How do I set function scrollViewDidEndDecelerating using AKPickerView

[kanamookob]

I use UIScrollViewDelegate protocol and try this:

func scrollViewDidScroll(scrollView: UIScrollView) {
    self.pickerView.backgroundColor = UIColor.whiteColor()
}
func scrollViewDidEndDecelerating(scrollView: UIScrollView) {
    self.pickerView.backgroundColor = UIColor.clearColor()
}

but it's not work because scrollViewDidEndDecelerationg method will call when scroll end but AKPickerView will scroll automatic to title and call scrollViewDidScroll again.
How do I solve this ?

Thank you