Di seguito puoi trovare un esempio di base sull'utilizzo del servizio di indicazioni stradali di Google Maps in una pagina jQuery Mobile.
<!DOCTYPE html>
<html>
<head>
<title>jQuery mobile with Google maps geo directions example</title>
<meta content="en" http-equiv="content-language">
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />
<script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
<script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3&sensor=false&language=en"></script>
<script type="text/javascript">
$(document).on("pageinit", "#map_page", function() {
initialize();
});
$(document).on('click', '#submit', function(e) {
e.preventDefault();
calculateRoute();
});
var directionDisplay,
directionsService = new google.maps.DirectionsService(),
map;
function initialize()
{
directionsDisplay = new google.maps.DirectionsRenderer();
var mapCenter = new google.maps.LatLng(59.3426606750, 18.0736160278);
var myOptions = {
zoom:10,
mapTypeId: google.maps.MapTypeId.ROADMAP,
center: mapCenter
}
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
directionsDisplay.setMap(map);
directionsDisplay.setPanel(document.getElementById("directions"));
}
function calculateRoute()
{
var selectedMode = $("#mode").val(),
start = $("#from").val(),
end = $("#to").val();
if(start == '' || end == '')
{
// cannot calculate route
$("#results").hide();
return;
}
else
{
var request = {
origin:start,
destination:end,
travelMode: google.maps.DirectionsTravelMode[selectedMode]
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(response);
$("#results").show();
/*
var myRoute = response.routes[0].legs[0];
for (var i = 0; i < myRoute.steps.length; i++) {
alert(myRoute.steps[i].instructions);
}
*/
}
else {
$("#results").hide();
}
});
}
}
</script>
</head>
<body>
<div data-role="page" id="map_page">
<div data-role="header">
<h1><a href="#">jQuery mobile - Google maps directions service</h1>
</div>
<div data-role="content">
<div class="ui-bar-c ui-corner-all ui-shadow" style="padding:1em;">
<div id="map_canvas" style="height:300px;"></div>
<div data-role="fieldcontain">
<label for="from">From</label>
<input type="text" id="from" value="Goteborg, Sweden"/>
</div>
<div data-role="fieldcontain">
<label for="to">To</label>
<input type="text" id="to" value="Stockholm, Sweden"/>
</div>
<div data-role="fieldcontain">
<label for="mode" class="select">Transportation method:</label>
<select name="select-choice-0" id="mode">
<option value="DRIVING">Driving</option>
<option value="WALKING">Walking</option>
<option value="BICYCLING">Bicycling</option>
</select>
</div>
<a data-icon="search" data-role="button" href="#" id="submit">Get directions</a>
</div>
<div id="results" style="display:none;">
<div id="directions"></div>
</div>
</div>
</div>
</body>
</html>
UPDATE 1:
Il sotto esempio impiega la posizione attuale che si trova automaticamente e un indirizzo di destinazione di destinazione che è dato dall'utente.
<!doctype html>
<html lang="en">
<head>
<title>jQuery mobile with Google maps</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />
<script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
<script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3&sensor=false&language=en"></script>
<script type="text/javascript">
var map,
currentPosition,
directionsDisplay,
directionsService;
function initialize(lat, lon)
{
directionsDisplay = new google.maps.DirectionsRenderer();
directionsService = new google.maps.DirectionsService();
currentPosition = new google.maps.LatLng(lat, lon);
map = new google.maps.Map(document.getElementById('map_canvas'), {
zoom: 15,
center: currentPosition,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
directionsDisplay.setMap(map);
var currentPositionMarker = new google.maps.Marker({
position: currentPosition,
map: map,
title: "Current position"
});
var infowindow = new google.maps.InfoWindow();
google.maps.event.addListener(currentPositionMarker, 'click', function() {
infowindow.setContent("Current position: latitude: " + lat +" longitude: " + lon);
infowindow.open(map, currentPositionMarker);
});
}
function locError(error) {
// initialize map with a static predefined latitude, longitude
initialize(59.3426606750, 18.0736160278);
}
function locSuccess(position) {
initialize(position.coords.latitude, position.coords.longitude);
}
function calculateRoute() {
var targetDestination = $("#target-dest").val();
if (currentPosition && currentPosition != '' && targetDestination && targetDestination != '') {
var request = {
origin:currentPosition,
destination:targetDestination,
travelMode: google.maps.DirectionsTravelMode["DRIVING"]
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setPanel(document.getElementById("directions"));
directionsDisplay.setDirections(response);
/*
var myRoute = response.routes[0].legs[0];
for (var i = 0; i < myRoute.steps.length; i++) {
alert(myRoute.steps[i].instructions);
}
*/
$("#results").show();
}
else {
$("#results").hide();
}
});
}
else {
$("#results").hide();
}
}
$(document).live("pagebeforeshow", "#map_page", function() {
navigator.geolocation.getCurrentPosition(locSuccess, locError);
});
$(document).on('click', '#directions-button', function(e){
e.preventDefault();
calculateRoute();
});
</script>
</head>
<body>
<div id="basic-map" data-role="page">
<div data-role="header">
<h1><a data-ajax="false" href="/">jQuery mobile with Google maps v3</a></h1>
</div>
<div data-role="content">
<div class="ui-bar-c ui-corner-all ui-shadow" style="padding:1em;">
<div id="map_canvas" style="height:350px;"></div>
</div>
<div data-role="fieldcontain">
<label for="target-dest">Target Destination:</label>
<input type="text" name="target-dest" id="target-dest" value="" />
</div>
<a href="#" id="directions-button" data-role="button" data-inline="true" data-mini="true">Get Directions</a>
<div id="results" style="display:none;">
<div id="directions"></div>
</div>
</div>
</div>
</body>
</html>
UPDATE 2:
Il sotto esempio localizza la posizione corrente e calcola automaticamente la distanza e visualizza i dettagli del percorso tra la posizione corrente e una posizione di destinazione predefinita statico.
<!doctype html>
<html lang="en">
<head>
<title>jQuery mobile with Google maps</title>
<link rel="stylesheet" href="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.css" />
<script src="http://code.jquery.com/jquery-1.8.2.min.js"></script>
<script src="http://code.jquery.com/mobile/1.2.0/jquery.mobile-1.2.0.min.js"></script>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3&sensor=false&language=en"></script>
<script type="text/javascript">
var map,
currentPosition,
directionsDisplay,
directionsService,
destinationLatitude = 59.3426606750,
destinationLongitude = 18.0736160278;
function initializeMapAndCalculateRoute(lat, lon)
{
directionsDisplay = new google.maps.DirectionsRenderer();
directionsService = new google.maps.DirectionsService();
currentPosition = new google.maps.LatLng(lat, lon);
map = new google.maps.Map(document.getElementById('map_canvas'), {
zoom: 15,
center: currentPosition,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
directionsDisplay.setMap(map);
var currentPositionMarker = new google.maps.Marker({
position: currentPosition,
map: map,
title: "Current position"
});
// current position marker info
/*
var infowindow = new google.maps.InfoWindow();
google.maps.event.addListener(currentPositionMarker, 'click', function() {
infowindow.setContent("Current position: latitude: " + lat +" longitude: " + lon);
infowindow.open(map, currentPositionMarker);
});
*/
// calculate Route
calculateRoute();
}
function locError(error) {
// the current position could not be located
}
function locSuccess(position) {
// initialize map with current position and calculate the route
initializeMapAndCalculateRoute(position.coords.latitude, position.coords.longitude);
}
function calculateRoute() {
var targetDestination = new google.maps.LatLng(destinationLatitude, destinationLongitude);
if (currentPosition != '' && targetDestination != '') {
var request = {
origin: currentPosition,
destination: targetDestination,
travelMode: google.maps.DirectionsTravelMode["DRIVING"]
};
directionsService.route(request, function(response, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setPanel(document.getElementById("directions"));
directionsDisplay.setDirections(response);
/*
var myRoute = response.routes[0].legs[0];
for (var i = 0; i < myRoute.steps.length; i++) {
alert(myRoute.steps[i].instructions);
}
*/
$("#results").show();
}
else {
$("#results").hide();
}
});
}
else {
$("#results").hide();
}
}
$(document).live("pagebeforeshow", "#map_page", function() {
// find current position and on success initialize map and calculate the route
navigator.geolocation.getCurrentPosition(locSuccess, locError);
});
</script>
</head>
<body>
<div id="basic-map" data-role="page">
<div data-role="header">
<h1><a data-ajax="false" href="/">jQuery mobile with Google maps v3</a></h1>
</div>
<div data-role="content">
<div class="ui-bar-c ui-corner-all ui-shadow" style="padding:1em;">
<div id="map_canvas" style="height:350px;"></div>
</div>
<div id="results" style="display:none;">
<div id="directions"></div>
</div>
</div>
</div>
</body>
</html>
Spero che questo aiuti.
Il mio suggerimento sarebbe quello di contattare lo sviluppatore originale (s) in quanto sta utilizzando la versione alfa jQM di 1.0 https://code.google.com/p/jquery-ui-map/source/browse/tags/2.0. 2/demo/jquery-mobile-example-3.html –