在 ModalView 中从底部推送 ViewController 全屏

Question

在我的应用程序中，我有一个 MainVC。从那里我 present 另一个 ViewControllerB 我想 push 在那里所以这就是我实现这个的方法：

let ViewControllerB = self.storyboard?.instantiateViewController(withIdentifier: "ViewControllerB") as! ViewControllerB
let navController = UINavigationController(rootViewController: communityVC)
self.present(navController, animated: true, completion: nil)

这正是我想要的效果。然而在 ViewControllerB 我还想 push 某个 ViewControllerC 全屏来自底部而不仅仅是内部modalView。我这样称呼：

let firstLaunchVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "FirstLaunchVC")
let transition:CATransition = CATransition()
transition.duration = 0.5
transition.timingFunction = CAMediaTimingFunction(name: CAMediaTimingFunctionName.easeInEaseOut)
transition.type = CATransitionType.push
transition.subtype = CATransitionSubtype.fromTop
self.navigationController?.modalPresentationStyle = .fullScreen
self.navigationController!.view.layer.add(transition, forKey: kCATransition)
self.navigationController?.pushViewController(firstLaunchVC, animated: true)

这是 bottom 的 pushing 但不是 fullscreen。我也在终端中收到此消息：

Setting modalPresentationStyle once <UINavigationController: 0x1060f2a00> has been presented will have no effect until it is dismissed and presented again.

如何从 presented ViewController 推送全屏？

我希望我说清楚了我的问题。如果您需要更多信息，请告诉我。

Answer 1

转换协调器 - UINavigationControllerDelegate

创建一个符合 UINavigationControllerDelegate 的简单 class，我不会详细说明，但作为您问题答案的主要方法是 navigationController(_:animationControllerFor:from:to:)

在此方法的主体中，您可以检索正在执行的操作（推送、弹出...），此外，您还可以根据视图控制器（从、到）为动画师做出决定。

如果你想要默认动画师只是 return nil.

例子

func navigationController(_ navigationController: UINavigationController, animationControllerFor operation: UINavigationControllerOperation, from fromVC: UIViewController, to toVC: UIViewController) -> UIViewControllerAnimatedTransitioning? {
   switch operation {
   case .push: // For push method
       return YourCustomAnimator() //Conforming to `UIViewControllerAnimatedTransitioning`
   case .pop:
       return nil // For pop we want default animation
   // I skipped the default case
   }
    
   // CASE 2 

   // Or for example you want to make custom animation only for specific view controller
   if toVC is SpecialViewController {
      return YourCustomAnimator()
   }

   return nil // for the rest use default animation
}

Answer 2

我通过调用这个修复了它：

let navigationController = UINavigationController(rootViewController: firstLaunchVC)
navigationController.modalPresentationStyle = .fullScreen
present(navigationController, animated: true)

这正是我想要的工作方式，尽管我不太确定我是否搞砸了我的 ViewController-Hirarchy...无论如何它正在工作 :D 感谢您的帮助

在 ModalView 中从底部推送 ViewController 全屏

Push ViewController full screen from bottom inside ModalView

uiviewcontroller

uinavigationcontroller

pushviewcontroller

ios

swift

转换协调器 - UINavigationControllerDelegate

例子