set NSTimer time to NavigationBar label - ios

Question

I want to display remaining time from my NSTimer in NavigationItem title, that's why I can't create outlet for it.
My code is from this question NSTimer problem:
#interface MyController : UIViewController
{
UILabel * theLabel;
#private
NSTimer * countdownTimer;
NSUInteger remainingTicks;
}
#property (nonatomic, retain) IBOutlet UILabel * theLabel;
-(IBAction)doCountdown: (id)sender;
-(void)handleTimerTick;
-(void)updateLabel;
#end
#implementation MyController
#synthesize theLabel;
-(IBAction)doCountdown: (id)sender
{
if (countdownTimer)
return;
remainingTicks = 60;
[self updateLabel];
countdownTimer = [NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector: #selector(handleTimerTick) userInfo: nil repeats: YES];
}
-(void)handleTimerTick
{
remainingTicks--;
[self updateLabel];
if (remainingTicks <= 0) {
[countdownTimer invalidate];
countdownTimer = nil;
}
}
-(void)updateLabel
{
theLabel.text = [[NSNumber numberWithUnsignedInt: remainingTicks] stringValue];
}
#end
So, how can I put theLabel.text to label in NavigationBar?
I call method doCountdown in viewDidLoad:
[self doCountdown:nil];
Where is my fault? If I try to watch theLabel, NSLog says (null).
UPD:
And another stupid question. If I try to move label with NSTimer to the right, like here:
[self.navigationItem setTitle:#"Экзамен"];
self.theLabel = [[UILabel alloc] init];
[self doCountdown:nil];
UILabel *yourLabel = [[UILabel alloc]initWithFrame:CGRectMake(260,6,55,32)];
yourLabel.text = self.theLabel.text;
[self.navigationController.navigationBar addSubview:yourLabel];
my timer doesn't start, it shows initial time at label and nothing more.

Answer 1

The label is null because you don't create it anywhere.
In your viewDidLoad you should create it and add to navigation item's title view, e.g. like this:
self.theLabel = [[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 30)] autorelease];
self.navigationItem.titleView = self.theLabel;
Don't forget to release theLabel in dealloc.