Read ByteArray from Javascript in Flex AS function

Question

I need to pass ByteArray from Javascript function to Flex Actionscript function. Have tried using the below JS:

function deviceResp(s){ 
    var obj = document.getElementById('smera');
    obj.deviceRespFx(s);    
}

My AS function :

public function imageRespFxs(value:String):void{
    Alert.show(value.length);
}

EDIT: Callback Function is loaded on "creationComplete"

   public function initDevice():void{                  
                               ExternalInterface.addCallback("deviceRespFx",imageRespFxs);

        }

As the above method is inturn converting a byte array to a String so there is a loss of data, could any one please assist on how to pass a Byte Array from JS to AS function.

Answer 1

All thanks to Sam DeHaan,

Have finally managed to get it working with Base64 as hinted by Sam comments.

here is the peice of code might be helpful for others:

Firstly in my Java Code I convert the Image into Base64 String like this :

  private String convertBase64String(BufferedImage image){

    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    Base64OutputStream bi64 = new Base64OutputStream(baos);
    try{
    ImageIO.write(imgRegistration1, "png",bi64);
    baos.flush();               
    String data = baos.toString("UTF-8");
    return data;
    }catch(Exception e)
    {
        e.printStackTrace();
    }
    return null;

}

and I send this to FLex AS method and Decode the Same like this:

  import mx.utils.Base64Decoder;
  private var base64Dec:Base64Decoder;
  public function imageRespFxs(value:String):void{                
    var byteArr:ByteArray;
            base64Dec = new Base64Decoder();
            base64Dec.decode(value);
            byteArr = base64Dec.toByteArray();
            imgId.load(byteArr);

        }

Thanks