package { import mx.preloaders.*; import flash.events.ProgressEvent; import mx.controls.Image; 1、新建 一个 myProgressBars .as文件 public class myProgressBars extends DownloadProgressBar { public function myProgressBars() { super(); var img:Image; //加载背景图片没有成功,如果哪位知道 请赐教 this.backgroundImage = img; downloadingLabel="正在下载应用
"; initializingLabel="初始化应用
"; MINIMUM_DISPLAY_TIME=2000; } override protected function showDisplayForInit( elapsedTime:int, count:int):Boolean { return true; } override protected function showDisplayForDownloading( elapsedTime:int, event:ProgressEvent):Boolean { return true; } } } 2、 <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" preloader="myProgressBars" //加入这一行