ACTIONSCRIPT 3 Developer’s Guide en

ACTIONSCRIPT 3.0 DEVELOPER’S GUIDE
Communicating with other Flash Player and AIR instances
The first way to add callback methods is to extend the LocalConnection class. You define the methods within the
custom class instead of dynamically adding them to the LocalConnection instance. This approach is demonstrated in
the following code:
package
{
import flash.net.LocalConnection;
public class CustomLocalConnection extends LocalConnection
{
public function CustomLocalConnection(connectionName:String)
{
try
{
connect(connectionName);
}
catch (error:ArgumentError)
{
// server already created/connected
}
}
public function onMethod(timeString:String):void
{
trace("onMethod called at: " + timeString);
}
}
}
In order to create a new instance of the CustomLocalConnection class, you can use the following code:
var serverLC:CustomLocalConnection;
serverLC = new CustomLocalConnection("serverName");
The second way to add callback methods is to use the LocalConnection.client property. This involves creating a
custom class and assigning a new instance to the client property, as the following code shows:
var lc:LocalConnection = new LocalConnection();
lc.client = new CustomClient();
The LocalConnection.client property indicates the object callback methods that should be invoked. In the
previous code, the client property was set to a new instance of a custom class, CustomClient. The default value for
the client property is the current LocalConnection instance. You can use the client property if you have two data
handlers that have the same set of methods but act differently—for example, in an application where a button in one
window toggles the view in a second window.
To create the CustomClient class, you could use the following code:
package
{
public class CustomClient extends Object
{
public function onMethod(timeString:String):void
{
trace("onMethod called at: " + timeString);
}
}
}
The third way to add callback methods, creating a dynamic class and dynamically attaching the methods, is very
similar to using the LocalConnection class in earlier versions of ActionScript, as the following code shows:
Last updated 6/6/2012
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