Loading XML with ActionScript and Arbol Negro
One of the most common task in actionscript in loading XML, it is the native way to load complex data; but there is a time when this process become a little anoying, because as you remember, in as2, load XML was just a couple of lines; in as3 is not that hard, but there are a couple of separate steps to load it and it’s sometimes confusing for begginers.
I have created XMLHandler to carry on those repetitions to “the easy way”, here is an example:
package
{
import flash.display.MovieClip;
import flash.events.Event;
import flash.events.ProgressEvent;
import net.absulit.arbolnegro.data.XMLHandler;
/**
* ...
* @author Sebastián Sanabria Díaz
*/
public class Main extends MovieClip
{
private var _xmlHandler:XMLHandler
public function Main()
{
_xmlHandler = new XMLHandler();
_xmlHandler.addEventListener(Event.COMPLETE, onCompleteXMLHandler);
_xmlHandler.addEventListener(ProgressEvent.PROGRESS, onProgressEvent);
_xmlHandler.path = "data.xml";
}
private function onProgressEvent(e:ProgressEvent):void
{
trace(e.bytesLoaded / e.bytesTotal);
}
private function onCompleteXMLHandler(e:Event):void
{
e.target.removeEventListener(Event.COMPLETE, onCompleteXMLHandler);
//trace(e.target.xml);//using event parameter
trace(_xmlHandler.xml);//using the private var
}
}
}
This is a very simple example, loads XML, traces it, also shows its progress, which in a bigger XML file will be more useful.
Download example files:
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