How to hide UITabBar when going back in UINavigationController

Question

I have three viewControllers:

• FeedController (UITabBar is visible)
• PostController (UITabBar is hidden)
• UserController (UITabBar is visible

I do this with the following code, from FeedController to PostController:

let postVC = PostController()
postVC.hidesBottomBarWhenPushed = true
pushViewController(postVC, animated: true)
postVC.hidesBottomBarWhenPushed = false

Then, from PostVC to UserVC:

let userVC = UserController()
userVC.hidesBottomBarWhenPushed = false
pushViewController(userVC, animated: true)

It works great. It shows the UITabBar everywhere except when navigating to a Post. However, the problem occurs when I go to a User Profile (UserController) from within a Post. It shows the UITabBar on the profile, as intended, but when I navigate back (using the back button in my UINavigationController) the UITabBar is still visible. I want it to be hidden again when I go back from the userVC to the postVC.

Is there any way I can accomplish this?

Answer 1

try in your post viewController:

  override func viewWillDisappear(_ animated: Bool) {
   postVC.hidesBottomBarWhenPushed = true
}

That will call it when the view is about to disappear but not when it appears so it should hide when you go back.