Question

问题：

如何更改UISearchController中tvOS的颜色/主题/风格？

（看来我需要以某种方式设置UIStatusBarStyle，因为tvOS UISearchController中的AppDelegate覆盖不存在

说明

在我的searchNavigationController中调用的方法，以编程方式创建一个UISearchController，其位于UITableViewController的最上方，而我的自定义searchResultsController名为“SearchViewController”（{ {1}}）

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

}

上述方法的直观表示形象：

preferredStatusBarStyle

我尝试了什么：

我试图通过不同的方法改变风格，但没有一种方法能达到预期的效果。

这对searchBar没有影响：

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

这只会使searchBar（实际输入区域为黑色..带黑色文字..）：

searchController.searchBar.backgroundColor = .black

这只会使UISearchController的整个背景视图变黑。一切都是黑色的，因此无法看到键盘。

searchController.view.backgroundColor = .black

理想的解决方案是从标准.default到.dark的主题更改。因为不仅必须改变背景颜色，而且边框和文字颜色也必须改变。

尝试实施：

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

然而，tvOS似乎不存在这种覆盖。有什么理由吗？

Answer 1

对于所有希望通过TabBarController和Storyboard在tvOS上实现此目标的人，我所做的就是将容器视图添加到我的视图控制器中，并将选项卡栏控制器作为子项添加。

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)
    }
}

Answer 2

有一个解决这个问题的方法，但是我真的不明白他们为什么不保持与iOS相同的系统。无论如何，将SearchBar样式更改为黑色的主要操作是将keyboardAppearance设置为暗，searchController的视图的背景颜色并设置searchBar的背景颜色白色。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    guard let win = window else {
        return true
    }



    if let tabController = win.rootViewController as? UITabBarController {
        tabController.viewControllers?.append(configueSearchController())
    }

    win.backgroundColor = UIColor.white
    win.makeKeyAndVisible()

    return true
}   
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: "")
    searchController.view.backgroundColor = UIColor.black
    searchController.searchBar.keyboardAppearance = UIKeyboardAppearance.dark
    searchController.searchBar.tintColor = UIColor.black
    searchController.searchBar.backgroundColor = UIColor.white
    searchController.hidesNavigationBarDuringPresentation = false
    searchController.obscuresBackgroundDuringPresentation = true
    searchController.searchBar.searchBarStyle = .minimal
    searchController.searchBar.sizeToFit()

    //searchResultsController.tableView.tableHeaderView = searchController.searchBar

    // Contain the `UISearchController` in a `UISearchContainerViewController`.
    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"
    return searchNavigationController

}

Answer 3

我不是tvOS的专家，但这是我发现的。我从Apple的UIKit Catalog: Creating and Customizing UIKit Controls示例代码开始。我注意到的第一件事是你上面提供的代码将searchResultsController实例化为SearchViewController，而Apple的示例代码将searchResultsController实例化为SearchResultsViewController。我假设你打算这样做。

在使用示例代码之后，我能够进行非常有限的样式更改。这是我最接近你想要达到的目标的截图。

这是影响这种变化的代码。

func packagedSearchController() -> UIViewController {
    // Load a `SearchResultsViewController` from its storyboard.
    let storyboard = UIStoryboard(name: "ViewControllerSamples", bundle: nil)
    guard let searchResultsController = storyboard.instantiateViewController(withIdentifier: SearchResultsViewController.storyboardIdentifier) as? SearchResultsViewController else {
        fatalError("Unable to instatiate a SearchResultsViewController 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. iceland)", comment: "")

    //** This is the part you are interested in **//
    searchResultsController.view.backgroundColor = .black
    searchController.view.backgroundColor = UIColor(red: 0.25, green: 0.25, blue: 0.25, alpha: 1.0)
    searchController.searchBar.backgroundColor = .white

    // 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
}

不幸的是，我无法将SearchController的视图设置为.black而不会在黑暗中丢失键盘。我查看并寻找解决消失的键盘问题的方法，认为必须有一种方式来设置键盘的样式，或者至少修改选择状态，一切都无济于事。我的失望在App Programming Guide for tvOS: Designing the Keyboard Experience的这一声明中达到了高潮;

内联键盘在一行上显示所有可能的输入。使用UISearchController创建可与第三方内容完全集成的键盘。但是，使用UISearchController时，很少有自定义选项。您无法访问文本字段本身，自定义特征或添加输入附件。

我怀疑如果您能够获得对该键盘的引用，您可能会影响某些更改。话虽如此，到目前为止我还没有找到真正的解决方案。也许您可以将自定义inputAccessoryViewController附加到SearchController并以这种方式实现更改？

抱歉，我无法提供更多帮助。

更改UISearchController视图的样式？

问题：

说明

我尝试了什么：

3 个答案: