Android and RoR Rest Services

In case this helps anyone else:
When you are doing multipart uploads from Android to Rails, you need to make sure that you tell the MultipartEntry to be Browser compatible:

MultipartEntity multipartContent = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
multipartContent.addPart("media_entry[media]", new FileBody(file));
multipartContent.addPart("media_entry[user_id]", sb1);

and now I'll get back to our new project. More to come when we release an alpha version.