禁用UINavigationController和UIViewController在Swift 4中的屏幕方向

Question

嗨我想停止在我的项目中的视图控制器之一的自动旋转。在下面的快照，

我有一个开始UINavigationController，然后UIViewController。我已经实现下面的代码以停止自转：

extension UINavigationController { 

    override open var shouldAutorotate: Bool { 
     get { 
      return false 
     } 
    } 

    override open var supportedInterfaceOrientations: UIInterfaceOrientationMask{ 
     get { 
      return UIInterfaceOrientationMask.landscape 
     } 
    }} 

class ViewController: UIViewController { 

    @IBOutlet weak var imageView: UIImageView! 
    override func viewDidLoad() { 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 
    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 

    override open var shouldAutorotate: Bool { 
     return false 
    } 

    override var supportedInterfaceOrientations: UIInterfaceOrientationMask 
    { 
     return .landscape 
    } 
    } 

但上面的代码似乎并没有打电话，没有服用任何影响。我正在使用Xcode 9和swift 4.0。 任何建议，将不胜感激。

问候， NEENA

Answer 1

创建一个类并将其设置为UINavigationController，然后在你的故事板使用这个新的类/ XIB

在您的分机：

class NavigationController: UINavigationController {  
    override var shouldAutorotate: Bool { 
     return topViewController?.shouldAutorotate ?? super.shouldAutorotate 
    } 

    override var supportedInterfaceOrientations: UIInterfaceOrientationMask { 
     return topViewController?.supportedInterfaceOrientations ?? super.supportedInterfaceOrientations 
    } 
} 

在你的控制器：

override var shouldAutorotate: Bool { 
    return false 
} 

override var supportedInterfaceOrientations: UIInterfaceOrientationMask { 
    return .portrait 
} 

Answer 2

我是有同样的问题。我查看了所有堆栈溢出，并尝试了许多解决方案，但都没有工作。我在苹果开发者论坛上发现了这个解决方案，它的功能就像一个魅力。

我在这里添加他们的解决方案，希望其他人在未来能够更容易地找到，给author以及链接到their post。

添加到您的AppDelegate文件：

func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask { 

    return self.orientationLock 

} 

struct AppUtility { 

    static func lockOrientation(_ orientation: UIInterfaceOrientationMask) { 

     if let delegate = UIApplication.shared.delegate as? AppDelegate { 

      delegate.orientationLock = orientation 

     } 

    } 

    static func lockOrientation(_ orientation: UIInterfaceOrientationMask, andRotateTo rotateOrientation:UIInterfaceOrientation) { 

     self.lockOrientation(orientation) 

     UIDevice.current.setValue(rotateOrientation.rawValue, forKey: "orientation") 

    } 

} 

添加到您要强制定向视图 - 控制：

override func viewDidAppear(_ animated: Bool) { 

    super.viewDidAppear(animated) 

    AppDelegate.AppUtility.lockOrientation(.portrait) 

} 

override func viewWillDisappear(_ animated: Bool) { 

    super.viewWillDisappear(animated) 

    AppDelegate.AppUtility.lockOrientation(.all) 

}