Animación UIView didEndSelector: ¿método que no se llama?

Question

Tengo una vista UIV que se ha movido a la vista. Después de 2 segundos, me gustaría que UIView vuelva a estar fuera de la vista. ¿Cómo hago esto? He intentado lo siguiente, pero no funciona :(

He configurado el NSLog, pero no parece que esté terminando y luego llame al método loadingViewDisappear: :(

Gracias.

...
    [UIView beginAnimations:@"AnimateIn" context:nil];
    [UIView setAnimationCurve: UIViewAnimationCurveEaseOut];
    [UIView setAnimationDuration: 0.7f];
    [UIView setAnimationDidStopSelector:@selector(loadingViewDisappear:finished:context:)];
    loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
    [UIView commitAnimations];
}

- (void)loadingViewDisappear:(NSString *)animationID finished:(NSNumber *) finished context:(void *) context {
    NSLog( (finished ? @"YES!" : @"NO!" ) );
    if ([animationID isEqualToString:@"AnimateIn"] && finished) {
        [UIView beginAnimations:@"AnimateOut" context:nil];
        [UIView setAnimationCurve: UIViewAnimationCurveEaseIn];
        [UIView setAnimationDelay:2.0f];
        [UIView setAnimationDuration: 0.7f];
        loadingView.frame = CGRectMake(0, 480, 320, 80);
        [UIView commitAnimations];
        [loadingView removeFromSuperview];
    }
}

Answer 1

Debes configurar el delegado de animación:

[UIView beginAnimations:@"AnimateIn" context:nil];
[UIView setAnimationCurve: UIViewAnimationCurveEaseOut];
[UIView setAnimationDuration: 0.7f];

//Add this
[UIView setAnimationDelegate:self];

[UIView setAnimationDidStopSelector:@selector(loadingViewDisappear:finished:context:)];
loadingView.frame = CGRectMake(rect.origin.x, rect.origin.y - 80, rect.size.width, rect.size.height);
[UIView commitAnimations];