如何在Swift中以编程方式创建UISplitViewController

Question

有没有人能帮我解释一下如何在Swift中以编程方式创建UISplitViewController。在我的应用程序中，我想应用iPhone设备和iPad的支持功能。如果应用程序在iPhone上运行，则使用单个控制器，但如果应用程序在iPad上运行，则使用具有现有视图控制器的UISplitViewController。

我已经尝试过了，但它总是产生黑屏。以下是我的代码：

if UIDevice.current.userInterfaceIdiom == .pad {

    let spliterVC = UISplitViewController()
    let homeNavControler = mainStoryboard.instantiateViewController(withIdentifier: "homeViewController") as! HomeViewController

    let secondVC = mainStoryboard.instantiateViewController(withIdentifier: "secondViewController") as! SecondViewController
    spliterVC.viewControllers = [homeNavControler,secondVC]
    appdelegate.window?.rootViewController = spliterVC
}

- Dodi

Answer 1

如果你想使用navigationController来实现，可以尝试以下方法：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
    if UIDevice.current.userInterfaceIdiom == .pad {
        self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
        self.window!.backgroundColor = UIColor.whiteColor()
        var splitViewController =  UISplitViewController()
        var homeViewController = HomeViewController()
        var secondViewController = SecondViewController()
        var homeNavigationController = UINavigationController(rootViewController:homeViewController)
        var secondNavigationController = UINavigationController(rootViewController:secondViewController)
        splitViewController.viewControllers = [homeNavigationController,secondNavigationController]
        self.window!.rootViewController = splitViewController
        self.window!.makeKeyAndVisible()
        return true
    } else {
        // use single controller for iPhone and return that controller
    }
}

- Bhautik Ziniya