go here
http://onrails.org/articles/2007/11/27/flash-utils-bytearray-compressing\
-4-1mb-to-20k
<http://onrails.org/articles/2007/11/27/flash-utils-bytearray-compressin\
g-4-1mb-to-20k>
--- In flexcoders@yahoogroups.com, David Adams <dpad...@...> wrote:
>
> I've been having no luck getting Flex to decompress some data I've
> compressed using a tool based on zlib. I've tried the same code using
> AIR where I can specify the compression method and the data *does*
> decompress correctly. Below is a bit of code to give the idea:
>
> public function onComplete(event:Event) : void{
> var loader:URLLoader = URLLoader(event.target);
> //var info:String = loader.data;
> //trace(info);
> var ba:ByteArray = new ByteArray;
> ba = loader.data as ByteArray;
> ba.position = 0;
> // The next line of code fails with error #2058 every time using Flex.
> // Under AIR - you can get it to work by specifying the
> decompression method as DEFLATE.
> ba.uncompress();
> // For the AIR application, the line above is
> // ba.uncompress(CompressionAlgorithm.DEFLATE);
> var bytes:String = bytes = ba.toString();
> Alert.show(bytes.toString()); // AIR shows the original string,
> Flex never gets this far.
> }
>
> A couple of questions:
>
> * Does it matter what MIME type is set on the Web server for the
> content? If so, what MIME type is likely to work.
>
> * What decompression method exactly does the Flash player support?
> I've read "deflate" - which AIR seems to handle when I specify
> DEFLATE.
>
> * Perhaps there's something messed up in my compression data - would
> someone be willing to post some kind of 'hello world' in plain text
> and compressed form that is known to work with ByteArray.uncompress()?
> From there, I can experiment and see if I can tinker with my
> compression settings (or switch compression libraries) until I get a
> match.
>
> Thanks in advance for any help.
>
