Google Maps V3 setDirections（）回调

执行setDirections（）时是否有可能获得回调？

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&libraries=places&language=">  $(document).ready(function(){ var destination = ''; var directionsDisplay = new google.maps.DirectionsRenderer({ draggable: true }); var directionsService = new google.maps.DirectionsService(); var geocoder; var infoWindowContent = '
infocontent
'; var map; var marker; var position = new google.maps.LatLng(46.80193957664, 11.41754150390625); function calcRoute(start, end) { var request = { origin: start, destination: end, travelMode: google.maps.DirectionsTravelMode.DRIVING }; directionsService.route(request, function(response, status) { if(status == google.maps.DirectionsStatus.OK) { directionsDisplay.setDirections(response); } }); } function codeAddress(address) { if(geocoder) { geocoder.geocode({ 'address': address }, function(results, status) { if(status == google.maps.GeocoderStatus.OK) { calcRoute(results[0].geometry.location, position); document.getElementById('gmap_input').value = address; } }); } } function initialize() { if(destination) geocoder = new google.maps.Geocoder(); map = new google.maps.Map(document.getElementById('gmap_map'), { center: new google.maps.LatLng(46.80193957664, 11.41754150390625), zoom: 9, mapTypeId: google.maps.MapTypeId.TERRAIN }); directionsDisplay.setMap(map); directionsDisplay.setPanel(document.getElementById("gmap_directions")); var autocomplete = new google.maps.places.Autocomplete(document.getElementById('gmap_input')); autocomplete.bindTo('bounds', map); var infowindow = new google.maps.InfoWindow({ maxWidth: 240 }); var marker = new google.maps.Marker({ position: position, map: map, title:"Title" }); infowindow.setContent(infoWindowContent); infowindow.open(map, marker); if(destination) codeAddress(destination); google.maps.event.addListener(marker, 'click', function() { infowindow.open(map, marker); }); google.maps.event.addListener(autocomplete, 'place_changed', function() { var place = autocomplete.getPlace(); if (place.geometry.viewport) { map.fitBounds(place.geometry.viewport); } else { map.setCenter(place.geometry.location); } calcRoute(place.geometry.location, position); }); google.maps.event.addListener(directionsDisplay, 'directions_changed', function() { $('#article').mCustomScrollbar('vertical', 350, 'easeOutCirc', 1.05, 'auto', 'yes', 'no', false); }); } google.maps.event.addDomListener(window, 'load', initialize); $('#gmap_map').css('height', '310px'); $('#article form').submit(function(event){ event.preventDefault(); }); });  

Answer 1

您可以将directions_changed的EventListener绑定到directionsDisplay：

 var directionsService = new google.maps.DirectionsService(); var directionsDisplay = new google.maps.DirectionsRenderer({ 'map': map }); //... var request = { origin : ..., destination: ..., travelMode : google.maps.DirectionsTravelMode.WALKING }; directionsService.route(request, function(response, status) { if (status == google.maps.DirectionsStatus.OK) { directionsDisplay.setDirections(response); } }); // ... google.maps.event.addListener(directionsDisplay, 'directions_changed', function() { // ... CALLBACK }); 

那你在那之后呢？