title: PresentModel View Controller Problem
body: <p>Hi Every one I have have a problem with present model view Controller. Here's the scenario:</p>
  
  <ol>
  <li><p>This is navigation bar application I have a UIViewController class in which I add another class of <code>UIView</code> Controller by using this statement <code>[self.view addSubView:controllerClass]</code>;</p></li>
  <li><p>In controllerClass I have insert tab bar at the bottom and also write its delegates on each tab bar click i'll add another <code>UIViewController</code> class to it as a subView but i'll make the height or frame to this controller is <code>(0,0,320,369)</code>. so that tab bar shown through out when we click on different tabs.</p></li>
  <li><p>By clicking on first tab say ScannerViewController add a subview. There is a gallery button in this View. when user clicks on it a presentModel View Controller Insert to it and hide the navigation bar when i select the image from the gallery and make navigation bar <code>hidden =NO</code> , it dosen't work and the tab bar on bottom was disappeared.</p></li>
  </ol>