#1 Make sure that your FileReference object is always in scope, otherwise when it goes out of scope, the download just cancels itself and you don’t get an error out.
#2 If you try to download something not on your server, you get a security error.
Here is a simple example of a Flex app that downloads. Enter a url on your server in the TextInput to download. I took most of this code from the FileReference.download ASDocs. By the way, if you defined your FileReference inside the function, it doesn’t work (I believe this is due to #1). Good luck.
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" >
<mx:Script>
<![CDATA[
import flash.net.*;
private var downloadURL:URLRequest;
private var fileName:String = "SomeFile.gif";
private var file:FileReference;
public function myDownload(): void
{
downloadURL = new URLRequest();
downloadURL.url = ""> file = new FileReference();
configureListeners(file);
file.download(downloadURL, fileName);
}
private function configureListeners(dispatcher:IEventDispatcher):void {
dispatcher.addEventListener(Event.CANCEL, cancelHandler);
dispatcher.addEventListener(Event.COMPLETE, completeHandler);
dispatcher.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);
dispatcher.addEventListener(Event.OPEN, openHandler);
dispatcher.addEventListener(ProgressEvent.PROGRESS, progressHandler);
dispatcher.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
}
private function cancelHandler(event:Event):void {
trace.text += "\ncancelHandler: " + event;
}
private function completeHandler(event:Event):void {
trace.text += "\ncompleteHandler: " + event;
}
private function ioErrorHandler(event:IOErrorEvent):void {
trace.text += "\nioErrorHandler: " + event;
}
private function openHandler(event:Event):void {
trace.text += "\nopenHandler: " + event;
}
private function progressHandler(event:ProgressEvent):void {
var file:FileReference = FileReference(event.target);
trace.text += "\nprogressHandler name=" + file.name + " bytesLoaded=" + event.bytesLoaded + " bytesTotal=" + event.bytesTotal;
}
private function securityErrorHandler(event:SecurityErrorEvent):void {
trace.text += "\nsecurityErrorHandler: " + event;
}
]]>
</mx:Script>
<mx:TextInput id="urlToLoad" width="400" />
<mx:Button label="download file" click="myDownload()" />
<mx:TextArea id="trace" width="500" height="400" />
</mx:Application>
On 7/6/06 8:57 AM, "Ingeniero Javier Cruz" <[EMAIL PROTECTED]> wrote:
Hello, I've a little problem ....
I've to build an application that takes a file from the server an then let the user to download the file. An already read about the FileReference and FileReferenceList classes but I can't make my app works. I made a mxml application that define a Script section in witch I create a FileReference object but when a test the application it doesn't work.
I'd like to prube with a servlet but I don't know how to start.
If somebody can, please help me I will thank for a long long time. Or, if someone knows about a site with examples that can help me, I'll thank too.
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