title: Options menu not showing up in Android
body: <p>My objective is to you use one menu for all activities. For that, I have a base activity which consists of 2 methods: <code>onCreateOptionsMenu()</code> and <code>onOptionsItemSelected()</code>. In <code>onCreateOptionsMenu()</code>, I am creating a menu using <code>MenuInflater</code>.</p>
  
  <p>Further, I have 2 activities which extends the above <code>BaseActivity</code> so that same menu is shown for both the activities. My issue is that, when my first activity is launched, options menu is shown, I move to second activity from the first. In the second activity also, when I press the menu button, I am able to view the menu. After that, using <kbd>Back</kbd> key press, I come to first activity again, the menu is also shown up there, But when I move to the second activity thereafter, <strong>menu is not shown to me.</strong></p>