private bool TryShowPage(MvxViewModelRequest request)
{
var page = MvxPresenterHelpers.CreatePage(request);
if (page == null)
{
return(false);
}
var viewModel = MvxPresenterHelpers.LoadViewModel(request);
SetupForBinding(page, viewModel, request);
var mainPage = _mvxFormsApp.MainPage as NavigationPage;
if (mainPage == null)
{
_mvxFormsApp.MainPage = new NavigationPage(page);
mainPage = MvxFormsApp.MainPage as NavigationPage;
CustomPlatformInitialization(mainPage);
}
else
{
try
{
// check for modal presentation parameter
string modalParameter;
if (request.PresentationValues != null && request.PresentationValues.TryGetValue(ModalPresentationParameter, out modalParameter) && bool.Parse(modalParameter))
{
mainPage.Navigation.PushModalAsync(page);
}
else
{
// calling this sync blocks UI and never navigates hence code continues regardless here
mainPage.PushAsync(page);
}
}
catch (Exception e)
{
Mvx.Error("Exception pushing {0}: {1}\n{2}", page.GetType(), e.Message, e.StackTrace);
return(false);
}
}
return(true);
}
private bool TryShowPage(MvxViewModelRequest request)
{
var page = MvxPresenterHelpers.CreatePage(request);
if (page == null)
{
return(false);
}
var viewModel = MvxPresenterHelpers.LoadViewModel(request);
SetupForBinding(page, viewModel, request);
var mainPage = _mvxFormsApp.MainPage as MasterDetailPage;
// Initialize the MasterDetailPage container
if (mainPage == null)
{
// The ViewModel used should inherit from MvxMasterDetailViewModel, so we can create a new ContentPage for use in the Detail page
var masterDetailViewModel = viewModel as MvxMasterDetailViewModel;
if (masterDetailViewModel == null)
{
throw new InvalidOperationException("ViewModel should inherit from MvxMasterDetailViewModel<T>");
}
Page rootContentPage = null;
if (masterDetailViewModel.RootContentPageViewModelType != null)
{
var rootContentRequest = new MvxViewModelRequest(masterDetailViewModel.RootContentPageViewModelType, null, null);
var rootContentViewModel = MvxPresenterHelpers.LoadViewModel(rootContentRequest);
rootContentPage = MvxPresenterHelpers.CreatePage(rootContentRequest);
SetupForBinding(rootContentPage, rootContentViewModel, rootContentRequest);
}
else
{
rootContentPage = new ContentPage();
}
var navPage = new NavigationPage(rootContentPage);
//Hook to Popped event to launch RootContentPageActivated if proceeds
navPage.Popped += (sender, e) =>
{
if (navPage.Navigation.NavigationStack.Count == 1)
{
RootContentPageActivated();
}
};
mainPage = new MasterDetailPage
{
Master = page,
Detail = navPage
};
_mvxFormsApp.MainPage = mainPage;
CustomPlatformInitialization(mainPage);
}
else
{
// Functionality for clearing the navigation stack before pushing to new Page (for example in a menu with multiple options)
if (request.PresentationValues != null)
{
if (request.PresentationValues.ContainsKey("NavigationMode") && request.PresentationValues["NavigationMode"] == "ClearStack")
{
mainPage.Detail.Navigation.PopToRootAsync();
if (Device.Idiom == TargetIdiom.Phone)
{
mainPage.IsPresented = false;
}
}
}
try
{
var nav = mainPage.Detail as NavigationPage;
// calling this sync blocks UI and never navigates hence code continues regardless here
nav.PushAsync(page);
}
catch (Exception e)
{
Mvx.Error("Exception pushing {0}: {1}\n{2}", page.GetType(), e.Message, e.StackTrace);
return(false);
}
}
return(true);
}
