获取当前月份有多少天以及获取日期各个组成部分

1.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

2.获取当前年份和月份和天数

<span style="font-family: 'Microsoft YaHei'; font-size: 16px;">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</span>