title: ExpandableListView with data from various tables
body: <p>I want to make an expandable list view with data from my SQLite database. </p>
  
  <p>But I only want to take data for child lists from various tables, and Groups will be always the same.</p>
  
  <p>And then put the data of each table to child list of related group.</p>
  
  <p>It is possible? There is some example?</p>
  
  <p>Thanks.</p>