设置navigationController.hidesBarsOnSwipe = YES从不再显示我的导航栏 [英] Setting navigationController.hidesBarsOnSwipe = YES never shows my navbar again

问题描述

当我设置 navigationController.hidesBarOnSwipe = YES 并尝试在显示的webView中滑动导航栏被隐藏，但当我尝试滑动到它时它将永远不会再出现把它拿回来。

When i set navigationController.hidesBarOnSwipe = YES and try swiping in the webView shown the navigation bar is hidden, but it will never show up again, when i try swiping to get it back.

我的ViewController正在收听滑动事件：

My ViewController is listening to the swipe event :

[self.navigationController.barHideOnSwipeGestureRecognizer addTarget:self action:@selector(swipe:)]?

但是由于滑动隐藏了导航栏后，实际上从未再次调用此选择器。任何人都实现了 hidesBarOnSwipe ？它是一个已知的bug还是设计成隐藏后不会显示导航栏。

But this selector is in fact never called again after the navigation bar is hidden because of the Swipe. Anyone implemented hidesBarOnSwipe? Is it a known bug or is it as designed that it won't show the navigation bar after hiding it.

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推荐答案

我的 UIWebView 存在同样的问题，通过更新约束来解决这个问题我的 WebView 相对于superview而不是布局指南：

I have the same problem with my UIWebView, It's fixed by updating the constrains of my WebView to be relative to the superview not layout guide:

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