https://velog.io/@charon/Android-%EC%96%B8%EC%96%B4-%EC%84%A4%EC%A0%95 sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getActivity());private void changeLanguage(String languageCode) { try { Locale locale = new Locale(languageCode); Locale.setDefault(locale); Configuration config = new Configuration(); config.setLocale(locale)..