title: How to keep android device's layout responsive
body: <p>I am new to xml and android and I was designing a simple application that has 3 buttons in two rows. Now I can't get to a way to make the layout responsive (adjust according to the screen resolution) for every android device. I did a little search but couldn't find anything relative.
      So my first question is can you create a UI with xml that works with all sizes of screen?
      If yes then how to do it? Or at-least please point me in the right direction.
  Thanks</p>