public void proceedUserResponse(Response<StackOverflowUser> response) { if(response != null) { if (response.isSuccess()) { if(response.body().getItems().size() > 0) { view.setUserData(response.body().getItems()); }else{ view.showEmptyUserList(R.string.error_empty_user_list); } } else { view.showUserDataError(R.string.error_no_response); } }else{ view.showUserDataError(R.string.error_no_response); } } }