0
所以,伙计们,你能帮助我吗?即时通讯这个谷歌地图api的东西新手。 我想在2点之间建立一条路线。点1是我们当前的位置,点2取自数据库。这是我的代码。这两个点可以显示,但我的代码didnt的路线工作如何显示谷歌地图API中两点之间的路线?点A是当前位置,点B取自数据库
<script>
// Note: This example requires that you consent to location sharing when
// prompted by your browser. If you see the error "The Geolocation service
// failed.", it means you probably did not give permission for the browser to
// locate you.
var directionsDisplay;
var directionsService = new google.maps.DirectionsService();
function initMap() {
\t directionsDisplay = new google.maps.DirectionsRenderer();
var myLatlng = new google.maps.LatLng(<?php echo $lat ?>,<?php echo $long ?>);
var mapOptions = {
zoom: 13,
center: myLatlng
};
var map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
directionsDisplay.setMap(map);
var marker = new google.maps.Marker({
position: myLatlng,
title:"Hello World!"
});
// To add the marker to the map, call setMap();
marker.setMap(map);
var infoWindow = new google.maps.InfoWindow({map: map});
// Try HTML5 geolocation.
if (navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var pos = {
lat: position.coords.latitude,
lng: position.coords.longitude
};
infoWindow.setPosition(pos);
infoWindow.setContent('You are here');
}, function() {
handleLocationError(true, infoWindow, map.getCenter());
});
} else {
// Browser doesn't support Geolocation
handleLocationError(false, infoWindow, map.getCenter());
}
function handleLocationError(browserHasGeolocation, infoWindow, pos) {
infoWindow.setPosition(pos);
infoWindow.setContent(browserHasGeolocation ?
'Error: The Geolocation service failed.' :
'Error: Your browser doesn\'t support geolocation.');
}
// get route from A to B
calculateAndDisplayRoute(directionsService, directionsDisplay, infoWindow, marker);
}
function calculateAndDisplayRoute(directionsService, directionsDisplay, infoWindow, marker) {
directionsService.route({
origin: infoWindow,
destination: marker,
avoidTolls: true,
avoidHighways: false,
travelMode: google.maps.TravelMode.DRIVING
}, function (response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
} else {
window.alert('Directions request failed due to ' + status);
}
});
}
initMap();
</script>