加载时百分比度条

import flash.display.Loader;
import flash.net.URLRequest;
import flash.events.ProgressEvent;
import flash.events.Event;

var loader:Loader=new Loader();
loader.load(new URLRequest("images/shoe.jpg"));

addChild(loader);

loader.y=50;
loader.x=70;


loader.contentLoaderInfo.addEventListener(ProgressEvent.PROGRESS,progressHandler);
loader.contentLoaderInfo.addEventListener(Event.INIT,initHandler);

function progressHandler(event:ProgressEvent):void{
    mProgress.tLoadingProgress.text=Math.round(event.bytesLoaded/event.bytesTotal*100)+"%";
}

function initHandler(event:Event):void{
    mProgress.visible=false;
}