title: How to set an image on tab bar controllers?
body: <p>I am trying to change the image of a Tab Bar in my application. When I changed the image it was giving me a blank image instead. </p>
  
  <ul>
  <li>Can I set .png format image? </li>
  <li>Is it possible to change the color of the tab bar?</li>
  <li>Can I use a colored image in the tab bar?</li>
  </ul>