class WeekDaysToChinese { static String fromString(String weekday) { switch (weekday) { case 'Monday': return '周一'; case 'Tuesday': return '周二'; case 'Wednesday': return '周三'; case 'Thursday': return '周四'; case 'Friday': return '周五'; case 'Saturday': return '周六'; case 'Sunday': return '周日'; default: return '未知'; } } static String fromInt(int weekday) { switch (weekday) { case 1: return '周一'; case 2: return '周二'; case 3: return '周三'; case 4: return '周四'; case 5: return '周五'; case 6: return '周六'; case 7: return '周日'; default: return '未知'; } } }