title: How to hide menu item from fragment?
body: <p>I want to hide a menuitem from my Menu in my Navigation Drawer.
  I tried using setHasOptionsMenu(true) and then adding the method </p>
  
  <pre><code>public boolean onPrepareOptionsMenu(Menu menu){
      //this is where i tried to hide the item
      menu.findItem(R.id.item).setVisible(false);
  }
  </code></pre>
  
  <p>But it says that is null.</p>
  
  <p>Any suggestions?</p>