我正在使用Google Maps V3路线服务绘制从源到目的地的简单路线。
我需要添加路线必须通过的一些位置（中点或航路点）。 Google地图为此提供了航点。
我已经提到他们的documentation和示例来添加航点。但是当我尝试通过添加航路点绘制路线时，路线仅显示在路径点阵列中添加的最后位置到目的地。我希望路线从 src 显示到目的地，并在路线中包含航点。
我附上了我的代码。我哪里错了？
var map;
var wyPts = [];
function addWayPoints(location)
{
wyPts.push({
location:location,
stopover:true
});
}
function createInfoWindowContent(latLng, contentStr) {
var content = '<p><b>' + contentStr + ' </b> </p>' + 'LatLng: ' + latLng ;
return content;
}
function displayRoute(origin, destination, service, display) {
service.route({
origin : origin,
destination : destination,
//waypoints: [{location: new google.maps.LatLng(30.439025, -97.685654)}, {location: new google.maps.LatLng(30.434882, -97.677015)} , {location:new google.maps.LatLng(30.429495, -97.675274)}],
waypoints:wyPts,
optimizeWaypoints: true,
travelMode : google.maps.DirectionsTravelMode.DRIVING
}, function(response, status) {
if (status === google.maps.DirectionsStatus.OK) {
display.setDirections(response);
} else {
alert('Could not display directions due to: ' + status);
}
});
}
function initMap() {
//////////source destination and middle waypoints
var src = new google.maps.LatLng(30.444719, -97.686202); // //school
//addWayPoints(src);
var midPt1 = new google.maps.LatLng(30.439025, -97.685654); //
addWayPoints(midPt1);
var midPt2 = new google.maps.LatLng(30.434882, -97.677015); //
addWayPoints(midPt2);
var midPt3 = new google.maps.LatLng(30.429495, -97.675274); //
addWayPoints(midPt3);
/* for (var i = 0; i < wyPts.length; i++) {
alert("pts are : " + wyPts[i].location);
} */
var destination = new google.maps.LatLng(30.401820, -97.669545); //
///////////draw the map
map = new google.maps.Map(document.getElementById('map'), {
center : src,
mapTypeControlOptions : {
style : google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
position : google.maps.ControlPosition.TOP_RIGHT,
mapTypeIds : [ google.maps.MapTypeId.ROADMAP,
google.maps.MapTypeId.TERRAIN,
google.maps.MapTypeId.HYBRID ]
},
zoomControl : true,
zoomControlOptions : {
position : google.maps.ControlPosition.RIGHT_CENTER
},
zoom : 14
});
//draw infowindow at src and destination
var coordInfoWindowSrc = new google.maps.InfoWindow({
content: createInfoWindowContent(src , "Source"),
maxWidth : 180
});
coordInfoWindowSrc.setPosition(src);
coordInfoWindowSrc.open(map);
var coordInfoWindowDest = new google.maps.InfoWindow({
content: createInfoWindowContent(destination , "Destination"),
maxWidth : 180
});
coordInfoWindowDest.setPosition(destination);
coordInfoWindowDest.open(map);
//display route
var polylineProps = new google.maps.Polyline({
strokeColor : '#009933',
strokeOpacity : 1.0,
strokeWeight : 3
});
var directionsDisplay = new google.maps.DirectionsRenderer({
draggable : false, //do not make the route draggable
map : map,
suppressMarkers: true ,
polylineOptions : polylineProps
});
var directionsService = new google.maps.DirectionsService();
displayRoute(src, destination, directionsService,directionsDisplay);
//add listener to map
directionsDisplay.addListener(
'change',
function() {
displayRoute(src, destination, directionsService,
directionsDisplay);
});
}
提前致谢。
答案 0 :(得分：6)
polylineOptions匿名对象不是（也不应该是）google.maps.Polyline。
var polylineProps = new google.maps.Polyline({
strokeColor : '#009933',
strokeOpacity : 1.0,
strokeWeight : 3
});
应该是：
var polylineProps = {
strokeColor : '#009933',
strokeOpacity : 1.0,
strokeWeight : 3
};
如果我解决了这个问题，那么整条路线都会显示该行：
代码段
var map;
var wyPts = [];
function addWayPoints(location) {
wyPts.push({
location: location,
stopover: true
});
}
function createInfoWindowContent(latLng, contentStr) {
var content = '<p><b>' + contentStr + ' </b> </p>' + 'LatLng: ' + latLng;
return content;
}
function displayRoute(origin, destination, service, display) {
service.route({
origin: origin,
destination: destination,
//waypoints: [{location: new google.maps.LatLng(30.439025, -97.685654)}, {location: new google.maps.LatLng(30.434882, -97.677015)} , {location:new google.maps.LatLng(30.429495, -97.675274)}],
waypoints: wyPts,
optimizeWaypoints: true,
travelMode: google.maps.DirectionsTravelMode.DRIVING
}, function(response, status) {
if (status === google.maps.DirectionsStatus.OK) {
display.setDirections(response);
} else {
alert('Could not display directions due to: ' + status);
}
});
}
function initMap() {
//////////source destination and middle waypoints
var src = new google.maps.LatLng(30.444719, -97.686202); // //school
//addWayPoints(src);
var midPt1 = new google.maps.LatLng(30.439025, -97.685654); //
addWayPoints(midPt1);
var midPt2 = new google.maps.LatLng(30.434882, -97.677015); //
addWayPoints(midPt2);
var midPt3 = new google.maps.LatLng(30.429495, -97.675274); //
addWayPoints(midPt3);
/* for (var i = 0; i < wyPts.length; i++) {
alert("pts are : " + wyPts[i].location);
} */
var destination = new google.maps.LatLng(30.401820, -97.669545); //
///////////draw the map
map = new google.maps.Map(document.getElementById('map'), {
center: src,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
position: google.maps.ControlPosition.TOP_RIGHT,
mapTypeIds: [google.maps.MapTypeId.ROADMAP,
google.maps.MapTypeId.TERRAIN,
google.maps.MapTypeId.HYBRID
]
},
zoomControl: true,
zoomControlOptions: {
position: google.maps.ControlPosition.RIGHT_CENTER
},
zoom: 14
});
//draw infowindow at src and destination
var coordInfoWindowSrc = new google.maps.InfoWindow({
content: createInfoWindowContent(src, "Source"),
maxWidth: 180
});
coordInfoWindowSrc.setPosition(src);
coordInfoWindowSrc.open(map);
var coordInfoWindowDest = new google.maps.InfoWindow({
content: createInfoWindowContent(destination, "Destination"),
maxWidth: 180
});
coordInfoWindowDest.setPosition(destination);
coordInfoWindowDest.open(map);
//display route
var polylineProps = {
strokeColor: '#009933',
strokeOpacity: 1.0,
strokeWeight: 3
};
var directionsDisplay = new google.maps.DirectionsRenderer({
draggable: false, //do not make the route draggable
map: map,
suppressMarkers: true,
polylineOptions: polylineProps
});
var directionsService = new google.maps.DirectionsService();
displayRoute(src, destination, directionsService, directionsDisplay);
//add listener to map
directionsDisplay.addListener(
'change',
function() {
displayRoute(src, destination, directionsService,
directionsDisplay);
});
}
google.maps.event.addDomListener(window, 'load', initMap);html,
body,
#map {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map"></div>