title: ActionBar Up button and Navigation pattern
body: <p>I want to implement <a href="http://developer.android.com/design/patterns/navigation.html">Navigation Pattern</a> in my app with Up button in ActionBar.</p>
  
  <p>I have Details Activity, here I can come from home, favorites and search screen. Also I can open this screen from browser(handling specific url). When user press Up button, I use flush() method, to emulate back navigation. But for case, when user come from browser, I want to open home screen instead of previous browser activity. How I can recognize, that previous activity was from another app, and navigate to home screen?</p>