Question

I’m trying to update a UILabel that is counting down from the users birthdate to a later date. I’m trying to update the label so they can see it counting down but can’t seem to get it working. Advice is appreciated!

Here’s where I make the timer:

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
    [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(timeFormatted:) userInfo:nil repeats:NO];
}

and here is where I get the actual count down information…

- (NSString *)timeFormatted:(int)totalSeconds
{       
    NSTimeInterval theTimeInterval = [self numberOfSecondsToLive];

    NSCalendar *sysCalendar = [NSCalendar currentCalendar];

    NSDate *date1 = [[NSDate alloc] init];
    NSDate *date2 = [[NSDate alloc] initWithTimeInterval:theTimeInterval sinceDate:date1]; 

    unsigned int unitFlags = NSHourCalendarUnit | NSMinuteCalendarUnit | NSDayCalendarUnit | NSMonthCalendarUnit | NSYearCalendarUnit | NSSecondCalendarUnit;

    NSDateComponents *conversionInfo = [sysCalendar components:unitFlags fromDate:date1  toDate:date2  options:0];

  _numberofSeconds.text = [NSString stringWithFormat:@" %dyears:%dMonths:%ddays:%dhour:%dminutes:%dseconds",[conversionInfo year],[conversionInfo month], [conversionInfo day], [conversionInfo hour], [conversionInfo minute], [conversionInfo second]];

    [date1 release];
    [date2 release];
 } 

What happens is that it does show the correct countdown information, but it doesn’t update it.

Thank you in advance!

Answer 1

You started the timer with repeats:NO you want that to be repeats:YES to have the timer repeat.