tvOS button update constraints on focus inside a Uiview?

Question

I have a custom uiView where it has two buttons. I just want to be able to change the height& width of the button when it becomes or leaves focus

override func didUpdateFocus(in context: UIFocusUpdateContext, with coordinator: UIFocusAnimationCoordinator) {


     if context.nextFocusedView == noButton{
         print("About to be a lot of no in here")
         coordinator.addCoordinatedAnimations({
self.yesButton.widthAnchor.constraint(equalToConstant: 360).isActive = true
self.yesButton.heightAnchor.constraint(equalToConstant: 140).isActive = true
self.yesButton.layoutIfNeeded()
         }) {
self.noButton.widthAnchor.constraint(equalToConstant: 400).isActive = true
self.noButton.heightAnchor.constraint(equalToConstant: 860).isActive = true
self.noButton.layoutIfNeeded()
         }



     }

     if context.nextFocusedView == yesButton{
         coordinator.addCoordinatedAnimations({
             self.noButton.widthAnchor.constraint(equalToConstant: 360).isActive = true
             self.noButton.heightAnchor.constraint(equalToConstant: 140).isActive = true
             self.noButton.layoutIfNeeded()
         }) {
             self.yesButton.widthAnchor.constraint(equalToConstant: 400).isActive = true
             self.yesButton.heightAnchor.constraint(equalToConstant: 160).isActive = true
             self.yesButton.layoutIfNeeded()
         }
     }

 }

I just can't figure out why I can't get this to change the button height/width. I know I'm doing something wrong(and pardon if stupid.

Answer 1

You need to call layoutIfNeeded() on your buttons after updating their constraints.