我正在尝试使用Google Maps API完成以下操作:
to_address
作为标记我让最后两个工作得很好。我现在遇到的问题是,如果未提供位置,则会在地图上显示to_address
作为标记。
这是我正在使用的代码。请记住,最后两个步骤按预期工作。我知道我可以用latlng完成这个,但这对我来说不是一个选择。我需要提供一个地址。
var geocoder;
var directionDisplay;
var directionsService = new google.maps.DirectionsService();
var to_pos;
var to_address = '11161 84th ave delta bc';
function initialize() {
directionsDisplay = new google.maps.DirectionsRenderer();
geocoder = new google.maps.Geocoder();
geocoder.geocode({
'address': to_address
}, function (results, status) {
if (status == google.maps.GeocoderStatus.OK) {
to_pos = results[0].geometry.location;
}
});
var myOptions = {
zoom: 7,
mapTypeId: google.maps.MapTypeId.ROADMAP,
center: to_pos
};
var map = new google.maps.Map(document.getElementById('map_canvas'), myOptions);
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById('directions'));
var control = document.getElementById('d_options');
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function (position) {
var pos = new google.maps.LatLng(position.coords.latitude, position.coords.longitude);
var infowindow = new google.maps.Marker({
position: pos,
map: map,
title: "You"
});
map.setCenter(pos);
$('#from').val(pos);
$('#d_options').trigger('collapse');
calcRoute();
}, function () {
handleNoGeolocation(true);
});
}
}
function calcRoute() {
var start = document.getElementById('from').value;
var end = to_address;
$('#results').show();
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);
}
});
}
google.maps.event.addDomListener(window, 'load', initialize);
答案 0 :(得分:0)
地理编码使用异步请求。您必须在geocode()
的回调中创建标记geocoder.geocode({
'address': to_address
}, function (results, status) {
if (status == google.maps.GeocoderStatus.OK) {
var to_pos = results[0].geometry.location;
new google.maps.Marker({
position: new google.maps.LatLng(to_pos.lat(),to_pos.lng()),
map: map,
title: "Destination"
});
}
});