Objective c NSDate转换设置工作日

我有一个NSDate对象

*myDate

。我可以从这个日期获取星期几，我想将工作日设置为

整数c

，并仅在该周获取新的日期对象。

我搜索了它，找到了答案，这是代码

 NSDate *date = [NSDate date];
            NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
            [formatter setDateFormat:@"MMM dd, yyy"];
            date = [formatter dateFromString:string];

            NSCalendar *calendar = [NSCalendar currentCalendar];
            NSInteger units = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit |       NSWeekdayCalendarUnit;
            NSDateComponents *components = [calendar components:units fromDate:date];
            NSInteger day = [components day];
            NSInteger weekday = [components weekday]; // if necessary

  NSDateComponents *comps = [[NSDateComponents alloc] init];
                [comps setDay:1];
             NSDate   *newDate = [[NSCalendar currentCalendar] dateByAddingComponents:comps toDate:[NSDate date] options:0];
                NSLog(@"new date==%@",newDate);

这将返回第二天的日期