title: iOS Simulator : Black screen with navigation bar
body: <p>I have changed a bunch of UIViewControllers, added buttons and the like, and not my app won't start, not sure what I did wrong.</p>
  
  <p>I get a black screen, <strong>BUT</strong>, I see the statusbar and a navigation bar.</p>
  
  <p>I searched for keywords xcode/ios simulator/swift/objective-c along with black screen, but all suggestions (e.g. reset content, clean, deleting all schemas, adding viewDidLoad, a couple of more) were directed towards having a <em>whole black screen</em> and thus didn't work when I tried them.</p>
  
  <p>How can I fix this?</p>