animsequence.m

- (void)animateProductImagesIn
{
    [self reset];
    
    CGFloat delayAmount = 0.2;
    NSUInteger num = [self.productImages count];
    for (int i=0; i < num; i ++)
    {
        UIImageView *view = [self.productImages objectAtIndex:i];
        
        CGFloat delay = delayAmount * i;
        [self animateProductImage:view withDelay:delay];
    }
}

- (void)animateProductImage:(UIImageView *)image withDelay:(CGFloat)delay
{
    __block UIImageView *theImage = image;
    [UIView animateWithDuration:0.3
                          delay:delay
                        options:UIViewAnimationOptionAllowUserInteraction
                     animations:^{
                            theImage.alpha = 1.0;
                        }
                     completion:nil];
}