nsdate

创建一个时间格式化对象

    NSDateFormatter *datef = [[NSDateFormatter alloc] init];

     设定时间的格式

    [datef setDateFormat:@"yyyy-MM-dd"];

     将字符串转换为时间对象

NSDate *tempDate = [datef dateFromString:str];

 

 获取代表公历的Calendar对象

    NSCalendar *calenar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];

     定义一个时间段的旗标，指定将会获取指定的年，月，日，时，分，秒的信息

    unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit | NSWeekdayCalendarUnit;

     获取不同时间字段信息

    NSDateComponents *dateComp = [calenar components:unitFlags fromDate:date];

 

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NSString *cString = [[color stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] uppercaseString];

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转载于:https://www.cnblogs.com/zhaozhongpeng/p/4867879.html