private void SavePreviousPageState(string pageKey)
{
Debug.WriteLine($"SavePreviousPageState(pageKey={pageKey})");
if (string.IsNullOrEmpty(pageKey))
{
AppStateController.SaveViewState(((IContentPage)_navigation.CurrentPage)?.OnSleep());
}
else
{
var page = _navigation.Navigation.ModalStack.FirstOrDefault(x => x.GetType() == _pagesByKey[pageKey]);
AppStateController.SaveViewState(((IContentPage)page)?.OnSleep());
}
}
protected override void OnSleep()
{
try
{
if (((MasterDetailPage)Application.Current.MainPage).Detail is NavigationPage navigation)
{
AppStateController.SaveViewState(navigation.Navigation.ModalStack.Any()
? ((IContentPage)navigation.Navigation.ModalStack.Last()).OnSleep()
: ((IContentPage)navigation.Navigation.NavigationStack.Last()).OnSleep());
AppStateController.SaveFinalState();
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
