsDisplay = new google.maps.DirectionsRenderer({
    polylineOptions: {
      strokeColor: "red"
    }
  });

  var mapOptions = {
    zoom:7,
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    center: {lat: 41.850033, lng: -87.6500523}
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  directionsDisplay.setMap(map);
}

function calcRoute() {
  var start = document.getElementById('start').value;
  var end = document.getElementById('end').value;
  var request = {
      origin:start,
      destination:end,
      travelMode: google.maps.DirectionsTravelMode.DRIVING
  };
  directionsService.route(request, function(response, status) {
    if (status == google.maps.DirectionsStatus.OK) {
      directionsDisplay.setDirections(response);
    }
  });
}

google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
    <div id="panel">
    <b>Start: </b>
    <select id="start" onchange="calcRoute();">
      <option value="chicago, il">Chicago</option>
      <option value="st louis, mo">St Louis</option>
      <option value="joplin, mo">Joplin, MO</option>
      <option value="oklahoma city, ok">Oklahoma City</option>
      <option value="amarillo, tx">Amarillo</option>
      <option value="gallup, nm">Gallup, NM</option>
      <option value="flagstaff, az">Flagstaff, AZ</option>
      <option value="winona, az">Winona</option>
      <option value="kingman, az">Kingman</option>
      <option value="barstow, ca">Barstow</option>
      <option value="san bernardino, ca">San Bernardino</option>
      <option value="los angeles, ca">Los Angeles</option>
    </select>
    <b>End: </b>
    <select id="end" onchange="calcRoute();">
      <option value="chicago, il">Chicago</option>
      <option value="st louis, mo">St Louis</option>
      <option value="joplin, mo">Joplin, MO</option>
      <option value="oklahoma city, ok">Oklahoma City</option>
      <option value="amarillo, tx">Amarillo</option>
      <option value="gallup, nm">Gallup, NM</option>
      <option value="flagstaff, az">Flagstaff, AZ</option>
      <option value="winona, az">Winona</option>
      <option value="kingman, az">Kingman</option>
      <option value="barstow, ca">Barstow</option>
      <option value="san bernardino, ca">San Bernardino</option>
      <option value="los angeles, ca">Los Angeles</option>
    </select>
    </div>
    <div id="map-canvas"></div>
  </body>
</html>

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