xcode 隐藏视图控制器的导航栏
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Hide Navigation Bar for a View Controller
提问by Jonathan Solorzano
I've tried to hide the navigation controller for a single view controller with no luck, the navigation bar is hidden for the first vc, but it's not displaying for the second vc.
我试图隐藏单个视图控制器的导航控制器，但没有运气，第一个 vc 隐藏了导航栏，但第二个 vc 没有显示它。
Here's the code I've used in the first vc:
这是我在第一个 vc 中使用的代码：
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// Hide the Navigation Bar
self.navigationController?.setNavigationBarHidden(true, animated: animated)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// Show the Navigation Bar
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
What's changed in swift 4? That code worked in swift 3...
swift 4 有什么变化？该代码在 swift 3 中有效......
回答by Dilip Tiwari
Use code:- Swift 4
使用代码：- Swift 4
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(true)
// Hide the Navigation Bar
self.navigationController?.setNavigationBarHidden(true, animated: true)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(true)
// Show the Navigation Bar
self.navigationController?.setNavigationBarHidden(false, animated: false)
}
I think you have done mistake in animated: true
我认为你做错了 animated: true
