ios - 如何旋转到只有一个 View Controller 的横向

Question

我用了下面的方法让它可行，但是没有用

override func viewDidLoad() {
    super.viewDidLoad()
    let value = UIInterfaceOrientation.landscapeLeft.rawValue
    UIDevice.current.setValue(value, forKey: "orientation")
}

override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
    return .landscapeLeft
}

override var shouldAutorotate: Bool {
    return true
}    

Answer 1

如果你想强制特定的 viewController 只旋转到横向然后在 AppDelega 文件中添加以下代码

public var orientationLock = UIInterfaceOrientationMask.all

    static var shared : AppDelegate {
        return UIApplication.shared.delegate as! AppDelegate
    }


    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
        return self.orientationLock
    }

    func lockDeviceOrientation(orientationLock: UIInterfaceOrientationMask, rotateOrientation:UIInterfaceOrientation) {
        AppDelegate.shared.orientationLock = orientationLock
        UIDevice.current.setValue(rotateOrientation.rawValue, forKey: "orientation")
    }

并在特定的 viewController 中添加以下代码，您希望强制仅在横屏中旋转

 override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        AppDelegate.shared.orientationLock = .landscapeLeft
    }