Where to highlight UICollectionViewCell: delegate or cell?

Question

According to the Collection View Programming Guide one should handle the visual state of the cell highlights in the UICollectionViewDelegate. Like this:

Answer 1

Notice that UICollectionViewCell has a selectedBackgroundView property. By default, it's nil. Just create a view for this property, and it will appear when the user touches the cell.

override func awakeFromNib() {
    super.awakeFromNib()

    let view = UIView(frame: contentView.bounds)
    view.isUserInteractionEnabled = false
    view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    view.backgroundColor = UIColor(white: 0.94, alpha: 1.0)
    selectedBackgroundView = view
}