可以对DirectionsRendererOptions Google Maps API进行抑制标记和拖动 [英] suppressMarkers and draggable for DirectionsRendererOptions Google Maps API

问题描述

我正在使用Google Maps API创建具有给定点的方向.

我需要将点定为1,2,3 ... 99(完成).

这些点也必须是可拖动的.

但是当我使这些点可拖动时，方向不会自动刷新，点的位置会改变，但方向不会改变，

以下是示例代码(摘自->

这是问题所在

问题是，我必须同时使用标记和可拖动属性.

预先感谢

解决方案

每次拖动标记时，只需重新计算路线即可.侦听 dragend 事件，并再次计算路线，然后再次使用抑制标记将其呈现在地图上.不过请小心，如果将标记拖到无法计算路线的某个位置(例如，在海上或某些山脉等)，则在重新计算路线时会出错.

工作示例:

  function init(){var markers = [];vardirectionService =新的google.maps.DirectionsService();var pos = new google.maps.LatLng(41.218624，-73.748358);var myOptions = {变焦:15中心:pos，mapTypeId:google.maps.MapTypeId.ROADMAP};map = new google.maps.Map(document.getElementById('map')，myOptions);directionsDisplay = new google.maps.DirectionsRenderer({map:map，preventMarkers:true});directionsService.route({来源:纽约"，目的地:芝加哥"，航点:[{location:"Philadelphia"}，{location:"Boston"}]，//其他持续时间点optimizeWaypoints:正确，travelMode:google.maps.TravelMode.DRIVING}，功能(响应，状态){如果(状态=== google.maps.DirectionsStatus.OK){directionsDisplay.setDirections(response);var my_route = response.routes [0];for(var i = 0; i< my_route.legs.length; i ++){addDraggableDirectionsMarker(my_route.legs [i] .start_location，i + 1，地图，标记，directionsService，directionsDisplay)；}addDraggableDirectionsMarker(my_route.legs [i-1] .end_location，i + 1，地图，标记，directionsService，directionsDisplay)；} 别的 {vts.alertDialog(window.localization.error，window.localization.error_direction_calculate +:" +状态，BootstrapDialog.TYPE_DANGER);}});}函数addDraggableDirectionsMarker(位置，标签，地图，标记，directionsService，directionsDisplay){var marker = new google.maps.Marker({位置:位置，标签:" +标签，地图:可拖动:true});google.maps.event.addListener(marker，'click'，function(){//做任何您想在标记上单击的操作});google.maps.event.addListener(marker，'dragend'，function(){if(markers.length< 2)返回;var waypoints = [];for(var i = 1; i< markers.length-1; i ++)waypoints.push({location:markers [i] .getPosition()});directionsService.route({来源:markers [0] .getPosition()，目的地:markers [markers.length-1] .getPosition()，航点:航点，optimizeWaypoints:正确，travelMode:google.maps.TravelMode.DRIVING}，功能(响应，状态){如果(状态=== google.maps.DirectionsStatus.OK){directionsDisplay.setDirections(response);//取消注释以下代码，如果希望拖动的标记捕捉到路线，最接近拖动标记的点/* var my_route = response.routes [0];for(var i = 0; i< my_route.legs.length; i ++){markers [i] .setPosition(my_route.legs [i] .start_location);}标记[i] .setPosition(my_route.legs [i-1] .end_location); */} 别的 {vts.alertDialog(window.localization.error，window.localization.error_direction_calculate +:" +状态，BootstrapDialog.TYPE_DANGER);}});});markers.push(marker);}  

 <脚本类型="text/javascript" src ="http://www.google.com/jsapi"></script>< script type ="text/javascript">google.load("maps"，"3"，{other_params:"sensor = false"});</script>< body style ="margin:0px; padding:0px;"onload ="init()">< div id ="map" style ="height:400px; width:500px;"></div></body>  

I'm using Google Maps API to create a direction with the given points.

I need to order the points as 1,2,3...99 (It's done).

Also the points must be draggable.

But when I make the points draggable, the direction does not refresh itself, point's locations change but not the direction,

Here is the sample code(taken from the --> Google Maps Directions using 1-2-3 instead of A-B-C);

<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
  google.load("maps", "3",{other_params:"sensor=false"});

  function init(){
    directionsService = new google.maps.DirectionsService();

    var pos = new google.maps.LatLng(41.218624, -73.748358);
    var myOptions = {
        zoom: 15,
        center: pos,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };

    map = new google.maps.Map(document.getElementById('map'), myOptions);
    directionsDisplay = new google.maps.DirectionsRenderer({map: map, suppressMarkers: true,draggable:true});

    directionsService.route({
        origin: "New York",
        destination: "Chicago",
        waypoints: [{location:"Philadelphia"}, {location:"Boston"}], //other duration points
        optimizeWaypoints: true,
        travelMode: google.maps.TravelMode.DRIVING
    }, function(response, status) {
        if (status === google.maps.DirectionsStatus.OK) {
            directionsDisplay.setDirections(response);
            var my_route = response.routes[0];
            for (var i = 0; i < my_route.legs.length; i++) {
                var marker = new google.maps.Marker({
                    position: my_route.legs[i].start_location,
                    draggable:true,
                    label: ""+(i+1),
                    map: map
                });
            }
            var marker = new google.maps.Marker({
                position: my_route.legs[i-1].end_location,
                draggable:true,
                label: ""+(i+1),
                map: map
            });
        } else {
            vts.alertDialog( window.localization.error,
                window.localization.error_direction_calculate + ": " + status,
                BootstrapDialog.TYPE_DANGER);
        }
    });

}    
</script>
<body style="margin:0px; padding:0px;" onload="init()">
     <div id="map" style="height:400px; width:500px;"></div>
</body>

Here is the screen shots;

Here is the problem;

The thing is that, I have to do it with both markers and draggable properties.

Thanks in advance

解决方案

Just recalculate the route every time a marker is dragged. Listen for the dragend event and calculate route again and then render it on map, again with suppressing markers. Careful though, if you drag a marker to some position where route cannot be calculated (e.g. over sea, or some mountains, etc.) you would get error when re-calculating the route.

Working example:

function init(){
    var markers = [];
    var directionsService = new google.maps.DirectionsService();
    var pos = new google.maps.LatLng(41.218624, -73.748358);
    var myOptions = {
        zoom: 15,
        center: pos,
        mapTypeId: google.maps.MapTypeId.ROADMAP
    };

    map = new google.maps.Map(document.getElementById('map'), myOptions);
    directionsDisplay = new google.maps.DirectionsRenderer({map: map, suppressMarkers: true});

    directionsService.route({
        origin: "New York",
        destination: "Chicago",
        waypoints: [{location:"Philadelphia"}, {location:"Boston"}], //other duration points
        optimizeWaypoints: true,
        travelMode: google.maps.TravelMode.DRIVING
    }, function(response, status) {
        if (status === google.maps.DirectionsStatus.OK) {
            directionsDisplay.setDirections(response);
			var my_route = response.routes[0];
            for (var i = 0; i < my_route.legs.length; i++) {
                addDraggableDirectionsMarker(my_route.legs[i].start_location, i+1, map, markers, directionsService, directionsDisplay);
            }
			addDraggableDirectionsMarker(my_route.legs[i-1].end_location, i+1, map, markers, directionsService, directionsDisplay);
        } else {
            vts.alertDialog( window.localization.error,
                window.localization.error_direction_calculate + ": " + status,
                BootstrapDialog.TYPE_DANGER);
        }
    });

}    

function addDraggableDirectionsMarker(position, label, map, markers, directionsService, directionsDisplay){
    var marker = new google.maps.Marker({
        position: position,
        label: "" + label,
        map: map,
		draggable: true
    });
    google.maps.event.addListener(marker, 'click', function(){
        //do whatever you want on marker click
    }); 
	google.maps.event.addListener(marker, 'dragend', function(){
		if(markers.length < 2) return;
		var waypoints = [];
		for(var i = 1; i < markers.length - 1; i++) waypoints.push({location:markers[i].getPosition()});
	    directionsService.route({
	        origin: markers[0].getPosition(),
	        destination: markers[markers.length-1].getPosition(),
	        waypoints: waypoints,
	        optimizeWaypoints: true,
	        travelMode: google.maps.TravelMode.DRIVING
	    }, function(response, status) {
	        if (status === google.maps.DirectionsStatus.OK) {
	            directionsDisplay.setDirections(response);
                    //uncomment following code if you want the markers you dragged to snap to the route, closest to the point where you dragged the marker
                    /*var my_route = response.routes[0];
            for (var i = 0; i < my_route.legs.length; i++) {
	           markers[i].setPosition(my_route.legs[i].start_location);
            }
            markers[i].setPosition(my_route.legs[i-1].end_location);*/
	        } else {
	            vts.alertDialog( window.localization.error,
	                window.localization.error_direction_calculate + ": " + status,
	                BootstrapDialog.TYPE_DANGER);
	        }
		});
	});
	markers.push(marker);
}

<script type="text/javascript" src="http://www.google.com/jsapi"></script>
<script type="text/javascript">
google.load("maps", "3",{other_params:"sensor=false"});
</script>
<body style="margin:0px; padding:0px;" onload="init()">
	 <div id="map" style="height:400px; width:500px;"></div>
</body>

这篇关于可以对DirectionsRendererOptions Google Maps API进行抑制标记和拖动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！