flash as3.0 进度条

stage.scaleMode=StageScaleMode.NO_SCALE;              //设置舞台属性不跟随播放器大小而改变
stage.showDefaultContextMenu=false;                //屏蔽右键菜单
stage.frameRate=12;                          //帧频率
var stageW=stage.stageWidth;  
var stageH=stage.stageHeight;        //取得舞台的宽和高
var loadclip:MovieClip=new MovieClip();        //创建预载动画loadclip
this.addChild(loadclip);             //将预载动画loadclip添加到舞台
var txt=new TextField();             //创建文本文件txt
txt.autoSize=TextFieldAutoSize.CENTER;       //文本文件自适应大小并且居中显示
txt.text="Johnny portfolio loading...";        
txt.textColor=0x000000;              //设置文本颜色
txt.selectable=false;      //文本设置为不可选
txt.x=stageW/2-txt.width/2;      
txt.y=stageH/2-txt.height/2;       //设置x,y轴的坐标,使他们居中
loadclip.addChild(txt).name="txt";       

//将文本txt添加到loadclip中

var stgb=new Sprite;
stgb.graphics.lineStyle(1,0x000000,1);
stgb.graphics.beginFill(0x3399ff, .5);        //采用单色填充, 红色透明50%(0.5)
stgb.graphics.endFill();
stgb.x=stageW/2-stage.width/2;
stgb.y=txt.y+txt.height+5;
loadclip.addChild(stgb);

//绘制进度条底色并且添加到舞台

var stg=new Sprite();
stg.graphics.lineStyle(1, 0x000000, 0.5);
stg.graphics.beginGradientFill(GradientType.LINEAR, [0XFF0000, 0xffff00], [100,100], [0,255]);

//填充渐变色:红到黄

stg.graphics.drawRect(0, 0 ,200, 10);
stg.graphics.endFill();
stg.x=stageW/2-stg.width/2;
stg.y=txt.y+txt.height+5;
loadclip.addChild(stg);

//绘制进度条并且添加到舞台

this.loaderInfo.addEventListener(ProgressEvent.PROGRESS, loading);
this.loaderInfo.addEventListener(Event.COMPLETE, loaded);

//添加进度完成监听器

function loading(eve) {
    var loadpre:int=eve.bytesLoaded/eve.bytesTotal*100;
    txt.text="Johnny portfolio loading..."+loadpre+"%";
    stg.scaleX=loadpre/100;
}

//显示进度条载入百分比

function loaded(eve) {
    txt.text="影片载入完毕!";
    if (framesLoaded==totalFrames) {
        removeChild(this.getChildAt(0));
        nextFrame();
    }
}