Flex加载一张图片多处使用
用Flex加载一张图片，在界面上的多处显示，例：
package service{import flash.display.Bitmap;import flash.display.BitmapData;import flash.display.Loader;import flash.events.Event;import flash.events.IOErrorEvent;import flash.net.URLRequest;import flash.system.Security;import mx.core.Application;import mx.core.UIComponent;/** * 图片加载类。<BR> */public class ImageLoader{// 请求用private var mRequest:URLRequest;// 加载用private var mLoader:Loader/** * 构造函数。<BR> */public function ImageLoader() {mRequest = new URLRequest();mLoader = new Loader();mLoader.contentLoaderInfo.addEventListener(Event.COMPLETE, onLoadComplete);mLoader.addEventListener(IOErrorEvent.IO_ERROR, onIOError);}/** * 设定URL。<BR> */public function setUrl(url:String):void {Security.allowDomain(url);mRequest.url = url;}/** * 加载图片。<BR> */public function load():void {mLoader.load(mRequest);}/** * 加载完成的处理。<BR> */private function onLoadComplete(event:Event):void {trace("Load Complete");var bmd:BitmapData = Bitmap(event.currentTarget.content).bitmapData;loadImage1(bmd.clone());loadImage2(bmd.clone());}/** * IO错误发生的处理。<BR> */private function onIOError(event:Event):void {trace("IO Error");}/** * 加载Image1。<BR> */private function loadImage1(bmd:BitmapData):void {var ui:UIComponent = new UIComponent();var bmp:Bitmap = new Bitmap(bmd);bmp.width = 400;bmp.height = 200;ui.addChild(bmp);Application.application.image1.addChild(ui);}/** * 加载Image2。<BR> */private function loadImage2(bmd:BitmapData):void {var ui:UIComponent = new UIComponent();var bmp:Bitmap = new Bitmap(bmd);bmp.width = 400;bmp.height = 200;ui.addChild(bmp);Application.application.image2.addChild(ui);}}}?
<?xml version="1.0" encoding="utf-8"?><mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute" creationComplete="init()"><mx:Script><![CDATA[import service.ImageLoader;private var loader:ImageLoader;/** * 初始化。<BR> */private function init():void {loader = new ImageLoader();loader.setUrl("");loader.load();}]]></mx:Script><!-- GUI --><mx:Label x="57" y="8" text="Image 1"/><mx:Canvas id="image1" x="57" y="34" width="370" height="200"></mx:Canvas><mx:Label x="57" y="260" text="Image 2"/><mx:Canvas id="image2" x="57" y="286" width="370" height="200"></mx:Canvas></mx:Application>?
注意：设置自己的图片url。(图片格式：jpg,png)不能为bmp?
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