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Driving directions are not supported in MapKit. so I think I can show driving direction in a webview. I am showing google maps in uiwebview, but it shows the whole site I just want to show only map part with some zoom so that it looks like original maps application of iphone. Also I don't know if this breaks the apple's Human Interface Guidelines(HIG) Rules, tell me if it is.
463
Load a string like this as an NSString (maybe strip the newlines). You can change the latitude and longitude, zoom level etc with stringWithFormat
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script type="text/javascript">
function initialize() {
var latlng = new google.maps.LatLng(35.000, 139.000);
var myOptions = {
zoom: 15,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:100%; height:100%">
</body>
</html>
Then set your UIWebViews html to that. It will give you a page with just a map on it, allow you to scroll with your finger or zoom in, pinch zoom, and place a marker.
Use this to load the HTML:
- (void)loadHTMLString:(NSString *)string baseURL:(NSURL *)baseURL
Here you go. Pass it through a stringWithFormat with twice the origin lat long and once the destination lat long, all of them as float:
[NSString stringWithformat:... , oriLat,oriLon,oriLat,oriLon,destLat,destLon];
and then pass it into a UIWebView
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
<script type="text/javascript">
var directionsDisplay = new google.maps.DirectionsRenderer();
var directionsService = new google.maps.DirectionsService();
function initialize() {
var latlng = new google.maps.LatLng(%f, %f);
var myOptions = {
zoom: 15,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
directionsDisplay.setMap(map);
calcRoute();
}
function calcRoute() {
var start = new google.maps.LatLng(%f, %f);
var end = new google.maps.LatLng(%f, %f);
var request = {
origin:start,
destination:end,
travelMode: google.maps.DirectionsTravelMode.DRIVING
};
directionsService.route(request, function(result, status) {
if (status == google.maps.DirectionsStatus.OK) {
directionsDisplay.setDirections(result);
}
});
}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:300px; height:300px">
</body>
</html>
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