Change colour of dark grey highlight when holding down custom UIButton?

Question

I have a custom UIButton which is a cloud, transparent black and white .png file, with no down state, just one image. When tapping and holding the finger over it, i

Answer 1

You can write a custom button that does it

class ActionButton: UIButton {

  var originalBackgroundColor: UIColor!

  override var backgroundColor: UIColor? {
    didSet {
      if originalBackgroundColor == nil {
        originalBackgroundColor = backgroundColor
      }
    }
  }

  override var isHighlighted: Bool {
    didSet {
      guard let originalBackgroundColor = originalBackgroundColor else {
        return
      }

      backgroundColor = isHighlighted ? originalBackgroundColor.darken() : originalBackgroundColor
    }
  }