UIView beginAnimations fails on selector

	[UIView beginAnimations:nil context:NULL];
	[UIView setAnimationDelay:4];
	[UIView setAnimationDuration:5];
	navigation.frame = CGRectOffset(navigation.frame, 0, 430);
	[UIView commitAnimations];
Code block above works fine when called manually on viewDidLoad function or with button tap. But when i try to call that block within a selector function like below, animation doesnt effect. Object jumps to position. What would cause to that?

	if ([delegate respondsToSelector:@selector(carouselDidEndScrollingAnimation:)])
	{
		[delegate carouselDidEndScrollingAnimation:self];
	}


    - (void) carouselDidEndScrollingAnimation:(iCarousel *)carousel{
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:5];
        navigation.frame = CGRectOffset(navigation.frame, 0, 430);
        [UIView commitAnimations];
    }


[icarousel github ][1]


  [1]: https://github.com/nicklockwood/iCarousel
UIView beginAnimations fails on selector
===


	[UIView beginAnimations:nil context:NULL];
	[UIView setAnimationDelay:4];
	[UIView setAnimationDuration:5];
	navigation.frame = CGRectOffset(navigation.frame, 0, 430);
	[UIView commitAnimations];
Code block above works fine when called manually on viewDidLoad function or with button tap. But when i try to call that block within a selector function like below, animation doesnt effect. Object jumps to position. What would cause to that?

	if ([delegate respondsToSelector:@selector(carouselDidEndScrollingAnimation:)])
	{
		[delegate carouselDidEndScrollingAnimation:self];
	}


    - (void) carouselDidEndScrollingAnimation:(iCarousel *)carousel{
        [UIView beginAnimations:nil context:NULL];
        [UIView setAnimationDuration:5];
        navigation.frame = CGRectOffset(navigation.frame, 0, 430);
        [UIView commitAnimations];
    }


[icarousel github ][1]


  [1]: https://github.com/nicklockwood/iCarousel