title: How do I change the android actionbar title and icon
body: <p>I'm trying to do some things on the ActionBar in Android.</p>
  
  <p>I've already added new items in the right side of the action bar.</p>
  
  <p>How can I change the left side of the action bar? I want to change the icon and the text, and I want to add a "Back Button" in the action bar for the other screens</p>
  
  <p><img src="https://i.stack.imgur.com/9w4cI.png" alt="Android Action Bar"></p>