Intl을 사용하여 한국어로 변경을 하였는데.. 숫자만 나와야하는데 1일,2일 이런식으로 나옵니다..

안녕하세요!

이상하네 플러그인 버전이 동일한지 확인 해주세요.

관계없이 아래 코드로 (calendarBuilder 파라미터) 자유롭게 커스터마이징 가능합니다.

class Calendar extends StatelessWidget {
  final DateTime focusedDay;
  final OnDaySelected onDaySelected;
  final bool Function(DateTime day) selectedDayPredicate;

  const Calendar({
    required this.focusedDay,
    required this.onDaySelected,
    required this.selectedDayPredicate,
    super.key,
  });

  @override
  Widget build(BuildContext context) {
    final defaultBoxDecoration = BoxDecoration(
      borderRadius: BorderRadius.circular(6.0),
      border: Border.all(
        color: Colors.grey[200]!,
        width: 1.0,
      ),
    );

    final defaultTextStyle = TextStyle(
      color: Colors.grey[600],
      fontWeight: FontWeight.w700,
    );

    return TableCalendar(
      locale: 'ko_KR',
      focusedDay: focusedDay,
      firstDay: DateTime(1800),
      lastDay: DateTime(3000),
      headerStyle: HeaderStyle(
        formatButtonVisible: false,
        titleCentered: true,
        titleTextStyle: TextStyle(
          fontSize: 16.0,
          fontWeight: FontWeight.w700,
        ),
      ),
      calendarBuilders: CalendarBuilders(
        defaultBuilder: (context, day, focusedDay) {
          return Container(
            margin: EdgeInsets.all(4.0),
            alignment: Alignment.center,
            decoration: defaultBoxDecoration,
            child: Text(
              day.day.toString(),
              style: defaultTextStyle,
            ),
          );
        },
      ),
      calendarStyle: CalendarStyle(
        isTodayHighlighted: true,
        defaultDecoration: defaultBoxDecoration,
        weekendDecoration: defaultBoxDecoration,
        selectedDecoration: defaultBoxDecoration.copyWith(
          border: Border.all(
            color: primaryColor,
            width: 1.0,
          ),
        ),
        todayDecoration: defaultBoxDecoration.copyWith(
          color: primaryColor,
        ),
        outsideDecoration: defaultBoxDecoration.copyWith(
          border: Border.all(
            color: Colors.transparent,
          ),
        ),
        defaultTextStyle: defaultTextStyle,
        weekendTextStyle: defaultTextStyle,
        selectedTextStyle: defaultTextStyle.copyWith(
          color: primaryColor,
        ),
      ),
      onDaySelected: onDaySelected,
      selectedDayPredicate: selectedDayPredicate,
    );
  }
}

감사합니다! 수정하였습니다