iOS: Get all dates in current week - ios

Question

I am trying to get all dates in the current week of a given date:
In the example below, the input is
2015-11-29 23:40:37 +0000
, so I would expect the output to be an array of dates from November 23 - November 29, but the actual output is November 30 - December 6.
-(NSArray *)datesForWeekOf : (NSDate *) date {
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDate *startOfWeek;
NSDate *endOfWeek;
NSTimeInterval interval;
[calendar rangeOfUnit:NSCalendarUnitWeekOfMonth startDate:&startOfWeek interval:&interval forDate:date];
endOfWeek = [startOfWeek dateByAddingTimeInterval:interval-1];
NSCalendar *gregorianCalendar = [[NSCalendar alloc] initWithCalendarIdentifier: NSCalendarIdentifierGregorian];
NSDateComponents *days = [[NSDateComponents alloc] init];
NSInteger dayCount = 0;
NSMutableArray *allDates = [NSMutableArray array];
while ( TRUE ) {
[days setDay: ++dayCount];
NSDate *date = [gregorianCalendar dateByAddingComponents: days toDate: startOfWeek options: 0];
[allDates addObject:date];
if ( [date compare: endOfWeek] == NSOrderedDescending )
break;
}
return allDates;
}

Answer 1

You can get all dates of this week and next week using following code:-
NSArray * allDatesOfThisWeek = [self daysThisWeek];
NSArray * allDatesOfNextWeek = [self daysNextWeek];
Following methods are used for calculating dates of this week:-
-(NSArray*)daysThisWeek
{
return [self daysInWeek:0 fromDate:[NSDate date]];
}
-(NSArray*)daysNextWeek
{
return [self daysInWeek:1 fromDate:[NSDate date]];
}
-(NSArray*)daysInWeek:(int)weekOffset fromDate:(NSDate*)date
{
NSCalendar *calendar = [NSCalendar currentCalendar];
//ask for current week
NSDateComponents *comps = [[NSDateComponents alloc] init];
comps=[calendar components:NSWeekCalendarUnit|NSYearCalendarUnit fromDate:date];
//create date on week start
NSDate* weekstart=[calendar dateFromComponents:comps];
NSDateComponents* moveWeeks=[[NSDateComponents alloc] init];
moveWeeks.weekOfYear=weekOffset;
weekstart=[calendar dateByAddingComponents:moveWeeks toDate:weekstart options:0];
//add 7 days
NSMutableArray* week=[NSMutableArray arrayWithCapacity:7];
for (int i=1; i<=7; i++) {
NSDateComponents *compsToAdd = [[NSDateComponents alloc] init];
compsToAdd.day=i;
NSDate *nextDate = [calendar dateByAddingComponents:compsToAdd toDate:weekstart options:0];
[week addObject:nextDate];
}
return [NSArray arrayWithArray:week];
}
If you want to get dates of next to next week from today, then pass weekOffset=2 like this:-
NSArray * allDatesOfNextToNextWeek = [self daysInWeek:2 fromDate:now];
If you want to get dates of previous week from today, then pass weekOffset=-1 like this:-
NSArray * allDatesOfPreviousWeek = [self daysInWeek:-1 fromDate:now];
Hope, this is what you're looking for. Any concern get back to me.