How to remove a tab bar from view having two tab bars on top of each other?

Question

I want to remove the black tab bar from the A screen. I tried to do the code below to screen but it removes the white one.

override func viewDidLoad() {
        super.viewDidLoad()
        self.tabBarController?.tabBar.isHidden = true

    }

Answer 1

in my opinion this not a good user experience for iOS users, but any way please try the following approach and it will works fine with you

1- first of all build try to build the following hierarchy in your stroyboard

note that the gray view Controller is not UITabBarController it just a UIViewController, but it contain a UITabBar object

2- you need to give the red view controller stroyboard id "RedViewController" and also give the blue view controller "BlueViewController"

3- give the nested UITabBarItem tag 0 for the first UITabBarItem which named "Favorite" and give tag 1 for second UITabBarItem which named "more"

4- finally add the following class to the UIViewController that have the UITabBar object, in our example it will be the gray view controller

class SecondViewController: UIViewController {

lazy var blueViewController: UIViewController? = {
    self.storyboard?.instantiateViewController(withIdentifier: "BlueViewController")
}()

lazy var redViewController: UIViewController? = {
    self.storyboard?.instantiateViewController(withIdentifier: "RedViewController")
}()

@IBOutlet weak var containerView: UIView!
@IBOutlet weak var nestedTabBar: UITabBar!
override func viewDidLoad() {
    super.viewDidLoad()
    nestedTabBar.delegate = self
    addRedViewController()
    self.nestedTabBar.selectedItem = self.nestedTabBar.items?.first
}

func addBlueViewController() {

    if let redViewController = redViewController {
        redViewController.willMove(toParent: nil)
        redViewController.view.removeFromSuperview()
        redViewController.removeFromParent()
    }

    if let blueViewController = blueViewController {
        addChild(blueViewController)
        blueViewController.view.frame = containerView.frame
        containerView.addSubview(blueViewController.view)
        blueViewController.didMove(toParent: self)
    }
}

func addRedViewController() {

    if let blueViewController = blueViewController {
        blueViewController.willMove(toParent: nil)
        blueViewController.view.removeFromSuperview()
        blueViewController.removeFromParent()
    }

    if let redViewController = redViewController {
        addChild(redViewController)
        redViewController.view.frame = containerView.frame
        containerView.addSubview(redViewController.view)
        redViewController.didMove(toParent: self)
    }  
  }
}

extension SecondViewController: UITabBarDelegate {

func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {

    if item.tag == 0 {
        addRedViewController()
    } else {
        addBlueViewController()
    }
  }
}