flex做图片切换(播放)

Java代码

<?xml version="1.0" encoding="utf-8"?>

<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute"

backgroundColor="white" width="300" height="200" creationComplete="getResult()">
         <mx:Style>
         .vbox {
             backgroundColor: #000000;
             textAlign:center;
             borderStyle:solid;
             borderColor:#ffffff;
         }
         </mx:Style>
<mx:Script>
   <![CDATA[
    import mx.containers.VBox;
    import flash.utils.setInterval;
    import mx.containers.Canvas;
    import mx.controls.Label;
    import mx.controls.Button;
    import mx.controls.Text;
    import mx.controls.Alert;
    import mx.rpc.events.*;
    import mx.collections.*;
    import mx.controls.*;

    import flash.utils.*;
    import flash.events.TimerEvent;

       import flash.events.ContextMenuEvent;

    private var newsListXml:XML;
    private var newsList:XMLListCollection;
    private var PicUrl:String = "E:\\ad\\";
    private var newsArray:Array = new Array; //全局变量，用来装vbox集合
    private var currNews:News;
    private var newsArrayLength:int;

    //发送请求去读取xml文件信息
    public function getResult():void{
       feed.url="http://127.0.0.1:8080/webroot/file/bigAds.xml";   //xml文件路径
       feed.send(null);
    }
    //请求xml成功后处理函数
    public function resultHandler(event:ResultEvent):void {
     canvasid.setStyle("backgroundImage",PicUrl+"5.jpg");
     title.text="哈1";
     newsListXml = XML(event.result);
     init();
     autoPlay();
    }

    public function titileStyle():void{
     var glowFilter:GlowFilter=new GlowFilter();
     glowFilter.color=0xFFFFFF;
     var sampleFilters:Array = title.filters;
     sampleFilters.push(glowFilter);
     title.filters = sampleFilters;
    }

    //错误时处理的函数
    public function handleFault(event:FaultEvent):void{
     Alert.show(event.fault.faultString, "Error");
    }

    //动态创建标签
    public function init():void{
        newsList = new XMLListCollection(newsListXml.children().child(1).children());
        var lb:Label;
        var vbox:VBox;
        for(var i:int=0;i<newsList.length;i++){
         var newsObject:Object=newsList.getItemAt(i);
          lb = new Label();
          var picId:String=newsObject.@pk;
          lb.id = "pic"+picId;    //存id
          lb.text = String(i+1);
          var picName:String=newsObject.@pk+".jpg";   //存图片路径
          lb.name = picName;   //存图片名字
          lb.setStyle("color","#ffffff");
          lb.useHandCursor = true;
          lb.buttonMode = true;
          lb.mouseChildren = false;
          lb.height=15;
          lb.width=22;
          var title:String =newsObject.entry.(@key=="title");

             vbox = new VBox();
          vbox.id = ""+i;

          vbox.addChild(lb);

          vbox.styleName="vbox";
          addIndexEvent(lb,vbox);     //动态为tx标签元素添加事件
           HboxIndexSet.addChild(vbox);

           var news:News=new News();
           news.seq=i;
           news.id=newsObject.@pk;
           news.title=newsObject.entry.(@key=="title");
           news.img=newsObject.@pk+".jpg";
           news.indexBox=vbox;
           newsArray[i]=news;
       }

       titileStyle();
       newsArrayLength=newsArray.length;
       currNews=newsArray[newsArrayLength-1];
       setInterval(function():void{autoPlay();},3000);                           //as2.0中用setInterval
       ///var ttime:Timer = new Timer(2000,0);
      /// ttime.addEventListener(TimerEvent.TIMER,function():void{autoPlay();});   //as3.0中用time取代了setInterval
       ///ttime.start();
    }

    //动态为标签添加事件
       public function addIndexEvent(tagetObject:Object,box:VBox):void{   //参数一代表哪个标签对像,二是一个变量参数
     tagetObject.addEventListener(MouseEvent.CLICK,function():void{clickIndex(box);});
       }

          //处理事件函数
    public function clickIndex(box:VBox):void{
     toTop(newsArray[box.id])
    }

    //自动切换(播放)
    public function autoPlay():void{
     var currSeq:int=currNews.seq;
     var nextSeq:int=(currSeq+1)%newsArrayLength;
     var nextNews:News=newsArray[nextSeq];
     toTop(nextNews);
    }

    //图片切换，背景色切换
    public function toTop(nextNews:News):void{
     currNews.indexBox.setStyle("backgroundColor","#000000");
     nextNews.indexBox.setStyle("backgroundColor","red");
     canvasid.setStyle("backgroundImage",PicUrl+nextNews.img);
     title.text=nextNews.title;
     currNews=nextNews;

    }


    //打开一个浏览器（暂没用）
//   public function showPic():void{
//    navigateToURL(new URLRequest("http://www.baidu.com"),"_blank");
//   }
   ]]>
</mx:Script>


<mx:HTTPService id="feed" resultFormat="e4x" result="resultHandler(event)"
fault="handleFault(event);" useProxy="false" />
<mx:VBox width="300" height="200" verticalAlign="bottom" verticalGap="0"
id="canvasid" horizontalCenter="0" verticalCenter="0" verticalScrollPolicy="off"

horizontalScrollPolicy="off">
        <mx:Label x="123" y="180" text="Label" height="26"

color="#000000" fontSize="20" fontWeight="bold" id="title"   />
        <mx:HBox x="211" y="180" width="100%"

backgroundColor="#000000" backgroundAlpha="0.50"   horizontalAlign="right" id="HboxIndexSet"

horizontalGap="1" horizontalScrollPolicy="off"/>
      </mx:VBox>
</mx:Application>

http://www.javaeye.com/upload/attachment/35803/afcc61a9-46ec-3980-b4ac-cddbca1815e6.bmp