title: UIView frame bounds not resizing automatically
body: <p>I am using Xcode 5 with mostly default xib settings for an iOS 7 app.</p>
  
  <p>Whether I run my app in the 4" simulator or the 3.5" simulator, the frame bounds are always 320 x 504 when inspected in the debugger (viewDidLoad):</p>
  
  <pre><code>po self.view
  &lt;UIView: 0x9cfa990; frame = (0 0; 320 504); autoresize = W+H; layer = &lt;CALayer: 0x9cecdd0&gt;&gt;
  </code></pre>
  
  <p>This is fine for the 4" screen but there is some cutoff in the 3.5" screen.</p>
  
  <p>How can I make sure the view resizes on any sized screen, seeing as iPhone 6 is coming out and that will be different as well?</p>
  
  <p>For example, if I have subview inside my view, I know how to pin it to the top and bottom, but what if I want to pin the view itself to the top and bottom of the screen or window itself? What constraints or parameters do I need to set? Can it be done in Interface Builder or only programmatically?</p>