title: Android toolbar to all the activities
body: <p>I am new to Android. I need to define the tool bar to all the activity. For home screen I have some menu icons on toolbar. </p>
  
  <p>For other activities I need to have back button on toolbar with some selected menu icons. (visible true and false). </p>
  
  <p>What's the best approach ? </p>
  
  <ol>
  <li>Define one toolbar and user it everywhere</li>
  <li>Create toolbar every time for each activities.</li>
  </ol>
  
  <p>When I create new activities I don't want to create toolbar every time. What's the best way to have activities in inheritance way. (define toolbar once and use it everywhere on activity screen)?</p>