title: iOS Tab Bar Controller : home message without tab item selected
body: <p>I have built an iOS application based on a <code>tab bar controller</code> with several <code>view controllers</code>.</p>
  
  <p>When the application starts, the view of the first view controller appears (normally).</p>
  
  <p>I would like to print a "home message" that is not related to a view controller of the tab bar. When the user clicks on a tab, then the associated view is printed.</p>
  
  <p>Is this possible?</p>