title: Bottom Navigation with Fragments or Activity
body: <p>I have an app with 3 layouts (1 list and 2 webviews) and one Main Activity with <strong>bottom navigation</strong>.</p>
  
  <p>My first idea was drawn the 3 layouts (1 list and 2 webviews) into Main Activity layout and hide 2 layouts (webviews). So, when I push in some bottom navigation option, show that option and hide the others options.</p>
  
  <p>But I thought to do the same with Fragments. The behavior is similar, but I have to created 3 Fragments and when push in some bottom navigation option, I should replace the Fragment option.</p>
  
  <p>When I read another bottom navigation examples, it uses the first 'idea', but I think second idea is clearest.</p>
  
  <p>How to use the bottom navigation? Activity with layouts or Fragments? Do you know another option?</p>