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
/*. 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)
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)
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
}
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)
}
你可以在viewWillDisappear中取消隐藏navigationController
override func viewWillDisappear(animated: Bool)
{
super.viewWillDisappear(animated)
self.navigationController?.isNavigationBarHidden = false
}
斯威夫特3
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: animated)
}
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。
