title: How to display new screen when a button is clicked?
body: <p>I'm writing my first android application and I want to display a result at new screen when a button is clicked . I searched about it , I found that  I need multiple activities or layouts .
  But I still don't get what I should do exactly (I haven't developed using Android before). I want to display a totally new screen when a button is clicked , what should I do? </p>
  
  <p>I wish if anyone can tell clear steps to do so.</p>