创建新的视图控制器

Question

我正在尝试以编程方式创建新的视图控制器，而不是在Xcode上使用情节提要。我对编码非常陌生，不了解在框架所在的括号中必须输入的值。该代码全部位于应用程序委托中，请您帮忙。

    let layout = UICollectionViewFlowLayout()

    window = UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    window?.rootViewController = UINavigationController(rootViewController: Homecontroller(frame: -, collectionViewLayout: layout))

Answer 1

检查

window = UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    let layout = UICollectionViewFlowLayout()
     window?.rootViewController = UINavigationController(rootViewController: HomeController(collectionViewLayout: layout))

您的HomeController应该是这样的

class HomeController: UICollectionViewController {

override func viewDidLoad() {
    super.viewDidLoad()
   }
}