一 12进制
NSDateFormatter *dateform = [[NSDateFormatter alloc]init];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"];
[dateform setLocale:locale];
dateform.dateFormat = @"hhmmss";
NSString *dateStr = [dateform stringFromDate:[NSDate date]];
二 24进制
NSDateFormatter *dateform = [[NSDateFormatter alloc]init];
dateform.dateFormat = @"hhmmss";
NSString *dateStr = [dateform stringFromDate:[NSDate date]];
三 年月日 星期
- (NSString *)getYears{
NSArray * arrWeek=[NSArray arrayWithObjects:@"星期日",@"星期一",@"星期二",@"星期三",@"星期四",@"星期五",@"星期六", nil];
NSDate *date = [NSDate date];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:
NSCalendarIdentifierGregorian];
NSDateComponents *comps = [[NSDateComponents alloc] init];
NSInteger unitFlags = NSCalendarUnitYear |
NSCalendarUnitMonth |
NSCalendarUnitDay |
NSCalendarUnitWeekday |
NSCalendarUnitHour |
NSCalendarUnitMinute |
NSCalendarUnitSecond;
comps = [calendar components:unitFlags fromDate:date];
NSInteger week = [comps weekday];
NSInteger year=[comps year];
NSInteger month = [comps month];
NSInteger day = [comps day];
NSString *dateStr=[NSString stringWithFormat:@"%ld年%ld月%ld日 %@",year,month,day,[arrWeek objectAtIndex:week-1]];
return dateStr;
}
