title: how to open a custom layout when menu item is pressed
body: <p>I have created a layout file which needs to displayed when a menu item is pressed.</p>
  
  <pre><code>   public boolean onOptionItemSelected(MenuItem item){
      switch (item.getItemId()) {
                ....
         case R.id.help:
             return true;
               ......
      }
  }
  </code></pre>
  
  <p>the help item menu should display the layout.xml file.</p>