iOS 獲取當前月份的天數(轉)

在這里我很鄙視百度，尼瑪 竟然每一個我想要的結果。。。最后還是用google弄到的。日前又需要自己以后慢慢研究

1.?獲取當前月份有多少天

NSCalendar?*calendar = [NSCalendarcurrentCalendar];

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NSRange?range = [calendarrangeOfUnit:NSDayCalendarUnitinUnit:NSMonthCalendarUnitforDate:[NSDatedate]];

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NSUInteger?numberOfDaysInMonth = range.length;

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numberOfDaysInMonth 即為當月的天數。更多用法查看NSCalendar，?NSDateComponents幫助文檔

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2.?獲取當前年份和月份和天數

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NSCalendar?*calendar = [NSCalendar?currentCalendar];

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unsigned?unitFlags =?NSYearCalendarUnit?|?NSMonthCalendarUnit?|??NSDayCalendarUnit;

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NSDateComponents?*components = [calendar?components:unitFlags?fromDate:[NSDate?date]];

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NSInteger?iCurYear = [components?year];??//當前的年份

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NSInteger?iCurMonth = [components?month];??//當前的月份

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NSInteger?iCurDay = [components?day];??//?當前的號數