UIButton flashing animation

Question

I was wondering if it was possible to apply a flashing animation to a UIButton. I have searched but only found the code for a pulse animation which changes the size of my UIButt

Answer 1

Reading all the answers so far I found following solution. It repeats a number of times and does the job for me.

CGFloat oldAlpha = v.alpha;
CGFloat minAlpha = 0.2;
enum UIViewAnimationOptions options = UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionAutoreverse | UIViewAnimationOptionCurveEaseInOut;

[UIView animateWithDuration:.3 delay:0.3 options:options animations:^{
    [UIView setAnimationRepeatCount:4];
    v.alpha = minAlpha;
}
completion:^(BOOL finished) {
    v.alpha = oldAlpha;
}];