Flex中本地图片上传及上传文件前的预览

发布时间：2020-12-15 03:54:31 所属栏目：百科来源：网络整理

导读：[java] ? view plain copy ?xml?version= "1.0" ?encoding= "utf-8" ?????? mx:Application?xmlns:mx= "http://www.adobe.com/2006/mxml" ?layout= "absolute" ?fontSize= "12" ?creationComplete= "init()" ????? ????mx:Script????? ????????!--[CDATA[???

[java]? 
  view plain 
  copy 
   
  

<?xml?version="1.0"?encoding="utf-8"?>?????
<mx:Application?xmlns:mx="http://www.adobe.com/2006/mxml"?layout="absolute"?fontSize="12"?creationComplete="init()">?????
????<mx: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): ????????????{?????
????????????????byteArray?=?fileReference.data;?????
????????????????loader.contentLoaderInfo.addEventListener(Event.COMPLETE,loaderCompleteHandler);?????
????????????????loader.loadBytes(byteArray);?????
private?function?loaderCompleteHandler(e:Event): ????????????????var?bitmap:Bitmap?=?Bitmap(loader.content);?????
????????????????bitmapData?=?bitmap.bitmapData;?????
????????????????img.source?=?bitmap;?????
private?function?fileReferenceSelectHandler(e:Event): ????????????????fileReference.load();?????
private?function?btnClick(): ????????????????fileReference.browse();?????
????????????????fileReference.addEventListener(Event.SELECT,fileReferenceSelectHandler);?????
????????????}?????
????????]]-->?????
????</mx:Script>?????
????<mx:Panel?width="456"?height="345"?horizontalCenter="0"?verticalGap="0"?horizontalAlign="center"?verticalAlign="middle">?????
????????<mx:Image?id="img"?width="263"?height="234"/>?????
????????<mx:Button?label="选择..."?click="btnClick()"/>?????
????</mx:Panel>?????
</mx:Application> ? ?

（编辑：李大同）

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