title: How to put UITableView always in center of UIView?
body: <p>I would like to implement a <code>UITableView</code> in the center of a <code>UIView</code>. Initially it has only 2 or 3 rows. When user adds more rows, it would extend in vertical direction, while the whole content remains in the center, as shown as below:</p>
  
  <p><img src="https://i.stack.imgur.com/BJLym.png" alt="enter image description here"></p>
  
  <p>Is it possible to do that with <code>UITableView</code>?</p>