ActionScript 3 基本的外部XML加载器

Posted 2021-05-23

package 
{
	import flash.events.Event;
	import flash.events.EventDispatcher;
	import flash.events.IOErrorEvent;
	import flash.net.URLLoader;
	import flash.net.URLRequest;
	
	/**
	 * ...
	 * @author ...
	 */
	public class LoadXML extends EventDispatcher
	{
		private var data:XML;
		private var loader:URLLoader;
		
		public function LoadXML(path:String)
		{
			loader = new URLLoader();
			loader.addEventListener(Event.COMPLETE, onComplete, false, 0, true);
			loader.addEventListener(IOErrorEvent.IO_ERROR, onIOError, false, 0, true);
			loader.load(new URLRequest(path));
		}
		
		//---------------------------------------------------------------------------------------
		
		private function onComplete(event:Event):void
		{
			try
			{
				data = new XML(event.target.data);
				
				loader.removeEventListener(Event.COMPLETE, onComplete);
				loader.removeEventListener(IOErrorEvent.IO_ERROR, onIOError);
				
				dispatchEvent(new Event(Event.COMPLETE));
			}
			catch (error:Error)
			{
				trace("Could not load XML: " + error);
			}
		}
		
		//---------------------------------------------------------------------------------------
		
		private function onIOError(event:IOErrorEvent):void
		{
			trace("An error occured trying to load the XML: " + event.text);
		}
		
		//---------------------------------------------------------------------------------------
		
		public function getXML():XML
		{
			return data;
		}
		
		//---------------------------------------------------------------------------------------
	}	
}

//---------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------
//---------------------------------------------------------------------------------------
//ADD THIS TO THE TIMELINE

import flash.events.Event;

var n:LoadXML = new LoadXML("data.xml");
var xml:XML;

n.addEventListener(Event.COMPLETE, onComplete);

function onComplete(event:Event):void
{
	xml = n.getXML();
}