Compare NSDate for Today or Yesterday

Posted by elementsense on Stack Overflow See other posts from Stack Overflow or by elementsense
Published on 2010-05-23T22:55:03Z Indexed on 2010/05/23 23:00 UTC
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Hi

Well I guess this has been asked a thousand times, but for some reason the answeres dont really work or had other problems,....

Anyway here is what I have "working" :

    NSCalendar *calendar = [NSCalendar currentCalendar];    
    NSDate *currentDate = [NSDate date];
    NSDateComponents *comps = [[NSDateComponents alloc] init];
    // set tomorrow (0: today, -1: yesterday)
    [comps setDay:0];
    NSDate *dateToday = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
    [comps setDay:-1];
    NSDate *dateYesterday = [calendar dateByAddingComponents:comps toDate:currentDate options:0];
    [comps release];


NSString *todayString = [self.dateFormatter stringFromDate:dateToday] ;
NSString *yesterdayString = [self.dateFormatter stringFromDate:dateYesterday] ;
NSString *refDateString = [self.dateFormatter stringFromDate:info.date];

if ([refDateString isEqualToString:todayString]) 
{
    cell.title.text =  @"Today";
} else if ([refDateString isEqualToString:yesterdayString]) 
{
    cell.title.text =  @"Yesterday";
} else 
{
    cell.title.text =  [self.dateFormatter stringFromDate:info.date];
}

Now to the problem(s) :

That seems to be an awefull lot of code for just a date comparinson, is there an easier way ?

And the most important question is the release of all the objects. As might have guessed, I use this in a UITableViewController. I also have these lines in my code :

//[calendar release];
//[currentDate release];
//[dateToday release];
//[dateYesterday release];
//[todayString release];
//[yesterdayString release];
//[refDateString release];

The problem is that as soon that I uncomment one of these lines, my app crashes and I have no idea why ?! I hope someone can enlighten me here.

Thanks lot.

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