ios - 如何始终纵向加载应用程序？

Question

<分区>

Answer 1

您可以像这样在您的 appDelegate 中为方向创建一个扩展:

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


extension AppDelegate: MyAppDelegate {
    func application(_ application: UIApplication,
                     supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
        return shouldRotate ? .allButUpsideDown : .portrait
    }
}

在您想要允许旋转的 viewController 中，您应该在 viewDidLoad 方法中实现它:

let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.shouldRotate = true

并在 viewWillDisappear 上再次删除它:

override func viewWillDisappear(_ animated: Bool) {
    UIDevice.current.setValue(UIInterfaceOrientation.portrait.rawValue, forKey: "orientation")

    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    appDelegate.shouldRotate = false
}