title: Android how to implement expandable listview filter search?
body: <p>I am trying to develop an android application with expandable list view able to search group items from filter search.  </p>
  
  <p>I have found many tutorials that do just that where a search-bar is placed at the top and if you type in the box the results get filtered.</p>
  
  <p>I able find <a href="https://stackoverflow.com/questions/20467293/not-able-to-implement-search-in-expandable-list-view">this</a> and <a href="https://stackoverflow.com/questions/15057148/android-listview-search-filter">this</a> for something very related to my problem and i have followed up <a href="https://stackoverflow.com/questions/19356262/how-to-use-edit-text-as-search-box-in-expandable-listviewandroid">this</a> way to implementation.</p>
  
  <p>I was unable to get successful result. its not working without prompting any errors. please suggest me some tutorial to achieve this task.</p>
  
  <p>appreciate any help.. </p>