(原创)flex(AIR)远程文件下载实例(高级版)
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
??????? xmlns:s="library://ns.adobe.com/flex/spark"
??????? xmlns:mx="library://ns.adobe.com/flex/halo">
<fx:Script>
?? <![CDATA[
??? import flash.net.URLRequest;
??? import flash.filesystem.File;
??? import flash.events.FileListEvent;
???????? private var downFileURL:URLRequest;
??? private var netFile:File;
???
??? public function downLoad(netFileURL:String):void{
?????? downFileURL = new URLRequest(netFileURL);
???? netFile = new File();
???? configureListeners(netFile);
???? netFile.download(downFileURL);
??? }
???
??? private function configureListeners(dispatcher:IEventDispatcher):void{
???? dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
???? dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);??? //当由于安全错误导致下载失败时调度
???? dispatcher.addEventListener(Event.SELECT, selectHandler);??? //当用户从对话框中选择要下载的文件时调度
???? dispatcher.addEventListener(Event.OPEN, openHandler);??? // 当下载操作开始时调度
???? dispatcher.addEventListener(ProgressEvent.PROGRESS, progressHandler);??? //在文件下载操作期间进行定期调度
???? dispatcher.addEventListener(Event.CANCEL, cancelHandler);???? //当用户取消对话框时调度
???? dispatcher.addEventListener(Event.COMPLETE, completeHandler);??? //当文件下载操作成功完成时调度
??? }
???
??? private function selectHandler(event:Event):void {
???? var file:File = File(event.target);
???? trace("下载文件本地存放绝对路径：" + file.nativePath);??? //下载文件本地存放绝对路径：E:\flex4\logo_cn.gif
???? trace(file.url);??? //file:///E:/flex4/logo_cn.gif
??? }
???
??? private function openHandler(event:Event):void {
//???? trace("openHandler: " + event);
??? }
???
??? private function progressHandler(event:ProgressEvent):void {
???? var file:File = File(event.target);
???? trace("文件本地化后的名称：" + file.name);????? //文件本地化后的名称：logo_cn.gif
???? trace("文件下载到本地的日期：" + file.creationDate);??? //Fri Jan 15 09:15:29 GMT+0800 2010
???? trace("到本地时的文件大小：" + file.size);????? //到本地时的文件大小：7763
???? trace("已下载字节数：" + event.bytesLoaded);??? //已下载字节数：7763
???? trace("文件总字节数：" + event.bytesTotal);???? //文件总字节数：7763
??? }
???
??? private function cancelHandler(event:Event):void{
//???? trace("cancelHandler: " + event);
??? }
???
??? private function completeHandler(event:Event):void {
???? var file:File = File(event.target);
???? trace("文件格式：" + file.type);??? //文件格式：.gif
???? trace("文件格式(没点，推荐使用的)：" + file.extension);??? //文件格式(没点，推荐使用的)：gif
???? trace("文件创建者：" + file.creator);??? //文件创建者：null
???? trace(file.data);??? //
???? trace("是否为目录：" + file.isDirectory);??? //是否为目录：false
???? trace("是否隐藏：" + file.isHidden);??? //是否隐藏：false
???? trace("存储分区空间总大小(字节)：" + file.spaceAvailable);??? //存储分区空间总大小(字节)：148634128384
??? }
???
??? private function ioErrorHandler(event:IOErrorEvent):void {
???? trace("错误信息: " + event);
??? }
???
??? private function securityErrorHandler(event:SecurityErrorEvent):void {
???? trace("securityErrorHandler: " + event);
??? }
???
?? ]]>
</fx:Script>
<mx:Button x="300" y="50" label="远程文件下载"
????? click="downLoad('http://www.google.cn/intl/zh-CN/images/logo_cn.gif');"/>
</s:WindowedApplication>
?
?
http://blog.csdn.net/liwei3324/article/details/5770672
