ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Geolocation
var geo:Geolocation;
if (Geolocation.isSupported)
{
geo = new Geolocation();
geo.addEventListener(GeolocationEvent.UPDATE, updateHandler);
}
else
{
geoTextField.text = "Geolocation feature not supported";
}
function updateHandler(event:GeolocationEvent):void
{
geoTextField.text = "latitude: " + event.latitude.toString() + "\n"
+ "longitude: " + event.longitude.toString() + "\n"
+ "altitude: " + event.altitude.toString()
+ "speed: " + event.speed.toString()
+ "heading: " + event.heading.toString()
+ "horizontal accuracy: " + event.horizontalAccuracy.toString()
+ "vertical accuracy: " + event.verticalAccuracy.toString()
}
To use this example, be sure to create the geoTextField text field and add it to the display list before using this code.
You can adjust the desired time interval for geolocation events by calling the setRequestedUpdateInterval()
method of the Geolocation object. This method takes one parameter, interval, which is the requested update interval
in milliseconds:
var geo:Geolocation = new Geolocation();
geo.setRequestedUpdateInterval(10000);
The actual time between geolocation updates may be greater or lesser than this value. Any change in the update interval
affects all registered listeners. If you don’t call the setRequestedUpdateInterval() method, the application receives
updates based on the device's default interval.
The user can prevent an application from accessing geolocation data. For example, the iPhone prompts the user when
an application attempts to obtain geolocation data. In response to the prompt, the user can deny the application access
to geolocation data. The Geolocation object dispatches a status event when the user makes access to geolocation data
unavailable. Also, the Geolocation object has a muted property, which is set to true when the geolocation sensor is
unavailable. The Geolocation object dispatches a status event when the muted property changes. The following code
shows how to detect when geolocation data is unavailable:
Last updated 6/6/2012
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