我如何隐藏导航栏从第一个ViewController或一个特定的ViewController在swift?
我在viewDidLoad()中使用了以下代码:
override func viewDidLoad() {
super.viewDidLoad()
self.navigationController?.isNavigationBarHidden = true
}
以及viewWillAppear:
override func viewWillAppear(animated: Bool) {
self.navigationController?.isNavigationBarHidden = true
}
这两种方法都对所有viewcontroller隐藏导航控制器。
当前回答
在Swift 3中，你可以使用isNavigationBarHidden属性来显示或隐藏导航栏
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
// Hide the navigation bar for current view controller
self.navigationController?.isNavigationBarHidden = true;
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
// Show the navigation bar on other view controllers
self.navigationController?.isNavigationBarHidden = false;
}
其他回答
我使用了上面的一个变体，并将应用程序的各个部分嵌入到不同的navcontroller中。这样，我就不必重置可见性。例如，在启动序列中非常有用。
如果您知道所有其他视图都应该有可见的条，您可以使用viewWillDisappear将它再次设置为可见。
迅速:
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
navigationController?.setNavigationBarHidden(true, animated: animated)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
navigationController?.setNavigationBarHidden(false, animated: animated)
}
private func setupView() {
view.backgroundColor = .white
navigationController?.setNavigationBarHidden(true, animated: false)
}
替代
在viewDidLoad中使用此设置
title = "Madman"
navigationController?.isNavigationBarHidden = false
navigationController?.navigationBar.prefersLargeTitles = true
navigationItem.largeTitleDisplayMode = .always
检查Collectionview, scrollview或tableView的约束
NSLayoutConstraint.activate([
tableView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
tableView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
tableView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
tableView.trailingAnchor.constraint(equalTo: view.trailingAnchor)
])
在视图中调用set hide方法Will appear和Disappear。如果不调用，视图中的方法将消失，状态为false。它将在完整的导航层次结构中隐藏导航栏
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(true, animated: true)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.setNavigationBarHidden(false, animated:true)
}
想在第一个视图控制器上隐藏导航栏
override func viewWillAppear(animated: Bool) {
self.navigationController?.isNavigationBarHidden = true
}
想在第二个视图控制器上显示导航栏
override func viewWillAppear(animated: Bool) {
self.navigationController?.isNavigationBarHidden = false
}
