customization of the camera overlay
<p>My first question for customization is at <a href="http://stackoverflow.com/questions/10147458/add-a-uibarbutton-for-zbarreaderviewcontroller/10147745#comment13026724_10147745">here</a> and with help from <a href="http://stackoverflow.com/users/251513/mat">Mat</a>. I can customize it. Now I would like to customize the overlay by loading and view from a nib file...
What I am to do is</p>

<blockquote>
  <p>Create another UIViewController called myCustomVIew with its xib</p>
  
  <p>Add a toolbar on top and some buttons onto it</p>
  
  <p>Set controller.cameraOverlay = aView.view</p>
</blockquote>

<p>Please take a look at <a href="http://i.stack.imgur.com/jK2OF.png" rel="nofollow">here</a>, so that you can picture what I am doing so far
<img src="http://i.stack.imgur.com/jK2OF.png" alt="enter image description here"></p>

<p>However when I run my app, the view is shown at <a href="http://i.stack.imgur.com/HQdWh.png" rel="nofollow">here</a>.<img src="http://i.stack.imgur.com/HQdWh.png" alt="enter image description here"></p>

<p>I know I have just screwed up somewhere, please advice me about this issue.</p>
