fade in, fade out animation to uilabel - objective-c

Question

i have a label that i want to fade in and then to fade out.
here is my code:
-(void) fadein
{
scoreLabel.alpha = 0;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[UIView setAnimationDuration:2];
scoreLabel.alpha = 1;
[UIView commitAnimations];
[UIView setAnimationDidStopSelector:#selector(animationDidStop:finished:context:)];
}
-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2];
scoreLabel.alpha = 0;
[UIView commitAnimations];
}
from this code i get this situation: my label is fade in and then i don't see the fadeout animation.
how can i fix it?

Answer 1

-(void) fadein
{
scoreLabel.alpha = 0;
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
//don't forget to add delegate.....
[UIView setAnimationDelegate:self];
[UIView setAnimationDuration:2];
scoreLabel.alpha = 1;
//also call this before commit animations......
[UIView setAnimationDidStopSelector:#selector(animationDidStop:finished:context:)];
[UIView commitAnimations];
}
-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context {
{
[UIView beginAnimations:nil context:nil];
[UIView setAnimationDuration:2];
scoreLabel.alpha = 0;
[UIView commitAnimations];
}

Answer 2

The call to setAnimationDidStopSelector should be before commit the animations:
[UIView beginAnimations:nil context:nil];
[UIView setAnimationCurve:UIViewAnimationCurveEaseIn];
[UIView setAnimationDuration:2];
[UIView setAnimationDidStopSelector:#selector(animationDidStop:finished:context:)];
scoreLabel.alpha = 1;
[UIView commitAnimations];