title: How can we achive tabbarcontroller like functionlity using UIbutton?
body: <p>I wanted two switched between two three view controller by preserving there current context exactly like what the TabBarController does. But without using TabBarController template.</p>
  
  <p>See the attache screen shot.</p>
  
  <p>?<img src="https://i.stack.imgur.com/S0BiM.png" alt="enter image description here"></p>