App doesn't geolocate after installation on FF OS - html

Question

I've written a web app for Firefox Mobile / Firefox OS. My app uses geolocation.
It worked well when I tested it with Firefox for Android and the FFOS simulator add-on by visiting the web address of the application. Recently I've passed the Firefox Marketplace review and my app is installable on FFOS and Firefox for Android. To my surprise, when I installed and ran it, geolocation didn't work.
Here's an excerpt from the .webapp file:
"permissions": {
"geolocation": {
"description": "Required for ....."
}
}
Here's the relevant part of JS:
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(positionFound, positionNotFound, {
enableHighAccuracy: false,
maximumAge: 3600000
});
}
else {
$('#location').html('No geolocation support');
}
The else block is not executed, so JS detects that geolocation exists, but the callback is never called, and the GPS icon never blinks.
The app still works and positionFound() is called properly when accessed via its URL, not as an installed app.
How can I make it geolocate after installation?

Answer 1

The following code works for us, however GPS functionality is severely limited on the Geeksphone FFOS 1.2 nightly builds as well as aGPS on FFOS 1.0 (time to first fix ~ 5min). The geoLocation API requires frequent reboots on our devices. For us, FFOS 1.1 worked best so far. Try to use one of the existing GPS apps like "gpsDashboard" before starting your app. This way you know your phone is working.
function geo_success(position) {
alert(position.coords.longitude);
}
function geo_error() {
alert("Sorry, no position available.");
}
var geo_options = {
enableHighAccuracy: true,
maximumAge : 300000,
timeout : 270000
};
navigator.geolocation.watchPosition(geo_success, geo_error, geo_options);
Do your callback functions work properly with fake data?

Answer 2

Here's a post on the Mozilla Hacks Blog that discusses geolocation tips and tricks, as well as limitations with some of the developer devices:
https://hacks.mozilla.org/2013/10/who-moved-my-geolocation/