使用flash.display.Loader加载图片

QQ给图片加了防盗，有空再换个图片吧。 点击下载 源码 提取码 18a84ab2

 

 1package {
 2    import flash.display.Loader;
 3    import flash.display.Sprite;
 4    import flash.events.Event;
 5    import flash.events.IOErrorEvent;
 6    import flash.events.ProgressEvent;
 7    import flash.net.URLRequest;
 8    
 9    [SWF(width="713", height="456", frameRate="24",background="#xffffff")] 
    public class Main extends Sprite
    {
        private var bgLoader:Loader;
        private var loadingPanel:LoadingPanel;
        
        public function Main()
        {
            this.bgLoader = new Loader();
            this.loadingPanel = new LoadingPanel();
            this.bgLoader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
            this.bgLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, bgCompleteHandler);
            this.bgLoader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS, progressHandler);
            this.bgLoader.load(new URLRequest("http://cnc.imgcache.qq.com/qqhome_v2/parker/bgitem/1000002.jpg"));
            this.addChild(this.bgLoader);
            this.addChild(this.loadingPanel);
            this.loadingPanel.show();
        }
        
        private function ioErrorHandler(ioErrorEvent:IOErrorEvent):void
        {
            
        }
        
        private function bgCompleteHandler(event:Event):void
        {
            this.loadingPanel.hide();
        }
        
        private function progressHandler(event:ProgressEvent):void
        {
            var bytesLoaded:Number;
            var bytesTotal:Number;
            var currentPercent:uint;
            bytesLoaded = event.bytesLoaded;
            bytesTotal = event.bytesTotal;
            if (bytesLoaded > 20 && bytesLoaded <= bytesTotal)
            {
                currentPercent = Math.round(bytesLoaded * 100 / bytesTotal);
                trace(currentPercent);
                this.loadingPanel.pro(currentPercent);
            }
            return;
        }
    }
}

 

 1package
 2{
 3    import flash.display.*;    
 4    import mx.effects.*;
 5    import mx.effects.easing.*;
 6    
 7    public class LoadingPanel extends MovieClip
 8    {
 9        private var loadingBar:LoadingBar;
        private var myTween:Tween;
        
        public function LoadingPanel()
        {
            this.loadingBar = new LoadingBar();
            addChild(this.loadingBar);
            this.x = 260;
            this.y = 200;
            this.mouseEnabled = false;
            this.visible = false;
        }
        
        public function hide() : void
        {
            this.visible = false;
            return;
        }

        public function pro(currentPercent:uint) : void
        {
            this.loadingBar.pro.text = "已载入：" + currentPercent + "%";
            return;
        }

        public function show() : void
        {
            this.visible = true;
            this.loadingBar.pro.text = "请稍候";
            this.myTween = new Tween(this.loadingBar,0,1,1.5,-1,this.onUpdateFunction,this.onEndFunction);
            return;
        }
        
        private function onUpdateFunction(value:Object):void
        {
            this.loadingBar.alpha = value as Number;
        }
        
        private function onEndFunction(value:Object):void
        {
            this.loadingBar.alpha = value as Number;
        }
    }
}