title: Setting a preference screen summary from switch preference state
body: <p>Am trying to dynamically update a particular preference screen summary which nest sub options(This preference screen has it's own key name). My goal is that the preference screen summary should be updated by the state of a switch preference in it's sub or nested view. I tried using the guide here <a href="https://stackoverflow.com/questions/13596250/how-to-listen-for-preference-changes-within-a-preferencefragment">How to listen for preference changes within a PreferenceFragment?</a> but this only shows how to dynamically update particular key references.</p>
  
  <p>Any pointers to achieve this implementation for particular preference screen with key name?</p>