ios获取当前时间年月日时分秒

  //获取当前时间
      NSDate *now = [NSDate date];
      NSLog(@”now date is: %@”, now);

          NSCalendar *calendar = [NSCalendar currentCalendar];
          NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit |                 NSSecondCalendarUnit;
          NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:now];
    
          int year = [dateComponent year];
          int month = [dateComponent month];
          int day = [dateComponent day];
          int hour = [dateComponent hour];
          int minute = [dateComponent minute];
          int second = [dateComponent second];

          NSLog(@”year is: %d”, year);
          NSLog(@”month is: %d”, month);
          NSLog(@”day is: %d”, day);
          NSLog(@”hour is: %d”, hour);
          NSLog(@”minute is: %d”, minute);
          NSLog(@”second is: %d”, second);