Flex Preloader

在网上看到好多关于flex preloader,但是有的不是很理想,其中有一个加载flash的,组件都初始化结束了,那flash还在那里动.
最近也用到这个preloader,把它改造了一下,加载完flash后在显示组件,

package com.preload
{
       import flash.display.Loader;
       import flash.events.Event;
       import flash.events.TimerEvent;
       import flash.geom.Point;
       import flash.utils.ByteArray;
       import flash.utils.Timer;
    
    public class WelcomeScreen extends Loader
    {
        
        [Embed(source="../asserts/welcome.swf", mimeType="application/octet-stream")]
        public var WelcomeScreenGraphic : Class;
        public var timer : Timer;
        private var fadeInRate : Number  = .01;
        private var fadeOutRate : Number = .02;
        private var timeAutoClose : int = 100;
        public var ready : Boolean = false; 
        public var COMPLETE_EVENT : String = "complete";
        private var completeFlag : Boolean = true;

        
        public function WelcomeScreen()
        {
            this.visible = false;
            this.alpha = 0;
            timer = new Timer(1);
            timer.addEventListener(TimerEvent.TIMER, updateView);
            timer.start();
            this.loadBytes(new WelcomeScreenGraphic() as ByteArray);
            //this.addEventListener( MouseEvent.MOUSE_DOWN, mouseDown );             
        }
        
        public function updateView(event : TimerEvent):void
        {
           if(completeFlag)
            { 
                if(this.alpha < 1)    this.alpha = this.alpha + this.fadeInRate;
                this.stage.addChild(this);
                var point : Point = new Point();
                this.x = this.stage.stageWidth/2 - this.width/2;
                this.y = this.stage.stageHeight/2 - this.height/2;        
                this.visible=true;
                completeFlag  = false;
             }
            if (this.ready && timer.currentCount > this.timeAutoClose)
             closeScreen();
        }
        
        public function closeScreen():void
        {
            timer.removeEventListener(TimerEvent.TIMER, updateView);
            timer.addEventListener(TimerEvent.TIMER, closeScreenFade);                    
        }
        
        public function closeScreenFade(event : TimerEvent):void
        {
            timer.stop();
            this.parent.removeChild(this);
            dispatchEvent(new Event(COMPLETE_EVENT));
        }        
    } 
}

package com.preload
{
 
    
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.ProgressEvent;
    
    import mx.events.*;
    import mx.preloaders.DownloadProgressBar;

    public class CustomPreloader extends DownloadProgressBar {

        public var wcs:WelcomeScreen;
    
        public function CustomPreloader() 
        {
            super(); 
            wcs = new WelcomeScreen();
            this.addChild(wcs)                   
        }
    
        override public function set preloader( preloader:Sprite ):void 
        {                   
            preloader.addEventListener(ProgressEvent.PROGRESS, SWFDownloadProgress);    
            preloader.addEventListener(Event.COMPLETE, SWFDownloadComplete);
            preloader.addEventListener(FlexEvent.INIT_PROGRESS, FlexInitProgress);
            preloader.addEventListener(FlexEvent.INIT_COMPLETE, FlexInitComplete);
            this.wcs.addEventListener(wcs.COMPLETE_EVENT, wcsComplete);
        }
    
        private function SWFDownloadProgress(event : ProgressEvent):void {}
    
        private function SWFDownloadComplete(event : Event):void {}
    
        private function FlexInitProgress(event : Event):void {}
    
        private function FlexInitComplete(event : Event):void 
        {               
            wcs.ready = true;
        }
        
        
            
        private function wcsComplete(event : Event) : void
        {
            wcs.ready = true;
            dispatchEvent(new Event( Event.COMPLETE));
        }
        
     }

}

flash动画就不上传了.望大家参考.