title: How to access a method of an Activity inside TabActivity
body: <p>I would like to access the public method of an Activity run by a TabActivity using:</p>
  
  <pre><code>TabHost tabHost = getTabHost();
  Intent intentMsgsView = new Intent().setClass(this, TeamHuddleScreenMsgsView.class);
  tabHost.addTab(tabHost.newTabSpec("msgs").setIndicator("Messages").setContent(intentMsgsView));
  </code></pre>
  
  <p>Basically, what I what is to let the parent Activity call a method in child Activity in order to do something. Is this possible?</p>
  
  <p>I did try this:</p>
  
  <pre><code>((TeamHuddleScreenMsgsView)getTabHost().getCurrentTabView().getContext()).refreshModel();
  </code></pre>
  
  <p>but I'm encountering a ClassCastException. It seems that the getContext() still gives the TabActivity. Any help on how to get the child Activity? </p>
  
  <p>Thanks.</p>