private void OnMapViewDrawStatusChanged(object sender, DrawStatusChangedEventArgs e)
{
// Make sure that the UI changes are done in the UI thread
BeginInvokeOnMainThread(() =>
{
// Show the activity indicator if the map is drawing
if (e.Status == DrawStatus.InProgress)
_activityIndicator.Hidden = false;
else
_activityIndicator.Hidden = true;
});
}