title: Only white rectangle appears after adding a subview
body: <p>I'm trying to add a subview with this code:</p>
  
  <pre><code>NSArray *subviewArray = [[NSBundle mainBundle] loadNibNamed:@"subView" owner:self options:nil];
  SubView *subView = [subviewArray objectAtIndex:0];
  [self.view addSubview:subView];
  </code></pre>
  
  <p>But only a white rectangle appears, however with the correct size.
  The <code>SubView</code>'s initialization methods aren't called at all. (The <code>initWithCoder:(NSCoder *)aDecoder</code> should be called in this case, but isn't.)</p>
  
  <p>The xib's owner is the SubView class. This is a view and not a controller.</p>
  
  <p>What could cause this malfunction, and what would be the proper solution?</p>