1. SharedPreferencesSP 사용법은 아주 간단하다. 아래 코드 참고.class SharedPreferencesFragment : Fragment() { private var _binding: FragmentFirstBinding? = null private val binding get() = _binding!! override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?, ): View { _binding = FragmentFirstBinding.inflate(layoutInflater) load..