title: Add same NavigationBar on every page in swift
body: <p>I recently try to develop an application in swift and wanted to make a navigation bar which is the same on every single view.
  I tried different approaches. The best one so far was a solution from another stack overflow-question you can see <a href="https://stackoverflow.com/questions/40780919/swift-add-same-navigation-bar-items-to-every-page">here</a></p>
  
  <p>The solution from Jacob King works for me, but because I am relatively new in Swift, I am concerned if his approach would add a second, third, fourth,... navigation bar every time I navigate between two views, which both inherit the navigation bar? And if that is true, how can I solve this problem?</p>
  
  <p>Thanks for all efforts in advance.</p>