The Location extension provides functionality to get location information about a user’s device using GPS and other location sources. It extends the functionality of the AIR geolocation class.
The simple API allows you to quickly integrate location updates in your AIR application in just a few lines of code. Identical code base can be used across all platforms allowing you to concentrate on your application and not device specifics. You can get location updates, specifying accuracy, priority and other location request details, and receive location update events even when the device is in the background. You can also set geofences, allowing your application to receive an event whenever the device enters or exits a defined region.
We provide complete getting started guide to get you up and running with location quickly and easily.
As with all our extensions you get access to a year of support and updates as we are continually improving and updating the extensions for OS updates and feature requests.
The position reported by this extension is a “fused location” i.e. uses all the potential positioning methods on a device to give location information.
This includes position from wifi and gps.
The heading is not related to the device position, but the device travel. This is using the changes in position of the device over time. If you need device position / orientation information have a look at the DeviceMotion ANE.
The altitude is the most inaccurate coordinate. Due to the way GPS works the vertical accuracy is the least precise (http://gpsinformation.net/main/altitude.htm)
Altitude is reported as the height above the WGS84 ellipsoid and not sea level which can change around the world. You can read more on this here: http://www.gpspassion.com/forumsen/topic.asp?TOPIC_ID=10915