Question

I have a date picker.

After choosing a time from this I would like to get the dates of the next 64 Mondays.

How would I go about writing a method to take a date and return an NSArray of NSDates for the next 64 Mondays from that date

for e.g.
I picked time 6:45 pm from date picker then I want to fetch next 64 mondays with there time set to that time.

Answer 1

Example (ARC):

NSDate *pickerDate = [NSDate date];
NSLog(@"pickerDate: %@", pickerDate);

NSDateComponents *dateComponents;
NSCalendar *calendar = [NSCalendar currentCalendar];

dateComponents = [calendar components:NSWeekdayCalendarUnit fromDate:pickerDate];
NSInteger firstMondayOrdinal = 9 - [dateComponents weekday];
dateComponents = [[NSDateComponents alloc] init];
[dateComponents setDay:firstMondayOrdinal];
NSDate *firstMondayDate = [calendar dateByAddingComponents:dateComponents toDate:pickerDate options:0];

dateComponents = [[NSDateComponents alloc] init];
[dateComponents setWeek:1];

for (int i=0; i<64; i++) {
    [dateComponents setWeek:i];
    NSDate *mondayDate = [calendar dateByAddingComponents:dateComponents toDate:firstMondayDate options:0];
    NSLog(@"week#: %i, mondayDate: %@", i, mondayDate);
}

NSLog output:

pickerDate: 2011-12-09 20:38:25 +0000

week#: 0, mondayDate: 2011-12-12 20:38:25 +0000

week#: 1, mondayDate: 2011-12-19 20:38:25 +0000

week#: 2, mondayDate: 2011-12-26 20:38:25 +0000

week#: 3, mondayDate: 2012-01-02 20:38:25 +0000

-the remaining 60 here-