ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Geolocation
var geo:Geolocation;
var latitude:Number;
var longitude:Number;
if (Geolocation.isSupported)
{
geo = new Geolocation();
if (!geo.muted)
{
geo.addEventListener(GeolocationEvent.UPDATE, updateHandler);
geo.addEventListener(StatusEvent.STATUS, geoStatusHandler);
}
}
else
{
trace("not supported");
}
function updateHandler(event:GeolocationEvent):void
{
latitude = event.latitude;
longitude = event.longitude;
}
function geoStatusHandler(event:StatusEvent):void
{
geo.removeEventListener(GeolocationEvent.UPDATE, updateHandler);
}
Note: First-generation iPhones, which do not include a GPS unit, dispatch update events only occasionally. On these
devices, a Geolocation object initially dispatches one or two update events. It then dispatches update events when
information changes noticeably.
Checking geolocation support
Use the Geolocation.isSupported property to test the runtime environment for the ability to use this feature:
if (Geolocation.isSupported)
{
// Set up geolocation event listeners and code.
}
Currently, geolocation is only supported on ActionScript-based applications for the iPhone and in Flash Lite 4. If
Geolocation.isSupported is true at run time, then geolocation support exists.
Some iPhone models do not have a GPS unit. These models use other means (such as mobile phone triangulation) to
obtain geolocation data. For these models, or on any iPhone that has the GPS disabled, a Geolocation object may only
dispatch one or two initial update events.
Last updated 6/6/2012
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