17 / 09 / 12

获取当前月份有多少天以及获取日期各个组成部分

获取当前月份有多少天

NSCalendar *calendar = [NSCalendarcurrentCalendar]; NSRange range = [calendarrangeOfUnit:NSDayCalendarUnitinUnit:NSMonthCalendarUnitforDate:[NSDatedate]]; NSUInteger numberOfDaysInMonth = range.length;

numberOfDaysInMonth 即为当月的天数。
更多用法查看NSCalendar, NSDateComponents帮助文档

获取当前年份和月份和天数

NSCalendar *calendar = [NSCalendar currentCalendar]; unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit; NSDateComponents *components = [calendar components:unitFlags fromDate:[NSDate date]]; NSInteger iCurYear = [components year]; //当前的年份 NSInteger iCurMonth = [components month]; //当前的月份 NSInteger iCurDay = [components day]; // 当前的号数