如何以編程方式快速修復搜索欄

Question

我以編程方式在ViewController中創建了一個搜索欄。 但是，當我向上滾動屏幕時，搜索欄會上升。

如何凍結搜索欄？

class searchbarTable:  UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchResultsUpdating {
    @IBOutlet var tableview: UITableView!

    let searchController = UISearchController(searchResultsController: nil)

    override func viewDidLoad() {
        searchController.searchResultsUpdater = self
        searchController.dimsBackgroundDuringPresentation = false
        definesPresentationContext = true
        self.tableview.tableHeaderView = searchController.searchBar
    }
}

Answer 1

您可以嘗試此操作，並在導航欄中設置搜索欄

self.navigationController?.searchDisplayController = searchController

要么

lazy var searchBar = UISearchBar(frame: CGRectZero)

override func viewDidLoad() {
    super.viewDidLoad()

    searchBar.placeholder = "Search"

    navigationItem.titleView = searchBar
}

要么

var leftNavBarButton = UIBarButtonItem(customView:Yoursearchbar)
  self.navigationItem.leftBarButtonItem = leftNavBarButton

要么

searchController.hidesNavigationBarDuringPresentation = false

當我們呈現還可以的時候它會隱藏導航欄

希望它對您有幫助:)