导航栏正在向状态栏移动

问题描述：

我有一个 viewController 。哪个没有 navigationBar。我正在推送另一个 viewController ，它有 navigationBar。哪个涨了
我使用下面的代码来显示 navigationBar

I have a viewController. Which does not have navigationBar. I am pushing another viewController that has navigationBar. Which is going up I am using following code to show the navigationBar

self.navigationController?.setNavigationBarHidden(false, animated: false)

答

我相信你试图在 firstVC 中隐藏 navigationBar 并在 secondVC 。

I believe you trying to hide navigationBar in firstVC and show it in secondVC.

在 firstVC 中尝试以下方法并制作确定你用 navigationController 嵌入你的 firstVC 。

Try following method into your firstVC and make sure you embedded your firstVC with navigationController.

你的 storyBoard 流程布局应如下所示...

Your storyBoard flow layout should be look like below...

在firstV中实现以下方法C.

override func viewWillAppear(_ animated: Bool) {

    self.navigationController?.setNavigationBarHidden(true, animated: true)
}

override func viewWillDisappear(_ animated: Bool) {

    self.navigationController?.setNavigationBarHidden(false, animated: true)   
}

输出：已更新

导航栏正在向状态栏移动

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