title: How to get existing fragments when using FragmentPagerAdapter
body: <p>I have problem making my fragments communicating with each other through the <code>Activity</code>, which is using the <code>FragmentPagerAdapter</code>, as a helper class that implements the management of tabs and all details of connecting a <code>ViewPager</code> with associated <code>TabHost</code>. I have implemented <code>FragmentPagerAdapter</code> just as same as it is provided by the Android sample project <em>Support4Demos</em>.</p>
  
  <p>The main question is how can I get particular fragment from <code>FragmentManager</code> when I don't have neither Id or Tag? <code>FragmentPagerAdapter</code> is creating the fragments and auto generating the Id and Tags.</p>