怎么做自定义Loading加载其它swf

如何做自定义Loading加载其它swf

const FILE_PATH:String="main.swf";const CLASS_NAME:String="MainSwf";var loader:Loader;var request:URLRequest;loader = new Loader();request=new URLRequest(FILE_PATH);loader.contentLoaderInfo.addEventListener(Event.COMPLETE,onComplete);loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS,onProgress);loader.load(request);function onComplete(e:Event):void {var domain:ApplicationDomain=e.target.applicationDomain as ApplicationDomain;var swfClass:Class=domain.getDefinition(CLASS_NAME) as Class;var swfInstance:Sprite = (new swfClass()) as Sprite;swfInstance.x=0;swfInstance.y=0;//卸掉舞台上现有的东西var _childCount = numChildren;for (var i:int=_childCount-1; i>=0; i--) {this.removeChildAt(i);}//加载刚下载的动画this.addChild(swfInstance);}function onProgress(e:ProgressEvent) {//trace(e);label1.text = "正在加载，" + e.bytesLoaded + " / " + e.bytesTotal + "， " + (Math.round(  (100 * e.bytesLoaded / e.bytesTotal) / 0.01) * 0.01) + " %";}stop();