title: hide the statusbar
body: <p>I hope to display the view of one of ViewControllers in my app as full screen , so in Interface Builder, I set the statusbar as None.
  I also resize the frame of view as 320*480</p>
  
  <p>but when I run the app, the view of the viewcontroller still displays the statusbar.</p>
  
  <p>Welcome any comment</p>
  
  <p>thanks</p>
  
  <p><img src="https://i.stack.imgur.com/W8m0K.png" alt="alt text"></p>