Google Maps JavaScript API - 在一种颜色中显示INACTIVE替代路线，在另一种颜色中显示ACTIVE替代路线 [英] Google Maps JavaScript API - Show INACTIVE alternative routes in one color, ACTIVE alternative route in another

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本文介绍了Google Maps JavaScript API - 在一种颜色中显示INACTIVE替代路线，在另一种颜色中显示ACTIVE替代路线的处理方法，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

我正在使用Google Maps JavaScript API，并为其他路线提供路线。



我想以灰色显示INACTIVE替代路线，当前的ACTIVE路线为霓虹绿色。



如何定位不活动和活动的路线状态并控制其颜色？

我已经能够使用更改替代路线颜色Geocodezip的示例，但现在我需要将目标设为无效状态和有效状态。



下面是我要做的功能的一个例子 

  for （var j = 0; j< response.routes.length; j ++）{
 var path = new google.maps.MVCArray（）; 
 polyArray.push（new google.maps.Polyline（{
 map：map，
 strokeColor：colors [j]，
 strokeOpacity：1.0，
 strokeWeight：5 
}））; 
 
 polyArray [polyArray.length  -  1] .setPath（path）; 
 for（var i = 0，len = response.routes [j] .overview_path.length; i< len; i ++）{
 path.push（response.routes [j] .overview_path [i ]）; 
 
 
 $ / code $ / pre 
 
 
 
 
 
 <！DOCTYPE html>< html> < HEAD> < meta name =viewportcontent =initial-scale = 1.0，user-scalable = no> < meta charset =utf-8> < title>路线服务< / title> <风格> html，body {height：100％;保证金：0;填充：0; } #map {height：100％; }＃floating-panel {position：absolute;顶部：10px;左：25％; z-index：5; background-color：#fff;填充：5px;边界：1px固体＃999; text-align：center; font-family：'Roboto'，'sans-serif'; line-height：30px; padding-left：10px; }< / style> < /头> <身体GT; < div id =floating-panel> < b>开始：< / b> < select id =start> < 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>俄克拉何马城< / 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>金曼< / option> < option value =barstow，ca> Barstow< / option> < option value =san bernardino，ca> San Bernardino< / option> < option value =los angeles，ca>洛杉矶< / option> < /选择> < b>结束：< / b> < select id =end> < 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>俄克拉何马城< / 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>金曼< / option> < option value =barstow，ca> Barstow< / option> < option value =san bernardino，ca> San Bernardino< / option> < option value =los angeles，ca>洛杉矶< / option> < /选择> < / DIV> < div id =map>< / div> <脚本> var polyArray = []; var colors;函数initMap（）{polyArray = [];颜色= ['＃ff0000'，'＃00ff00'，'＃0000ff'，'＃ffff00'，'＃ff00ff'，'＃00ffff']; var directionsService = new google.maps.DirectionsService; var directionsDisplay = new google.maps.DirectionsRenderer; var map = new google.maps.Map（document.getElementById（'map'），{zoom：7，center：{lat：41.85，lng：-87.65}}）; directionsDisplay.setMap（地图）; var onChangeHandler = function（）{calculateAndDisplayRoute（directionsService，directionsDisplay）; }; document.getElementById（'start'）。addEventListener（'change'，onChangeHandler）; document.getElementById（'end'）。addEventListener（'change'，onChangeHandler）; }函数calculateAndDisplayRoute（directionsService，directionsDisplay）{directionsService.route（{origin：document.getElementById（'start'）。value，destination：document.getElementById（'end'）。value，travelMode：'DRIVING'，provideRouteAlternatives：true} ，function（response，status）{if（status ==='OK'）{for（var j = 0; j< response.routes.length; j ++）{var path = new google.maps.MVCArray（）; polyArray.push（new google.maps.Polyline（{map：map，strokeColor：colors [j]，strokeOpacity：1.0，strokeWeight：5}））; polyArray [polyArray.length  -  1] .setPath（path）; for var i = 0，len = response.routes [j] .overview_path.length; i< len; i ++）{path.push（response.routes [j] .overview_path [i]）;}} directi onsDisplay.setDirections（响应）; } else {window.alert（'由于'+状态导致请求失败）; }}）; }< / script> < script async defer src =https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap> < /脚本> < / body>< / html>  
 
 
    
解决方案
当你激活一条路线时，通过多段线进行处理： 
 
 
     
     
  1. 设置strokeColor的全部路线为灰色
    2.  
     
  2. 将活动路线的折线颜色设置为活动颜色 
     
 概念证明小提琴（基于我参考的例子，点击折线来激活）
 
 
 代码段：  
 
 
 
 
 
  $（document）.ready（function（）{var markers = [{title：''，'lat'：'56 .965969'，'lng'：'24 .143496'，'description'：''}，{title：''，'lat'：'56 .966259'，'lng'：'24 .385860'，'description'：'' }]; var service = new google.maps.DirectionsService（）; var polyArray = []; var infoWindow = new google.maps.InfoWindow（）; var map = new google.maps.Map（document.getElementById（map_1），mapOptions）; var lat_lng = new Array（）; var colors = ['＃ff0000'，'＃00ff00'，'＃0000ff'，'＃ffff00'，'＃ff00ff'，'＃00ffff']; var image ='https://maps.google.com/mapfiles/ms/micons/blue.png'; var marker = new google.maps.Marker（{position：new google.maps.LatLng（56.966259，24.385860），map：map，title：'Sillava'，icon：image}）;对于（i = 0; i  
 
  .map {width：100％;身高：100％;} body，html {height：100％; width：100％;}  
 
 < script src = https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js\"></script><script src =https://maps.googleapis.com/maps / api / js>< / script>< div id =map_1class =map>< / div>


I am using the Google Maps JavaScript API and am providing directions with alternative routes.

I would like to display the INACTIVE alternative routes in a gray color, and the current ACTIVE route in a neon green color.

How can I target the inactive and active route states and control their colors?

I've been able to change the alternative route colors using Geocodezip's example but now I need to target inactive and active states.

Here's an example of the functionality I'm going for

for (var j = 0; j < response.routes.length; j++) {
    var path = new google.maps.MVCArray();
    polyArray.push(new google.maps.Polyline({
        map: map,
        strokeColor: colors[j],
        strokeOpacity: 1.0,
        strokeWeight: 5
    }));

    polyArray[polyArray.length - 1].setPath(path);
    for (var i = 0, len = response.routes[j].overview_path.length; i < len; i++) {
        path.push(response.routes[j].overview_path[i]);
        }
    }


<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Directions service</title>
    <style>
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #map {
        height: 100%;
      }
      #floating-panel {
        position: absolute;
        top: 10px;
        left: 25%;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
        text-align: center;
        font-family: 'Roboto','sans-serif';
        line-height: 30px;
        padding-left: 10px;
      }
    </style>
  </head>
  <body>
    <div id="floating-panel">
    <b>Start: </b>
    <select id="start">
      <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">
      <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"></div>
    <script>
    
        var polyArray = [];
    var colors;

    function initMap() {
        
        polyArray = [];
        colors = ['#ff0000', '#00ff00', '#0000ff', '#ffff00', '#ff00ff', '#00ffff'];
        
        var directionsService = new google.maps.DirectionsService;
        var directionsDisplay = new google.maps.DirectionsRenderer;
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 7,
          center: {lat: 41.85, lng: -87.65}
        });
        directionsDisplay.setMap(map);

        var onChangeHandler = function() {
          calculateAndDisplayRoute(directionsService, directionsDisplay);
        };
        document.getElementById('start').addEventListener('change', onChangeHandler);
        document.getElementById('end').addEventListener('change', onChangeHandler);
      }

      function calculateAndDisplayRoute(directionsService, directionsDisplay) {
        directionsService.route({
          origin: document.getElementById('start').value,
          destination: document.getElementById('end').value,
          travelMode: 'DRIVING',
          provideRouteAlternatives: true
        }, function(response, status) {
          if (status === 'OK') {
          for (var j = 0; j < response.routes.length; j++) {
                var path = new google.maps.MVCArray();
                polyArray.push(new google.maps.Polyline({
                   map: map,
                   strokeColor: colors[j],
                   strokeOpacity: 1.0,
                   strokeWeight: 5
                }));
                polyArray[polyArray.length - 1].setPath(path);
                for (var i = 0, len = response.routes[j].overview_path.length; i < len; i++) {
                    path.push(response.routes[j].overview_path[i]);
                }
            }
            directionsDisplay.setDirections(response);
          } else {
            window.alert('Directions request failed due to ' + status);
          }
        });
      }
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?sensor=false&callback=initMap">
    </script>
  </body>
</html>

解决方案

When you "activate" a route, process through the array of polylines:

  1. set the strokeColor of all the routes to 'grey'
  2. set the active route's polyline color to the "active" color

proof of concept fiddle (based on my example which you reference, click on the polyline to "activate" it)

code snippet:

$(document).ready(function() {
  var markers = [{
    "title": '',
    "lat": '56.965969',
    "lng": '24.143496',
    "description": ''
  }, {
    "title": '',
    "lat": '56.966259',
    "lng": '24.385860',
    "description": ''
  }];
  var service = new google.maps.DirectionsService();
  var polyArray = [];
  var infoWindow = new google.maps.InfoWindow();
  var map = new google.maps.Map(document.getElementById("map_1"), mapOptions);
  var lat_lng = new Array();
  var colors = ['#ff0000', '#00ff00', '#0000ff', '#ffff00', '#ff00ff', '#00ffff'];
  var image = 'https://maps.google.com/mapfiles/ms/micons/blue.png';
  var marker = new google.maps.Marker({
    position: new google.maps.LatLng(56.966259, 24.385860),
    map: map,
    title: 'Sillava',
    icon: image
  });
  for (i = 0; i < markers.length; i++) {
    var data = markers[i];
    var myLatlng = new google.maps.LatLng(data.lat, data.lng);
    lat_lng.push(myLatlng);
  }
  for (var i = 0; i < lat_lng.length; i++) {
    if ((i + 1) < lat_lng.length) {
      var src = lat_lng[i];
      var des = lat_lng[i + 1];
      service.route({
        origin: src,
        destination: des,
        provideRouteAlternatives: true,
        travelMode: google.maps.DirectionsTravelMode.DRIVING
      }, function(result, status) {
        if (status == google.maps.DirectionsStatus.OK) {
          for (var j = 0; j < result.routes.length; j++) {
            var path = new google.maps.MVCArray();
            polyArray.push(new google.maps.Polyline({
              map: map,
              strokeColor: "grey",
              strokeOpacity: 0.3,
              strokeWeight: 5
            }));
            if (j == 0) polyArray[0].setOptions({
              strokeColor: '#00ff00',
              strokeOpacity: 1.0
            });
            polyArray[polyArray.length - 1].setPath(path);
            google.maps.event.addListener(polyArray[polyArray.length - 1], 'click', function() {
              for (var i = 0; i < polyArray.length; i++) {
                polyArray[i].setOptions({
                  strokeOpacity: 0.3,
                  strokeColor: "grey"
                });
              }
              this.setOptions({
                strokeOpacity: 1.0,
                strokeColor: "#00ff00"
              });
            })
            for (var i = 0, len = result.routes[j].overview_path.length; i < len; i++) {
              path.push(result.routes[j].overview_path[i]);
            }
          }
        }
      });
    }
  }
});
var mapOptions = {
  zoom: 11,
  center: new google.maps.LatLng(56.975749, 24.279310),
  scrollwheel: false,
  navigationControl: false,
  mapTypeControl: false,
  scaleControl: false,
  draggable: false,
  styles: [{
    "featureType": "water",
    "elementType": "geometry",
    "stylers": [{
      "color": "#d3d3d3"
    }, {
      "lightness": 17
    }]
  }, {
    "featureType": "landscape",
    "elementType": "geometry",
    "stylers": [{
      "color": "#f5f5f5"
    }, {
      "lightness": 20
    }]
  }, {
    "featureType": "road.highway",
    "elementType": "geometry.fill",
    "stylers": [{
      "color": "#ffffff"
    }, {
      "lightness": 17
    }]
  }, {
    "featureType": "road.highway",
    "elementType": "geometry.stroke",
    "stylers": [{
      "color": "#ffffff"
    }, {
      "lightness": 29
    }, {
      "weight": 0.2
    }]
  }, {
    "featureType": "road.arterial",
    "elementType": "geometry",
    "stylers": [{
      "color": "#ffffff"
    }, {
      "lightness": 18
    }]
  }, {
    "featureType": "road.local",
    "elementType": "geometry",
    "stylers": [{
      "color": "#ffffff"
    }, {
      "lightness": 16
    }]
  }, {
    "featureType": "poi",
    "elementType": "geometry",
    "stylers": [{
      "color": "#f5f5f5"
    }, {
      "lightness": 21
    }]
  }, {
    "featureType": "poi.park",
    "elementType": "geometry",
    "stylers": [{
      "color": "#dedede"
    }, {
      "lightness": 21
    }]
  }, {
    "elementType": "labels.text.stroke",
    "stylers": [{
      "visibility": "on"
    }, {
      "color": "#ffffff"
    }, {
      "lightness": 16
    }]
  }, {
    "elementType": "labels.text.fill",
    "stylers": [{
      "saturation": 36
    }, {
      "color": "#333333"
    }, {
      "lightness": 40
    }]
  }, {
    "elementType": "labels.icon",
    "stylers": [{
      "visibility": "off"
    }]
  }, {
    "featureType": "transit",
    "elementType": "geometry",
    "stylers": [{
      "color": "#f2f2f2"
    }, {
      "lightness": 19
    }]
  }, {
    "featureType": "administrative",
    "elementType": "geometry.fill",
    "stylers": [{
      "color": "#fefefe"
    }, {
      "lightness": 20
    }]
  }, {
    "featureType": "administrative",
    "elementType": "geometry.stroke",
    "stylers": [{
      "color": "#fefefe"
    }, {
      "lightness": 17
    }, {
      "weight": 1.2
    }]
  }]
};

.map {
  width: 100%;
  height: 100%;
}
body,
html {
  height: 100%;
  width: 100%;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_1" class="map"></div>

这篇关于Google Maps JavaScript API - 在一种颜色中显示INACTIVE替代路线，在另一种颜色中显示ACTIVE替代路线的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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