Ограничьте высоту UISearchBar в iOS 11

В iOS 11 высота панели UISearch увеличилась, но я хочу такой же высоты, как в iOS 10. Как это сделать? Я использую приведенный ниже код для создания searchController.

    searchController = UIUtils.searchControllerInitialize(self)
    searchController.searchResultsUpdater = self
    searchController.delegate = self
    searchController.searchBar.delegate = self

    viewTemp = UIView(frame: CGRect(x: 0.0, y: 64.0,width: UIScreen.main.bounds.size.width , height: 44))
    viewTemp.addSubview(self.searchController.searchBar)
    self.view.addSubview(viewTemp);


    class func searchControllerInitialize(_ forViewController: UIViewController) -> UISearchController  {
    let controller = UISearchController(searchResultsController: nil)
    controller.hidesNavigationBarDuringPresentation = true
    // This property dismiss the background the navigation bar
    controller.dimsBackgroundDuringPresentation = false
    controller.definesPresentationContext = true
    forViewController.definesPresentationContext = true
    controller.searchBar.sizeToFit()

    let topView: UIView = controller.searchBar.subviews[0] as UIView
    for subView in topView.subviews {
        if subView.isKind(of: NSClassFromString("UITextField")!) {
            (subView as! UITextField).returnKeyType = UIReturnKeyType.search
            (subView as! UITextField).enablesReturnKeyAutomatically = true
        }
    }

    let viewS = UIView(frame: CGRect(x: 0.0, y: 0.0,width: UIScreen.main.bounds.size.width , height: 64))
    viewS.backgroundColor = UIColor.DTColor()
    controller.view.addSubview(viewS)
    controller.hidesNavigationBarDuringPresentation = false

    if #available(iOS 11.0, *) {
        controller.searchBar.translatesAutoresizingMaskIntoConstraints = false
        controller.searchBar.heightAnchor.constraint(equalToConstant: 44).isActive = true
    }

    return controller
}