我试图使我的应用程序只是在纵向模式我使用navigationcontroller我得到这个错误我使用Xcode7和Swift 2和目标系统IOS 9.3
声明仅在文件范围内有效

extension UINavigationController {
            public override func supportedInterfaceOrientations() -> Int {
                return visibleViewController.supportedInterfaceOrientations()
            }
            public override func shouldAutorotate() -> Bool {
                return visibleViewController.shouldAutorotate()
            }
        }

        extension UITabBarController {
            public override func supportedInterfaceOrientations() -> Int {
                if let selected = selectedViewController {
                    return selected.supportedInterfaceOrientations()
                }
                return super.supportedInterfaceOrientations()
            }
            public override func shouldAutorotate() -> Bool {
                if let selected = selectedViewController {
                    return selected.shouldAutorotate()
                }
                return super.shouldAutorotate()
            }
        }

Thnx公司