Modify options menu while it is visible before API 11
<p>My options menu contains a "refresh" button that triggers an <code>AsyncTask</code>. I would like to have that button disabled while the task is running.</p>

<p>Can I modify an options menu even <em>while it is visible</em>, and if so, how?</p>

<p>Or can I at least force it to refresh and call <code>onPrepareOptionsMenu()</code> again?</p>

<p><em>Note:</em> I am on API level 8, so I cannot call <code>invalidateOptionsMenu()</code>.</p>
