title: Get Child views of the current selected items in Viewpager
body: <p>When I get a child view from items 0 to 2 in viewpager, it works fine. When I try to get a child view from 3 onward, it returns null. How can I get all the current selected child view of viewpager?</p>
  
  <p><em>Edited:</em></p>
  
  <pre><code>View view = viewPager.getChildAt(viewPager.getCurrentItem());
  </code></pre>
  
  <p>When viewPager.getCurrentItem() reached 3 onward, the view return null.</p>