title: viewPager.getChildCount() zero after onActivityResult
body: <p>I have a <strong>MainActivity</strong> with a <code>ViewPager</code> that I setup in <code>onCreate()</code>. MainActivity starts <strong>CatActivity</strong> for results. in <code>onActivityResult</code>, when I check the viewPager the <code>viewPager.getChildCount()</code> <strong>says 0, whereas it is supposed to say 3.</strong></p>