Question

我已经构建了一个网络应用程序，它使用google maps v3 API构建一个方向多个航点的地图。

 jQuery.getJSON(driverURL, function(dData){
       var routeObject = {};
       var lat = dData.Location.lat;
       var lng = dData.Location.lng;
       routeObject.origin = new google.maps.LatLng(lat, lng);
       routeObject.destination = new google.maps.LatLng(endRoute.lat, endRoute.lng);
       routeObject.waypoints = waypoints;
       routeObject.travelMode = google.maps.TravelMode.DRIVING;
       routeObject.optimizeWaypoints = true;
       directionsService.route(routeObject, function(response, status) {
            if (status === google.maps.DirectionsStatus.OK) {
                 var directionsDisplay = new google.maps.DirectionsRenderer({
                       polylineOptions: {
                            strokeColor: colors[driverLines.length]
                       }
                 });
                 directionsDisplay.setMap(dMap);
                 directionsDisplay.setDirections(response);
            } else {
                 window.alert('Directions request failed due to ' + status);
            }
       });
  });

我已经存储了地图，航路点，起点和终点，但我希望能够生成一个谷歌地图可点击链接，指向我可以发送给用户的此路线的路线。我可以找到如何使用单个标记发送链接，但不知道如何使用完整的路径方向生成地图链接。

任何帮助表示感谢。

Answer 1

我想出来了，它实际上比我想象的要容易，但还是做了一些。

首先，我将一些路点作为地址，而不是lat / lng点，并在maps.google.com上构建路线图。然后我查看了该地图的URL是如何构建的。重新创建非常简单。

网址只是http://maps.google.com/dir/starting地址，地址，城市，州，邮编/航点作为地址，城市，州，邮编/航点/结束地址作为地址，城市，州，邮编和您的地址完成。如果您为起点，航点，终点位置使用lat / lng坐标，则必须先使用V3 api对它们进行地理编码，然后从返回的结果中提取地址信息并将其插入到您的URL中，但它确实有效。

这里是我如何制作一个有一个开始，一堆航路点和一个结束位置的最终链接。我从一个名为Data的JSON对象开始，该对象包含所有地址信息，并以Google Maps期望的格式构建一个长字符串：

var dirs = ''
for(var x = 0; x<Data.length;x++){
    dirs += Data[x].Address + "," + Data[x].City + "," + Data[x].State + "," + Data[x].Zip + "/";
}

然后，我将开始和结束位置添加到它：

var dirLink = 'http://maps.google.com/maps/dir/';
dirLink += start.Address + "," + start.City + "," + start.State + "," + start.Zip + "/" + dirs + end.Address + "," + end.City + "," + end.State + "," + end.Zip;

dirLink将是一个完整的链接，它将从start.Address到所有航点指向end.Address。

Answer 2

不要忘了在脚本中：

function initMap() {
    var pointA = new google.maps.LatLng(51.7519, -1.2578),
        pointB = new google.maps.LatLng(51.509865, -0.118092),
        pointC = new google.maps.LatLng(50.8429, -0.1313),
        myOptions = {
            zoom: 7,
            center: pointA
        },
        map = new google.maps.Map(document.getElementById('map-canvas'), myOptions),
        // Instantiate a directions service.
        directionsService = new google.maps.DirectionsService,
        directionsDisplay = new google.maps.DirectionsRenderer({
            map: map
        }),
        markerA = new google.maps.Marker({
            position: pointA,
            title: "point A",
            label: "A",
            map: map
        }),
        markerB = new google.maps.Marker({
            position: pointB,
            title: "point B",
            label: "B",
            map: map
        }),
        markerC = new google.maps.Marker({
            position: pointC,
            title: "point C",
            label: "C",
            map: map
        });

    // get route from A to B
    calculateAndDisplayRoute(directionsService, directionsDisplay, pointA, pointB, pointC);

}


function calculateAndDisplayRoute(directionsService, directionsDisplay, pointA, pointB, pointC) {
    var first = new google.maps.LatLng(51.509865, -0.118092); //we can get them from params.
    var request = {
        origin: pointA,
        destination: pointC,
        waypoints: [{location: first, stopover: false}
          ], //here array of waypoints
        optimizeWaypoints: true,
        travelMode: google.maps.DirectionsTravelMode.WALKING
    };
    directionsService.route(request, function (response, status) {
        if (status == google.maps.DirectionsStatus.OK) {
            directionsDisplay.setDirections(response);
            var route = response.routes[0];
            var summaryPanel = document.getElementById("directions_panel");
            summaryPanel.innerHTML = "";
            // For each route, display summary information.
            for (var i = 0; i < route.legs.length; i++) {
                var routeSegment = i + 1;
                summaryPanel.innerHTML += "<b>Route Segment: " + routeSegment + "</b><br />";
                summaryPanel.innerHTML += route.legs[i].start_address + " to ";
                summaryPanel.innerHTML += route.legs[i].end_address + "<br />";
                summaryPanel.innerHTML += route.legs[i].distance.text + "<br /><br />";
            }
        } else {
            alert("directions response " + status);
        }
    });     
}
initMap();

使用多个航点从API地图创建Google地图链接

2 个答案: