title: How to spacing tab bar items equally in tab bar
body: <p>I have 3 tab bar items, I want them to show like this in tab bar:</p>
  
  <pre><code>|                  |
  
  |    1    2    3   |
  
  |                  |
  </code></pre>
  
  <p>I see this property in InterfaceBuilder:</p>
  
  <p><a href="https://i.stack.imgur.com/weoIq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/weoIq.png" alt="enter image description here"></a></p>
  
  <p>I have tried all cases, but it doesn't work, it shows something like this:</p>
  
  <pre><code>|                  |
  
  |      1  2  3     |
  
  |                  |
  </code></pre>