flex

<?xml version="1.0" encoding="utf-8"?> <s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" ? xmlns:s="library://ns.adobe.com/flex/spark" ? xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" initialize="init()"> <s:layout> <s:BasicLayout/> </s:layout> <fx:Declarations> <!-- 将非可视元素（例如服务、值对象）放在此处 --> </fx:Declarations> <fx:Script> <![CDATA[ import mx.utils.*; ?? import flash.net.*; ?? private var fileReference:FileReference=new FileReference(); ?? private var byteArray:ByteArray; ?? private var bitmapData:BitmapData; ?? private var loader:Loader=new Loader(); ?? private function init():void ?? { ? ? ? ? ? ? ? ? ? fileReference.addEventListener(Event.COMPLETE,fileReferenceCompleteHandler); ?? } ?? private function fileReferenceCompleteHandler(e:Event):void ?? { ?? byteArray = fileReference.data; ?? loader.contentLoaderInfo.addEventListener(Event.COMPLETE,loaderCompleteHandler); ?? loader.loadBytes(byteArray); ?? } ?? private function loaderCompleteHandler(e:Event):void ?? { ?? var bitmap:Bitmap = Bitmap(loader.content); ?? bitmapData = bitmap.bitmapData; ?? img.source = bitmap; ?? } ?? private function fileReferenceSelectHandler(e:Event):void ?? { ?? fileReference.load(); ?? } ?? private function btnClick():void ?? { ?? fileReference.browse(); ?? fileReference.addEventListener(Event.SELECT,fileReferenceSelectHandler); ?? } ?? ]]> </fx:Script> <mx:Panel width="456" height="345" horizontalCenter="0" verticalGap="0" > <mx:Image id="img" width="263" height="234"/> <s:Button label="浏览..." click="btnClick()"/> </mx:Panel> </s:Application>