Next Week Calculation - ios

Question

I have a requirement in which i have to calculate working days i.e from Monday to Friday. if i pass todays date that particular week start date (Monday's Date) and end date(Friday's Date) will be displayed. And i calculated using the below Code.
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd"];// you can use your format.
todayDate= [NSDate date];
NSCalendar *gregorian = [[NSCalendar alloc]initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *components = [gregorian components:NSWeekdayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:todayDate];
int dayofweek = [[[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:todayDate] weekday];// this will give you current day of week
[components setDay:([components day] - ((dayofweek) - 2))];// for beginning of the week.
NSDate *beginningOfWeek = [gregorian dateFromComponents:components];
NSDateFormatter *dateFormat_first = [[NSDateFormatter alloc] init];
[dateFormat_first setDateFormat:#"yyyy-MM-dd"];
NSString * dateString2Prev = [dateFormat stringFromDate:beginningOfWeek];
NSDate * weekstartPrev = [dateFormat_first dateFromString:dateString2Prev];
// NSLog(#"The start of the week %#",weekstartPrev);
startDate= [weekstartPrev dateByAddingTimeInterval:60*60*24*1];
//NSLog(#"The date plus one is %#", startDate);
//Week End Date
NSCalendar *gregorianEnd = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *componentsEnd = [gregorianEnd components:NSWeekdayCalendarUnit | NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit fromDate:todayDate];
int Enddayofweek = [[[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:todayDate] weekday];// this will give you current day of week
[componentsEnd setDay:([componentsEnd day]+(7-Enddayofweek)+1)];// for end day of the week
NSDate *EndOfWeek = [gregorianEnd dateFromComponents:componentsEnd];
NSDateFormatter *dateFormat_End = [[NSDateFormatter alloc] init];
[dateFormat_End setDateFormat:#"yyyy-MM-dd"];
NSString *dateEndPrev = [dateFormat stringFromDate:EndOfWeek];
NSDate *weekEndPrev = [dateFormat_End dateFromString:dateEndPrev];
endDate= [weekEndPrev dateByAddingTimeInterval: -86400.0];
NSDateFormatter *dateF = [[NSDateFormatter alloc] init];
[dateF setDateFormat:#"dd-MMM-yyyy"];
[dateF setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
[dateF setLocale:[NSLocale localeWithLocaleIdentifier:#"en_GB"]];
endDateString = [dateF stringFromDate:endDate]; //pass this date to time table view controller
NSLog(#"Start date %# and End date %# ",startDate, endDate);
NSDateFormatter *dateF = [[NSDateFormatter alloc] init];
[dateF setDateFormat:#"dd-MMM-yyyy"];
[dateF setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
[dateF setLocale:[NSLocale localeWithLocaleIdentifier:#"en_GB"]];
startDateString = [dateF stringFromDate:startDate];
NSLog(#"the date start %# ", startDateString);
Now My question is how can I calculate next week for example todays date is Tue 26 Aug 2014. I calculated the current week i.e from Mon 25 Aug 2014 TO Fri 29 Aug 2014 using the above code. how can I calculate next week i.e from 1st September 2014 (monday) To 5th September 2014 (Friday).

Answer 1

i have worked on the similar issues some weeks ago.
I created a category on NSDate. You can use the methods.
- (NSDate *)firstDayOfWeek
{
return [NSDate firstDayOfWeekFor:self];
}
+(NSDate *)firstDayOfWeekFor:(NSDate*)p_Date
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *weekdayComponents = [calendar components:NSWeekdayCalendarUnit fromDate:p_Date];
NSDateComponents *componentsToSubtract = [[NSDateComponents alloc] init];
if ([weekdayComponents weekday] == 1)
{
// dimanche, on soustrait 6 jours
[componentsToSubtract setDay:-6];
}
else
{
// autres jours, on soustrait le jour courant et on rajoute 2 (=lundi)
[componentsToSubtract setDay:(-[weekdayComponents weekday] + 2)];
}
return [calendar dateByAddingComponents:componentsToSubtract toDate:[p_Date withoutTime] options:0];
}
- (NSDate *) dateByAddingDays:(NSInteger)p_Days
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [[NSDateComponents alloc] init];
[components setDay:p_Days];
return [calendar dateByAddingComponents:components toDate:self options:0];
}