title: UIToolbar offset - black strip appearing
body: <p>So here's my Swift code (AppDelegate.swift):</p>
  
  <pre><code>var window: UIWindow?
  var rootViewController :UIViewController?
  
  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -&gt; Bool {
  
      if ((UIDevice.currentDevice().systemVersion as NSString).floatValue &gt;= 7) {
          //yes, I'm using a newer iOS - greater/equal to iOS 7
          rootViewController  = Login(nibName:"Login",bundle:nil)
          let x = UIScreen.mainScreen().bounds.size.width
          let y = UIScreen.mainScreen().bounds.size.height
          let frame = CGRectMake(0,20,x,y)
          window = UIWindow(frame: frame)
  
          window!.rootViewController = rootViewController
          window!.makeKeyAndVisible()                
  
          //window!.frame =  CGRectMake(0,20,window!.frame.size.width,window!.frame.size.height-20);
       }
  
       return true
  }
  </code></pre>
  
  <p>I'm trying to offset the screen down by 20px. </p>
  
  <p>Here's what my emulator looks like using the above code (wrong!):</p>
  
  <p><img src="https://i.stack.imgur.com/kL8ye.png" alt="enter image description here"></p>
  
  <p>Here's what it looks like if I do nothing (wrong!):</p>
  
  <p><img src="https://i.stack.imgur.com/r6eiw.png" alt="enter image description here"></p>
  
  <p>Here's what I want it to look like!</p>
  
  <p><img src="https://i.stack.imgur.com/4mACh.png" alt="enter image description here"></p>
  
  <p>I've been at this for HOURS. </p>
  
  <p>I want a robust and manageable way to shift everything down by 20px.</p>
  
  <p>(p.s. I'm <strong>not</strong> using storyboards)</p>