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
你也可以为此创建一个扩展，这样你就可以重用扩展，而不必在每个视图控制器中反复实现这个。
import UIKit
extension UIViewController {
func hideNavigationBar(animated: Bool){
// Hide the navigation bar on the this view controller
self.navigationController?.setNavigationBarHidden(true, animated: animated)
}
func showNavigationBar(animated: Bool) {
// Show the navigation bar on other view controllers
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
}
因此，您可以使用如下所示的扩展方法
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
hideNavigationBar(animated: animated)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
showNavigationBar(animated: animated)
}
其他回答
/*. Swift 5 */
let controller = self.storyboard?.instantiateViewController(withIdentifier: "sc_userNavigation") as! UserNavigationViewController
let navigationController = UINavigationController(rootViewController: controller)
navigationController.setNavigationBarHidden(true, animated: false)
navigationController.modalPresentationStyle = .fullScreen
self.present(navigationController, animated: false, completion: nil)
你也可以为此创建一个扩展，这样你就可以重用扩展，而不必在每个视图控制器中反复实现这个。
import UIKit
extension UIViewController {
func hideNavigationBar(animated: Bool){
// Hide the navigation bar on the this view controller
self.navigationController?.setNavigationBarHidden(true, animated: animated)
}
func showNavigationBar(animated: Bool) {
// Show the navigation bar on other view controllers
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
}
因此，您可以使用如下所示的扩展方法
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
hideNavigationBar(animated: animated)
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
showNavigationBar(animated: animated)
}
在Swift中显示导航栏的方法:
self.navigationController?.setNavigationBarHidden(false, animated: true)
self.navigationController?.navigationBar.isHidden = false
self.navigationController?.isNavigationBarHidden = false
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Swift中隐藏导航栏的方法:
self.navigationController?.setNavigationBarHidden(true, animated: true)
self.navigationController?.navigationBar.isHidden = true
self.navigationController?.isNavigationBarHidden = true
