public Page PresentAsNavigatableMainPage <TViewModel>(ref TViewModel viewModel) where TViewModel : BaseViewModel
{
viewModel = _viewLocator.GetViewModel <TViewModel>();
var page = _viewLocator.CreateAndBindPageFor(viewModel);
NavigationPage newNavigationPage = new NavigationPage(page);
IEnumerable <BaseViewModel> viewModelsToDismiss = FindViewModelsToDismiss(_presentationRoot.MainPage);
if (_presentationRoot.MainPage is NavigationPage navPage)
{
navPage.PopRequested -= NavPagePopRequested;
}
viewModel.BeforeFirstShown();
// Listen for back button presses on the new navigation bar
newNavigationPage.PopRequested += NavPagePopRequested;
_presentationRoot.MainPage = newNavigationPage;
foreach (BaseViewModel toDismiss in viewModelsToDismiss)
{
toDismiss.AfterDismissed();
}
return(newNavigationPage);
}
