title: Tapping nested GridView
body: <p>There is a GridView (1G) (days in scheduler), each cell of which consists of another GridView (2G) (time segments).<br>
  The goal is: when you tap any cell of 2G the 1G cell in which 2G is nested must be activated.<br>
  What we have at the moment: the 2G cell activates.</p>
  
  <p>Any ideas?</p>