title: iOS - Getting desired shadow above UITabBar
body: <p>I am trying to get my tab bar shadow to look like the one seen in this image:</p>
  
  <p><img src="https://i.stack.imgur.com/O1zKe.png"></p>
  
  <p>What is the best way of doing this? I am using objective-c<br>
  Thanks</p>