iOS Swift 4 - 如何在 NavigationController 中推送 UISearchController

Question

所以我有以下设置。

InitialViewController(VC) -> NavigationController -> ViewController1(VC1) 包含一个 UISearchController，在新 Controller ViewController2(VC2) 中显示结果 -> 从单元格中单击 VC2 -> 启动 ViewController3 (VC3)

我需要关闭 VC3 并返回 VC1。但是，VC2 和 VC3 都不属于导航 Controller 堆栈的一部分。我几乎尝试了所有建议的替代方案，但没有效果。

如何将 UISearchcontroller 和结果推送到导航堆栈？

我在 VC1 中实例化我的 UISearchController，如下所示:

    searchController = UISearchController(searchResultsController: 
    searchResultsController)
    searchController!.searchResultsUpdater = searchResultsController
    searchController?.delegate = self
    searchController!.obscuresBackgroundDuringPresentation = true
    searchController!.searchBar.placeholder = "Search stocks"
    searchController?.hidesNavigationBarDuringPresentation = false
    definesPresentationContext = true
    searchController!.searchBar.delegate = searchResultsController
    //navigationItem.searchController = searchController
    navigationItem.hidesSearchBarWhenScrolling = false
    navigationItem.titleView = searchController?.searchBar
    definesPresentationContext = true

还有我的 searchResultsController:

extension WatchListTableViewController: UISearchResultsUpdating, UISearchBarDelegate {
    // MARK: - UISearchResultsUpdating Delegate
    func updateSearchResults(for searchController: UISearchController) {
        // TODO
        filterContentForSearchText(searchController.searchBar.text!)
    }
}
class WatchListTableViewController: UITableViewController {
    var stocks =  [String]()
    var filteredStocks = [String]()

    override func viewDidLoad() {
        super.viewDidLoad()
        stocks = ["Apple", "Google", "Microsoft", "Tesla"]
        // Uncomment the following line to preserve selection between presentations
        // self.clearsSelectionOnViewWillAppear = false

        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.
        // self.navigationItem.rightBarButtonItem = self.editButtonItem
    }

Answer 1

通过以下方式解决了这个问题:

删除了从 VC2 到 VC3 的 Storyboard Segue。

在 VC2 中 - 使用以下方法将 VC3 推送到导航堆栈:

self.presentingViewController?.navigationController?.pushViewController(vc, animated:true)