Trying to override "selected" in UICollectionViewCell Swift for custom selection state
And for Swift 3.0:
override var isSelected: Bool { didSet { alpha = isSelected ? 0.5 : 1.0 }}
Figured it out by stepping into code. The problem was that the super.selected wasn't being modified. So I changed the code to this:
override var selected: Bool { get { return super.selected } set { if newValue { super.selected = true self.imageView.alpha = 0.5 println("selected") } else if newValue == false { super.selected = false self.imageView.alpha = 1.0 println("deselected") } }}Now it's working.
Try this one.
override var selected: Bool { didSet { self.alpha = self.selected ? 0.5 : 1.0 }}