ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Client system environment
var url:String = "log_visitor.cfm";
var request:URLRequest = new URLRequest(url);
request.method = URLRequestMethod.POST;
request.data = new URLVariables(Capabilities.serverString);
var loader:URLLoader = new URLLoader(request);
Capabilities example: Detecting system capabilities
Flash Player 9 and later
The CapabilitiesExplorer example demonstrates how you can use the flash.system.Capabilities class to determine
which features the user’s version of the Flash runtime supports. This example teaches the following techniques:
Detecting which capabilities the user’s version of the Flash runtime supports using the Capabilities class
Using the ExternalInterface class to detect which browser settings the user’s browser supports
To get the application files for this sample, see www.adobe.com/go/learn_programmingAS3samples_flash. The
CapabilitiesExplorer application files can be found in the folder Samples/CapabilitiesExplorer. This application
consists of the following files:
File Description
CapabilitiesExplorer.fla
or
CapabilitiesExplorer.mxml
CapabilitiesExplorer overview
Flash Player 9 and later
The CapabilitiesExplorer.mxml file is responsible for setting up the user interface for the CapabilitiesExplorer
application. The capabilities of the user’s version of the Flash runtime will be displayed within a DataGrid component
instance on the Stage. Their browser capabilities will also be displayed if they are running the application from an
HTML container and if the external API is available.
When the main application file’s creationComplete event is dispatched, the initApp() method is invoked. The
initApp() method calls the getCapabilities() method from within the
com.example.programmingas3.capabilities.CapabilitiesGrabber class. The code for the initApp() method is as
follows:
private function initApp():void
{
var dp:Array = CapabilitiesGrabber.getCapabilities();
capabilitiesGrid.dataProvider = dp;
}
Last updated 6/6/2012
The main application file in Flash (FLA) or Flex (MXML).
com/example/programmingas3/capabilities/CapabilitiesGrabber.as The class that provides the main functionality of the application,
including adding the system Capabilities to an array, sorting the
items, and using the ExternalInterface class to retrieve browser
capabilities.
capabilities.html An HTML container that contains the necessary JavaScript to
communicate with the external API.
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