我试图隐藏单个视图控制器的导航控制器而没有运气,第一个vc隐藏了导航栏,但是第二个vc没有显示导航栏。
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)
}
swift 4有什么变化?该代码在swift 3中起作用......
答案 0 :(得分:29)
使用代码: - Swift 4
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(true)
// Show the Navigation Bar
self.navigationController?.setNavigationBarHidden(true, animated: true)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(true)
// Hide the Navigation Bar
self.navigationController?.setNavigationBarHidden(false, animated: false)
}
我认为你在animated: true