I'm exploring creating a (free and open source) offline mapping app for the BlackBerry PlayBook. So far, the plan is:
- Use the Leaflet ( http://leaflet.cloudmade.com/ ) library to create a touch interface.
- Download test tiles from OpenStreetMaps ( http://www.openstreetmap.org/ ).
- Get Leaflet reading from the local filesystem instead of pulling them off the Web.
- Use the BlackBerry WebWorks Geolocation API to place and update a marker on the map.
Unfortunately, I'm stuck on #1 for a strange reason. If I reference a page that loads the Leaflet library on a remote server, the touch events work properly - drag to zoom, double tap to zoom, pinch - it all works. However, if I take the exact same page that was referenced via a http:// call and instead use local:/// , the touch events don't work.
This works:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0;" />
<title>Azimuth</title>
<link rel="stylesheet" href="leaflet/leaflet.css" />
<script src="leaflet/leaflet.js"></script>
<style>
body {
padding: 0;
margin: 0;
}
html, body, #map {
height: 600px;
}
</style>
</head>
<body>
<script>
//window.location = 'local:///map.html';
window.location = 'http://leaflet.cloudmade.com/examples/mobile-example.html';
</script>
</body>
</html> But this does not:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0;" />
<title>Azimuth</title>
<link rel="stylesheet" href="leaflet/leaflet.css" />
<script src="leaflet/leaflet.js"></script>
<style>
body {
padding: 0;
margin: 0;
}
html, body, #map {
height: 600px;
}
</style>
</head>
<body>
<script>
window.location = 'local:///map.html';
//window.location = 'http://leaflet.cloudmade.com/examples/mobile-example.html';
</script>
</body>
</html>The code for the app is located here: http://yllus.com/wp-content/uploads/2011/08/azimuth.zip
You'll need to update the author and authorId values in blackberry-tablet.xml but past that, the app should simply work. Does anyone know what the deal is here? If we can solve this, we're most of the way to having a very nice offline GPS map app for the PlayBook.
