selectedBackgroundView
The view to use as the background for a selected cell.
Declaration
var selectedBackgroundView: UIView? { get set }Discussion
UITableViewCell adds the value of this property as a subview only when the cell has a selected state. It adds the selected background view as a subview directly above the background view (backgroundView) if it isn’t nil, or behind all other views. Calling setSelected(_:animated:) causes the selected background view to animate in and out with an alpha fade.
A background configuration is mutually exclusive with background views, so you must use one approach or the other. Setting a non-nil value for this property resets backgroundConfiguration to nil.