Android : How can i send multipart form data in web service with usertoken

I send multipartform data to webservice with post tokenid, im taking error message in webservice

please signin but i posted my tokenid and its coming fill.

My code below;

             conn = (HttpURLConnection) url.openConnection(); 
             conn.setDoInput(true); 
             conn.setDoOutput(true); 
             conn.setUseCaches(false); 
             conn.setRequestMethod("POST");

             conn.setRequestProperty("token", ""+token2);
             conn.setRequestProperty("type", "album");

             conn.setRequestProperty("platform", "android");
             conn.setRequestProperty("version", ""+versionName);
             conn.setRequestProperty("image", ""+imagepath);
             conn.setRequestProperty("Connection", "Keep-Alive");
             conn.setRequestProperty("ENCTYPE", "multipart/form-data");
             conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);