title: Imagem Button back to last activity
body: <p>My project have 5 activities (1 menu, 3 sub menus and 1 help)</p>
  
  <p>All activities have HELP Button (except HELP activity). inside Help activity have imagem button BACK.</p>
  
  <p>What should I do so that when the help button is clicked it back to the previous activive?</p>
  
  <p>I'm already using the method  to return the previous activity:</p>
  
  <pre><code>Override
       public boolean onKeyDown (int keyCode, KeyEvent event) {
           if (keyCode == KeyEvent.KEYCODE_BACK) {
               Finish ();
  
           }
           return true;
       }
  </code></pre>
  
  <p>But beyond this I want to implement with the BACK button.</p>