EndpointInterface service = ServiceAuthGenerator.createService(EndpointInterface.class);
    MediaType mediaType = MediaType.parse("multipart/form-data; boundary=---011000010111000001101001");
    RequestBody body = RequestBody.create(mediaType,file);
    //RequestBody fileBody = RequestBody.create(MediaType.parse("image/jpg"), file);
    Call<JSONObject> call = service.uploadPhoto(body);
    call.enqueue(new Callback<JSONObject>() {

        @Override
        public void onResponse(Response<JSONObject> response, Retrofit retrofit) {
            Log.v("Upload->", response.message().toString());

        }

        @Override
        public void onFailure(Throwable t) {
            Log.e("Upload", t.getMessage());
        }
    });
}