/// <summary>
 /// Each time this page is disappearing, a floating button should be hidden.
 /// </summary>
 protected override void OnDisappearing()
 {
     // Stop listening for key events
     MenuKeyListener.Stop(this);
     // Make a floating button hidden
     ((App)Application.Current).HideFloatingButton(Title);
 }
 private void Dialog_Shown(object sender, EventArgs e)
 {
     // Disable handling HW menu key while MoreMenuDialog is shown
     MenuKeyListener.Stop(this);
 }