无法在Google Maps API中的标记之间绘制路线
Shiladitya Biswas
我是Web开发的新手。在上面的html文件中，我正在调用google maps api并放置标记。我的目标是使标记之间的路径最短。有了这个html文件，我在google地图上清楚地标记了所需的点，但是没有它们之间的路径。请帮忙。
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<title>Reverse Geocoding</title>
<style>
/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}
#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;
}
#floating-panel {
position: absolute;
top: 5px;
left: 50%;
margin-left: -180px;
width: 350px;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
}
#latlng {
width: 225px;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
var map;
var geocoder;
function initMap() {
var directionsService = new google.maps.DirectionsService;
var directionsDisplay = new google.maps.DirectionsRenderer;
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 8,
center: {lat: -33.931, lng: 151.257},
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var marker, i;
var locations = [
['Manly Beach', -32.80010128657071, 151.28747820854187, 2],
['Bondi Beach', -33.890542, 151.274856, 4],
['Coogee Beach', -33.923036, 151.259052, 5],
['Maroubra Beach', -33.950198, 151.259302, 1],
['Cronulla Beach', -34.028249, 151.157507, 3],
['Canly Beach', -33.90010128657071, 151.28747820854187, 6],
['Pukuni', -32.90010128657071, 151.28747820854187, 7],
['Chulkuni Beach', -31.90010128657071, 151.28747820854187, 8],
['Narumi', -30.90010128657071, 151.28747820854187, 9],
];
var request = {
travelMode: google.maps.TravelMode.DRIVING
};
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map
});
//Shows marker names and related content
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
if (i == 0) request.origin = marker.getPosition();
else if (i == locations.length - 1) request.destination = marker.getPosition();
else {
if (!request.waypoints) request.waypoints = [];
request.waypoints.push({
location: marker.getPosition(),
stopover: true,
});
}
}
directionsService.route(request, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(result);
}
});
}
google.maps.event.addDomListener(window, "load", initialize);
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=xxxx&callback=initMap">
</script>
</body>
</html>
我专门删除了密钥。
地理编码
您没有设置的map属性DirectionsRenderer。
加：
directionsDisplay.setMap(map);
后map创建。
代码段：
var map;
var geocoder;
function initMap() {
var directionsService = new google.maps.DirectionsService();
var directionsDisplay = new google.maps.DirectionsRenderer();
var infowindow = new google.maps.InfoWindow();
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 8,
center: {
lat: -33.931,
lng: 151.257
},
mapTypeId: google.maps.MapTypeId.ROADMAP
});
directionsDisplay.setMap(map); // <=================== add this line
var marker, i;
var locations = [
['Manly Beach', -32.80010128657071, 151.28747820854187, 2],
['Bondi Beach', -33.890542, 151.274856, 4],
['Coogee Beach', -33.923036, 151.259052, 5],
['Maroubra Beach', -33.950198, 151.259302, 1],
['Cronulla Beach', -34.028249, 151.157507, 3],
['Canly Beach', -33.90010128657071, 151.28747820854187, 6],
['Pukuni', -32.90010128657071, 151.28747820854187, 7],
['Chulkuni Beach', -31.90010128657071, 151.28747820854187, 8],
['Narumi', -30.90010128657071, 151.28747820854187, 9],
];
var request = {
travelMode: google.maps.TravelMode.DRIVING
};
for (i = 0; i < locations.length; i++) {
marker = new google.maps.Marker({
position: new google.maps.LatLng(locations[i][1], locations[i][2]),
map: map
});
//Shows marker names and related content
google.maps.event.addListener(marker, 'click', (function(marker, i) {
return function() {
infowindow.setContent(locations[i][0]);
infowindow.open(map, marker);
}
})(marker, i));
if (i == 0) request.origin = marker.getPosition();
else if (i == locations.length - 1) request.destination = marker.getPosition();
else {
if (!request.waypoints) request.waypoints = [];
request.waypoints.push({
location: marker.getPosition(),
stopover: true,
});
}
}
directionsService.route(request, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(result);
}
});
}#map {
height: 100%;
}
html,
body {
height: 100%;
margin: 0;
padding: 0;
}
#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;
}
#floating-panel {
position: absolute;
top: 5px;
left: 50%;
margin-left: -180px;
width: 350px;
z-index: 5;
background-color: #fff;
padding: 5px;
border: 1px solid #999;
}
#latlng {
width: 225px;
}<script async defer src="https://maps.googleapis.com/maps/api/js?callback=initMap"></script>
<div id="map"></div>本文收集自互联网，转载请注明来源。
如有侵权，请联系 [email protected] 删除。
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