title: How to handle back button in activity
body: <p>How to handle a back button in an activity? I have some buttons. If I click one of the buttons, it's redirecting to the buttons which I required. It's working fine but when I press back button it gets finished.</p>
  <p>How to solve this problem? I have only one activity for all those buttons.</p>
  <pre><code>@Override
  public boolean onKeyDown(int keyCode, KeyEvent event) 
  {
      if ((keyCode == KeyEvent.KEYCODE_BACK)) 
      {
          return false; //I have tried here true also
      }
      return super.onKeyDown(keyCode, event);
  }
  </code></pre>
  <p>I have used above code to handle back button but it's not working. When I press back button its struck there itself.</p>