title: Drawing a view on top of another
body: <p>Yes, I agree that these questions lack research effort but I could not think of a specific "keyword search" so I am posting the questions here</p>
  
  <p>I want to draw one view on top of another.. The below view will be the canvas view which draws animations (for the main menu of my game) and the front view has buttons..</p>
  
  <p>So.. Let me split my questions..
  1) How to get the above mentioned behavior?</p>
  
  <p>2) How to change button texture (like when button is up and button is down)</p>
  
  <p>3) How to do animation? (like button sliding from left to center when user opens the game)</p>
  
  <p>Just tell me the things keywords I need to search to get the answers for each of the questions and I will be satisfied. Thanx in advance</p>