时间解析(NSDate、NSCalendar、NSDateComponents):1、使用NSCalendar和NSDateComponents解析日期,直接获取到年月日时分秒。获取到年月日时分秒其实都是通过NSDateComponents来解析的[calendar components:(NSCalendarUnitYear |NSCalendarUnitMonth | NSCalendarUnitDay) fromDate:date];NSDate *date = [NSDate date];NSCalendar *calendar = [NSCalendar currentCalendar];NSDateComponents *comps;// 年月日获得comps = [cal...