title: How to show a ProgressDialog when MapView (MapBox) is loading on Android?
body: <p>I have an Activity that i use to show a <code>MapView</code> from the Android mapbox-sdk.</p>
  
  <p>I am trying show a <code>ProgressDialog</code> while the <code>MapView</code> is loading , so that i need to <em>listen</em> to any load finishing event.</p>
  
  <p>Looking at the Documentation Site, the only available listeners are listed below</p>
  
  <ul>
  <li>MapView.OnFlingListener</li>
  <li>MapView.OnFpsChangedListener</li>
  <li>MapView.OnInfoWindowClickListener</li>
  <li>MapView.OnMapChangedListener</li>
  <li>MapView.OnMapClickListener</li>
  <li>MapView.OnMapLongClickListener</li>
  <li>MapView.OnMarkerClickListener</li>
  <li>MapView.OnMyLocationChangeListener</li>
  <li>MapView.OnScrollListener</li>
  </ul>
  
  <p>Anyone have done that with the version 2.2.0 of MapBox for Android? It could be a workaround too.</p>
  
  <p>Thanks in advance.</p>