I am displaying a ticker at the bottom of a view (think of a news channel s headlines ticker bar) in the form of a horizontal scrollview. It works correctly when I set the repeatCount to infinite but I want to be able to do some other functionality when the animation starts and stops instead. However, after reading the documentation and many examples online, I can t get setAnimationWillStartSelector/setAnimationDidStopSelector to respond.

Here s my code:

- (void)animateView {    
[UIScrollView setAnimationDelegate:self];    
[UIScrollView setAnimationWillStartSelector:@selector(animationStart:context:)];    
[UIScrollView setAnimationDidStopSelector:@selector(animationStop:finished:context:)];    
[UIScrollView beginAnimations:@"pan" context:nil];    
[UIScrollView setAnimationDuration:10.0f];    
[UIView setAnimationRepeatCount:1];    
[UIView setAnimationBeginsFromCurrentState:YES];    
[UIScrollView setAnimationCurve:UIViewAnimationCurveLinear];    
tickerScrollView.contentOffset = CGPointMake(textLabelRect.size.width,0);    
[UIScrollView commitAnimations];    
}    
- (void)animationStart:(NSString *)animationID context:(void *)context {    
NSLog(@"animationWillStart");    
}
- (void)animationStop:(NSString *)animationID finished:(BOOL)finished context:(void *)context {    
NSLog(@"animationDidStop");    
[self animateView];    
}

At the moment this code is in my UIViewController subclass. However, I have also tried putting it all in my app delegate as well, whilst also changing the setAnimationDelegate obviously. I ve tried using various animationDurations, repeatCounts, etc but still no luck.

Would really appreciate any help. Thanks