Flash笔记之URLStream和loader载入图片

package
{
	import flash.display.Loader;
	import flash.display.Sprite;
	import flash.events.Event;
	import flash.events.ProgressEvent;
	import flash.net.URLRequest;
	import flash.net.URLStream;
	import flash.utils.ByteArray;
	
	public class LoadImage extends Sprite
	{
		private var loader:Loader
		private var urlStream:URLStream;
		
		public function LoadImage() {
			urlStream=new URLStream();
			urlStream.load(new URLRequest("http://www.joy.cn/images/1203489128205.jpg"));
			urlStream.addEventListener(Event.COMPLETE,imageCompleteHandler);
			
			loader= new Loader();
			addChild(loader);
		}
		public function imageCompleteHandler(e:Event):void {
			this.urlStream.removeEventListener(Event.COMPLETE,this.imageCompleteHandler);
			var ba:ByteArray = new ByteArray();
			this.urlStream.readBytes(ba);
			
			loader.contentLoaderInfo.addEventListener(Event.COMPLETE,this.onLoaderHandler);
			loader.loadBytes(ba);
			
			this.urlStream.close();
		}
		private function onLoaderHandler(e:Event):void{
			e.target.removeEventListener(Event.COMPLETE,this.onLoaderHandler);
		}
	}
}