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Answer 1

A:

You can get Monday to Friday dates this way:

NSDate* curDate = [NSDate date]; // Get current date
NSCalendar* calendar = [NSCalendar currentCalendar];// Init calendar
NSDateComponents* comps = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSWeekCalendarUnit|NSWeekdayCalendarUnit fromDate:curDate]; // Get necessary date components

    // Week days change from 1 to 7, Sunday is the 1st, Saturday - the last one.
for (int i = 2; i <= 6; i++){ 
    [comps setWeekday:i];
    NSDate *tDate = [calendar dateFromComponents:comps];
    NSLog(@"%@", tDate);
}

To determine which date to highlight (current date) you just need to check date's weekday component.

Edit: titleForHeaderInSection method may look like:

- (NSString*) tableView:(UITableView *)tableView titleForHeaderInSection:(int)section{
    NSDate* curDate = [NSDate date]; // Get current date
    NSCalendar* calendar = [NSCalendar currentCalendar];// Init calendar
    NSDateComponents* comps = [calendar components:NSYearCalendarUnit|NSMonthCalendarUnit|NSWeekCalendarUnit|NSWeekdayCalendarUnit fromDate:curDate]; // Get necessary date components

    // Week days change from 1 to 7, Sunday is the 1st, Saturday - the last one.
    if (tableView == monTable)
        [comps setWeekday:2];
    if (tableView == tueTable)
        [comps setWeekday:3];
    if (tableView == wedTable)
        [comps setWeekday:4];
    if (tableView == thuTable)
        [comps setWeekday:5];
    if (tableView == friTable)
        [comps setWeekday:6];

    NSDate *tDate = [calendar dateFromComponents:comps];
    NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease];
    [formatter setDateFormat:@"EEE, MMM d"];


    return [formatter stringFromDate:tDate];
}

Vladimir 2010-08-21 21:18:37

Ahh ok, but if I am using the code you provided in titleForHeaderInSection, how do I get it to go through each table and give it the correct date?For example, I have monTable, tueTable, wedTable etc. But how do I get it to assign the correct date to the correct table?

Josh Kahane 2010-08-21 21:51:48

for example you can set tag property to your tables (say, from 1 to five) and set weekday like this: [comps setWeekday:1 + table.tag];, or just 'it (table == monTable) [comps setWeekday:2]; etc for each table.

Vladimir 2010-08-21 21:57:38

Hmm, thanks for help, it all makes sense, but my app crashes when I add these if statements. I put your code inside the titleForHeaderInSection and added these of statements into the for loop.f(tableView == monTable) [comps setWeekday:2]; if(tableView == tueTable) [comps setWeekday:3]; if(tableView == wedTable) [comps setWeekday:4]; if(tableView == thuTable) [comps setWeekday:5]; if(tableView == friTable) [comps setWeekday:6];Also, would I not need to 'return' these if statements? If I try to do that, it throws up an error.

Josh Kahane 2010-08-21 22:11:33

What error do you get with crash? And you don't need for loop in this case - just put your if statements instead of it

Vladimir 2010-08-21 22:18:06

In those if-statements you just need to set appropriate weekday component value. after that (that is after all if-statements)- create nsdate object from comps and yes you'll need to format the date to an appropriate string value (using NSDateFormatter) and return that string.

Vladimir 2010-08-21 22:23:06

Hmm, no success, could you give an example please? I unfortunately don't quite have enough experience with NSDateComponents. Not quite sure what to try.Thanks for the help so far, really appreciated.

Josh Kahane 2010-08-22 10:10:40

My goodness it works wonderfully! Thank you so much, now I don't want to over ask for help, but on the same topic, linked with this, ho can I adjust these dates plus or minus 7 days? so i can look through the weeks.

Josh Kahane 2010-08-22 14:42:24

change 'week' property in comps :)

Vladimir 2010-08-22 14:51:22

My issue is though I can't do this with an IBAction as its declared inside titleForHeaderInSection. I have tried adjusting this, still unsuccessful, sorry you will have to be patient with me. :)Or more so my issue, what numbers can I use with setWeek: ? Naturally for weekDay its 1-7, but Im not so sure here even after checking the documentation.

Josh Kahane 2010-08-22 14:59:26

Have a look at rangeOfUnit:inUnit:forDate: method in NSCalendar class - you can get the range of weeks in month for current date with it

Vladimir 2010-08-22 16:14:57

Making excellent progress and learnt loads thanks Vladimir! One last bit of help though please! I have made some good progress on altering the week, so adding a week or going to the previous week. Using [comps setWeek: ] or an appropriate alternative method, how can i do this? I have got the button linked up nicely and a better understanding of how it works now but can't quite get it going.

Josh Kahane 2010-08-23 10:52:05

I rechecked docs - better way to change current week may be to use dateByAddingComponents:toDate:options: method of NSCalendar - have a look at it in reference (there's example there on how to use that method)

Vladimir 2010-08-23 11:11:40

Ahh this makes a lot of sense! Seems like a simple implementation of the code you provided. I edited my original post, check it out please.Ahh dont worry I understand, it was a calendar, declared as 'calendar' in your sample. Hmm, can't get it working.

Josh Kahane 2010-08-23 19:14:26

Dont worry its working now! I used setHour:168 (seven days) instead of setDay and it works! Thanks so much.

Josh Kahane 2010-08-23 19:45:14

Answer 2

A:

Also see:

http://github.com/billymeltdown/nsdate-helper

ceeit 2010-08-22 13:37:54

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