Question

I am writing an Adobe Air app in HTML/JavaScript and I am trying to base64 encode an image so I can add it to and XML RPC request. I have tried many methods and nothing seems to work.

I see that actionscript has a Base64Encoder class that look like it would work, is there any way to utilize this in JavaScript?

Answer 1

Thanks @some for the link.

I used the btoa() function to base64 encode image data like this:

var loader = new air.URLLoader();
loader.dataFormat = air.URLLoaderDataFormat.BINARY;
loader.addEventListener(air.Event.COMPLETE,function(e){
var base64image = btoa(loader.data);
});
var req = new air.URLRequest('file://your_path_here');
loader.load(req);

I was trying to upload an image using metaWeblog.newMediaObject, but it turns out that the data doesn’t need to be base64 encoded, so the binary value was all that was needed.