xcode - Swift:将自定义类分配给所有 UINavigationController 是否正确？

Question

这或多或少是我的 Main.storyboard 情况:

我的根 UITabBarController 有 5 个可能的选择。然后，我希望某些 UIViewController 可以旋转到横向，而我还希望其他一些 UIViewController 仅具有横向模式。所以我写了这个 file.swift:

class CustomNavigationController: UINavigationController, UINavigationControllerDelegate {

  override func shouldAutorotate() -> Bool {
    if (self.topViewController?.isKindOfClass(HomeViewController) != nil) {return false}
    else if (self.topViewController?.isKindOfClass(ServicesViewController) != nil) {return false}
    else if (self.topViewController?.isKindOfClass(PhotoGalleryViewController) != nil) {return false}
    else if (self.topViewController?.isKindOfClass(SelectMapViewController) != nil) {return false}
    else if (self.topViewController?.isKindOfClass(MapViewController) != nil) {return false}
    else {return true}
  }

}

class CustomTabBarController: UITabBarController, UITabBarControllerDelegate {
  override func shouldAutorotate() -> Bool {
    return (self.selectedViewController as! UINavigationController).shouldAutorotate()
  }
}

并且我已经为所有 UINavigationController 分配了同一个类
CustomNavigationController，而我已将 CustomTabBarController 类分配给 UITabBarController。结果是没有 View Controller 不旋转。这是因为我给他们分配了同一个类(class)吗？我应该为我拥有的每个 UINavigationController 创建一个自定义导航 Controller 类吗？

更新

我找到的部分解决方案如下，即使它有点复杂。我已经像这样修改了以前的文件:

class CustomNavigationController: UINavigationController, UINavigationControllerDelegate {

override func shouldAutorotate() -> Bool {
    return (self.topViewController?.shouldAutorotate())!
}

}

类 CustomTabBarController: UITabBarController, UITabBarControllerDelegate { 覆盖 func shouldAutorotate() -> Bool { 返回(self.selectedViewController as!UINavigationController).shouldAutorotate() }

然后，在允许旋转的 View Controller 中，我只需:

override func shouldAutorotate() -> Bool {
    return true
}

在不允许旋转的 View Controller 中，我有:

override func shouldAutorotate() -> Bool {
    return false
}

override func viewWillAppear(animated: Bool) {
    let value = UIInterfaceOrientation.Portrait.rawValue
    UIDevice.currentDevice().setValue(value, forKey: "orientation")
}

无论如何有一个小问题，因为将模式设置为纵向的动画不正确，这意味着屏幕的宽度没有调整。如果我从横向 View Controller 转到仅纵向 View Controller ，则 View Controller 框架不正确。我明白了

而不是这个:

Answer 1

在 AppDelegate 中试试这个

func application(application: UIApplication, supportedInterfaceOrientationsForWindow window: UIWindow?) -> UIInterfaceOrientationMask {
    if let rootController = self.window?.rootViewController as? UITabBarController {
        if let navigationController = rootController.selectedViewController as? UINavigationController {
            let controller = navigationController.topViewController!

            if controller.isKindOfClass(HomeViewController.classForCoder()) {
                return UIInterfaceOrientationMask.Portrait
            }
            if controller.isKindOfClass(ServicesViewController.classForCoder()) {
                return UIInterfaceOrientationMask.Portrait
            }
            if controller.isKindOfClass(PhotoGalleryViewController.classForCoder()) {
                return UIInterfaceOrientationMask.Portrait
            }
            if controller.isKindOfClass(SelectMapViewController.classForCoder()) {
                return UIInterfaceOrientationMask.Portrait
            }
            if controller.isKindOfClass(MapViewController.classForCoder()) {
                return UIInterfaceOrientationMask.Portrait
            }
        }
    }
    return UIInterfaceOrientationMask.All
}

更新:

此方法强制应用程序更改 ViewController 中的方向，该方向应仅在纵向(HomeViewController、ServicesViewController、PhotoGalleryViewController、SelectMapViewController、MapViewController)中:

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)
    let value = UIInterfaceOrientation.Portrait.rawValue
    UIDevice.currentDevice().setValue(value, forKey: "orientation")
}