android - Add photo to new ParseUser -

i'm using parse android. want add photo newly created parseuser. here sample code:

if(company.getbackgroundimage()!=null) {                  bitmap bitmap = bitmapfactory.decoderesource(c.getresources(),r.drawable.launcher);                 // convert byte                 bytearrayoutputstream stream = new bytearrayoutputstream();                 // compress image lower quality scale 1 - 100                 bitmap.compress(bitmap.compressformat.png, 100, stream);                 byte[] image = stream.tobytearray();                 // create parsefile                final parsefile file = new parsefile("androidbegin.png", image);                user.put("alfa1",file);             }              user.signupinbackground(new signupcallback(){                 @override                 public void done(parseexception arg0) {                     if (arg0 == null) {                           log.i("log_output", "data saved in sever");                     } else {                         log.e("log_output", arg0.getcode() + "data not saved in server");                      }                 }             }); 

the file isn't uploaded!

it isn't uploaded , error code -1; i'm doing signup phase, don't understand how create new user photo. i've converted file, in fact myimage byte[] , works simple parseobject. thanks

i not believe signup adds data.

what happens if do:

        user.signupinbackground(new signupcallback(){             @override             public void done(parseexception arg0) {                 if (arg0 == null) {                       user.put("alfa1",file);                     user.saveinbackground(new savecallback(parseexception e) {                         if (e != null) {                             log.e("log_output", "error saving user", e);                             return;                         }                          log.i("log_output", "data saved in sever");                      });                 } else {                     log.e("log_output", "error signing user", e);                  }             } 

if user logged in @ point in code, should omit signupinbackground.