How to Animate Fade of a View Simultaneously with Frame of Another View

Hi,

I have two views in my view hierarchy searchButtonView and searchBarView. I am trying to fade out the searchButtonView while animating the change in the frame of searchBarView simultaneously within a UIView.animate block. However, when I run the app, the frame of searchBarView resizes correctly while the alpha of searchButtonView does not animate to 0 as expected.

How can I fix this so that both view animate simultaneously?

Please see my code below.

Thank you

class MovieTitlesViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        
    }
    
    var searchButtonView: UIView!
    var searchBarView: UIView!
    
    override func viewDidLayoutSubviews() {
        createSearchButtonView()
        createSearchBarView()
    }
    
    func createSearchButtonView() {
        searchButtonView = UIView(frame: CGRect(x: 23, y: view.safeAreaInsets.top, width: 48, height: 48))
        
        let searchImageView = UIImageView(image: UIImage(named: "Search Icon")!)
        searchImageView.frame = CGRect(x: searchButtonView.frame.width / 2 - 16,
                                       y: searchButtonView.frame.height / 2 - 16,
                                       width: 32,
                                       height: 32)
        
        searchButtonView.addSubview(searchImageView)
        
        searchButtonView.backgroundColor = .blue
        searchButtonView.layer.cornerRadius = 24
        searchButtonView.layer.borderColor = UIColor.gray.cgColor
        searchButtonView.layer.borderWidth = 0.5
        
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(tappedSearchView))
        tapGesture.numberOfTapsRequired = 1
        searchButtonView.addGestureRecognizer(tapGesture)
        searchButtonView.isUserInteractionEnabled = true
        
        view.addSubview(searchButtonView)
    }
    
    func createSearchBarView() {
        searchBarView = UIView(frame: CGRect(x: 23,
                                             y: view.safeAreaInsets.top,
                                             width: 0,
                                             height: 48))
        
        searchBarView.backgroundColor = .red
//        searchBarView.backgroundColor = UIColor(red: 217/255, green: 217/255, blue: 217/255, alpha: 1.0)
        
        searchBarView.layer.cornerRadius = 24
        searchBarView.layer.borderColor = UIColor.gray.cgColor
        searchBarView.layer.borderWidth = 0.5
        
        view.addSubview(searchBarView)
    }
    
    func animateExpandSearchView() {
        UIView.animate(withDuration: 0.25, delay: 0.0, options: .curveEaseInOut) {
            self.searchButtonView.alpha = 0.0
            self.searchBarView.frame = CGRect(x: 23, y: self.view.safeAreaInsets.top, width: UIScreen.main.bounds.width - 46, height: 48)
        }
    }
    
    @objc func tappedSearchView() {
        print("tapped search view")
        animateExpandSearchView()
    }
}