How to add UIView over navigation bar?

Question

I need overlay UINavigationBar with UIView like here

Answer 1

Here's how implemented mine, hope this helps..

  override func viewWillAppear(_ animated: Bool) {
    let testView = UIView(frame: .zero)
    testView.backgroundColor = .black
    testView.layer.cornerRadius = 10
    testView.translatesAutoresizingMaskIntoConstraints = false
    self.navigationController?.navigationBar.addSubview(testView)
    NSLayoutConstraint.activate([
      testView.widthAnchor
        .constraint(equalToConstant: 50),
      testView.heightAnchor
        .constraint(equalToConstant: 70),
      testView.topAnchor
        .constraint(equalTo: (self.navigationController?.navigationBar.topAnchor)!),
      testView.trailingAnchor
        .constraint(equalTo: (self.navigationController?.navigationBar.trailingAnchor)!, constant: -20)
      ])
    self.customView = testView
  }
  
  // i dont need to display the overlay in every page
  // so i remove it everytime i navigate to a new page
  override func viewWillDisappear(_ animated: Bool) {
    super.viewWillDisappear(animated)
    self.customView.removeFromSuperview()
  }