setNavigationBarHidden doesn't work after setViewControllers

Question

I found that setNavigationBarHidden doesn't work after setViewControllers?

This is my code:

• HomeNavController.swift:

  class HomeNavController: UINavigationController {
  
      weak var tabBar: HomeTabBar!
  
      var tab: HomeTab = .match {
          didSet {
              switch self.tab {
              case .match:
                  self.setViewControllers([MatchViewController()], animated: false)
              case .moments:
                  self.setViewControllers([MomentsViewController()], animated: false)
              case .myPosts:
                  self.setViewControllers([PostsViewController()], animated: false)
              }
          }
      }
  }
  

• MatchViewController.swift

  override func viewWillAppear(_ animated: Bool) {
      super.viewWillAppear(animated)
  
      self.navigationController?.setNavigationBarHidden(true, animated: false)
  }
  

It works well when I first switch to MatchViewController instance, but it doesn't works after I change the HomeNavController instance's viewControllers with func setViewControllers.

Is it a bug of UINavigationController?

Answer 1

Maybe try setting the properties, this worked in my case:

    let navigationBarAppearance = UINavigationBar.appearance()
    let transparentColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0);
    // Sets the translucent background color
    navigationBarAppearance.backgroundColor = transparentColor
    navigationBarAppearance.titleTextAttributes = [NSForegroundColorAttributeName:transparentColor]
    // Hides the border
    navigationBarAppearance.shadowImage = UIImage()
    navigationBarAppearance.setBackgroundImage(UIImage(), for: .default)