swift - 更改 UISearchController View 的样式？

Question

问题:

如何在 tvOS 中更改 UISearchController 的颜色/主题/样式？

(看来我需要以某种方式设置 UIStatusBarStyle，因为 tvOS 中不存在 UISearchController 的 preferredStatusBarStyle 覆盖)

描述:

在我的 AppDelegate 中调用的方法以编程方式创建一个 searchNavigationController，顶部是一个 UISearchController，底部是我的自定义 UITableViewController 称为“searchResultsController”(SearchViewController)

func configueSearchController() -> UIViewController {

    let storyboard = UIStoryboard(name: "Search", bundle: nil)
    guard let searchResultsController = storyboard.instantiateViewController(withIdentifier: SearchViewController.storyboardIdentifier) as? SearchViewController else {
        fatalError("Unable to instatiate a SearchResultViewController from the storyboard.")
    }

    /*
     Create a UISearchController, passing the `searchResultsController` to
     use to display search results.
     */

    let searchController = UISearchController(searchResultsController: searchResultsController)
    searchController.searchResultsUpdater = searchResultsController
    searchController.searchBar.placeholder = NSLocalizedString("Enter keyword (e.g. Gastric Bypass)", comment: "")

    // Contain the `UISearchController` in a `UISearchContainerViewController`.
    let searchContainer = UISearchContainerViewController(searchController: searchController)
    searchContainer.title = NSLocalizedString("Search", comment: "")

    // Finally contain the `UISearchContainerViewController` in a `UINavigationController`.
    let searchNavigationController = UINavigationController(rootViewController: searchContainer)
    return searchNavigationController

}

上述方法的可视化表示图像:

我尝试过的:

我曾尝试通过不同的方法来改变样式，但没有一个能达到预期的结果。

这对搜索栏没有影响:

searchController.searchBar.searchBarStyle = .minimal //or .prominent or .default

这只会使搜索栏(实际输入区域黑色..黑色文本..):

searchController.searchBar.backgroundColor = .black

这只会使 UISearchController 的整个背景 View 变黑。一切都是黑色的，因此看不到键盘。

searchController.view.backgroundColor = .black

理想的解决方案是将主题从标准 .default 更改为 .dark。因为不仅背景颜色必须改变，边框和文本颜色也必须改变。

尝试实现 this solution :

//UISearchController
override var preferredStatusBarStyle: UIStatusBarStyle {
    return .lightContent
}

但是，tvOS 似乎不存在此覆盖。有什么理由吗？

Answer 1

对于所有希望在 tvOS 上使用 TabBarController 和 Storyboard实现此目的的人，我所做的是将容器 View 添加到我的 View Controller 并将选项卡栏 Controller 添加为子项。

class SearchController: UIViewController  {

    @IBOutlet var containerView: UIView!


    override func viewDidLoad() {
        super.viewDidLoad()

        let searchController = UISearchController.init(searchResultsController: nil)
        searchController.view.autoresizingMask = [.flexibleHeight, .flexibleWidth]
        searchController.view.frame = containerView.bounds        

        let searchContainer: UISearchContainerViewController = UISearchContainerViewController(searchController: searchController)

        // Finally contain the `UISearchContainerViewController` in a `UINavigationController`.
        let searchNavigationController = UINavigationController(rootViewController: searchContainer)
        searchNavigationController.navigationBar.isTranslucent = true
        searchNavigationController.navigationBar.tintColor = .black
        searchNavigationController.tabBarItem.title = "Search"

        containerView.addSubview(searchNavigationController.view)
        searchNavigationController.didMove(toParent: self)
    }
}