Blinking effect on UILabel

Question

I have a UILabel with background color as grey.

I want a blinking effect on this label like it should become a little white & then become gray and it should keep

Answer 1

This is how it worked for me. I adapted the answer of @flex_elektro_deimling

First parameter UIView.animateWithDuration is the total time of the animation (In my case I've set it to 0.5), you may set different values on the first and second (delay) to change the blinking speed.

    self.YOURLABEL.alpha = 0;
    UIView.animateWithDuration(
        0.5, 
        delay: 0.2, 
        options: UIViewAnimationOptions.Repeat | UIViewAnimationOptions.Autoreverse, animations: {
            self.YOURLABEL.alpha = 1
        },
        completion:nil)