如何在聚焦时修复UISearchController搜索栏的大小？

Question

我正在尝试在一个小的弹出屏幕中使用UITableView实现UISearchController，如下所示：Image displaying a popup with a UITableView and UISearchController。但是，将搜索栏聚焦后，它会向上移动并变宽，如下所示：Image displaying a glitched search bar。我发现了有关此问题的另一篇文章here，但是公认的解决方案似乎无法解决该问题。作为参考，我正在使用全屏显示的模式搜索。有一个内容视图，其中对tableView和titleLabel进行了子视图。这是弹出视图控制器的相关代码。

@IBOutlet weak var tableView: UITableView!
@IBOutlet weak var titleLabel: UILabel!

var items = ["Test", "oewrghp", "wopqet", "vbsjadsf", "rweoghp", "bmwehth", "pqeojnh"]
var filteredItems = [String]()
let searchController = UISearchController(searchResultsController: nil)

override func viewDidLoad() {
    super.viewDidLoad()

    let tapGesture = UITapGestureRecognizer(target: self, action: #selector(dismissTapGesture(gesture:)))
    view.addGestureRecognizer(tapGesture)
    view.backgroundColor = UIColor(displayP3Red: 0, green: 0, blue: 0, alpha: 0.3)

    searchController.searchResultsUpdater = self
    searchController.hidesNavigationBarDuringPresentation = false
    searchController.searchBar.barTintColor = .white
    searchController.searchBar.backgroundColor = .clear
    searchController.searchBar.delegate = self
    searchController.obscuresBackgroundDuringPresentation = false

    titleLabel.text = "Search"

    tableView.tableHeaderView = searchController.searchBar
    tableView.delegate = self
    tableView.dataSource = self
    tableView.reloadData()
    tableView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:))))

    // Do any additional setup after loading the view.
}

Answer 1

使用UISearchBar代替UISearchController

类似：

let searchBar = UISearchBar(frame: CGRect(x: 0, y: 0, width: tableView.frame.size.width, height: 44))