iOS equivalent for Android View.GONE visibility mode

Question

I\'m developing an app for iOS and I\'m using the Storyboard with AutoLayout ON. One of my view controllers has a set of 4 buttons, and in certain circumstances i would like

Answer 1

add a height constraint to your view as follows:

then make an outlet for the height constraint in your viewController file as follows:

& then in your viewDidLoad method change constraint height to 0 as follows:

override func viewDidLoad() {
    super.viewDidLoad()
nsLcButtonHeight.constant = 0
}