title: Relativelayout or LinearLayout in ios iphone development?
body: <p>I want to add a subview in the top of my view, I have to recalculate the origin y value for all of other views and re-position them to leave space for the new added view.</p>
  
  <p>It is very boring, as I know android have relativelayout or linearlayout can help automatically do that.</p>
  
  <p>How to solve this problem easily in ios development?</p>