Swift:在模态中强制显示导航栏

问题描述

我的 Swift 项目中有以下 Storyboard Segue:

I have the following Storyboard Segue in my Swift project:

动画是正确的，但是目标视图控制器中没有导航栏.我想强制目标视图控制器有一个导航栏.我在目标视图控制器中尝试过:

The animation is correct, but there is no navigation bar in the destination view controller. I want to force the destination view controller to have a navigation bar. I tried in the destination view controller:

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(true)
    navigationController?.navigationBar.hidden = false
}

或者:

override func viewWillAppear(animated: Bool) {
    self.navigationController?.setNavigationBarHidden(false, animated: true)
}

但它拒绝显示任何导航栏.

But it refuses to show any navigation bar.

如何执行垂直转场(如Cover Vertical")但仍然在目标视图控制器中显示半透明导航栏?

How can I perform a vertical segue (like "Cover Vertical") but still display a translucent Navigation bar in the destination view controller?

目标视图控制器的我的属性检查器:

My Attributes inspector for the destination view controller:

推荐答案

尝试将 Segue 创建到导航控制器而不是您的视图控制器.导航栏仅针对导航堆栈中的视图控制器显示.在您的情况下，源视图控制器似乎在导航堆栈中，但不在呈现的视图控制器中.尝试这样的事情:

Try to create the Segue to a Navigation controller instead of your view controller. Navigation bars are only shown for view controllers in a navigation stack. In your case, the source view controller seems to be in a navigation stack but not the presented view controller. Try something like this:

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