title: How to disable "pull to refresh" action and use only indicator?
body: <p>I enabled "pull to refresh" to my project using the <code>SwipeRefreshLayout</code>.</p>
  
  <p>When I move down,  appear the loading indicator (material design style). I know, it must so work, but I want to disable this function, and start refreshing by click some button and use <code>SwipeRefreshLayout</code> loading indicator.</p>
  
  <p>How I can to do this?</p>