title: iOS UISlider Customization. Showing highlight from the center
body: <p>I am trying to create a slider for my app similar to the one shown below. I tried doing it in interface builder but no luck. The default slider always shows highlight from the left. How can this be achieved?</p>
  
  <p><img src="https://i.stack.imgur.com/wl3dE.png" alt="enter image description here"></p>