public PageOne()
{
this.InitializeComponent();
Debug.WriteLine(string.Format("Creating: {0}", GetType().Name));
ViewModel = new PageOneViewModel(NestedNavigationServiceProvider.GetNavigationService());
}
public PageThree()
{
this.InitializeComponent();
Debug.WriteLine(string.Format("Creating: {0}", GetType().Name));
NavigationCacheMode = NavigationCacheMode.Enabled;
ViewModel = new PageThreeViewModel(NestedNavigationServiceProvider.GetNavigationServiceAndRegisterFrame(FrameTargets.SubFrame, this.SubFrame));
}
protected override void OnLaunched(LaunchActivatedEventArgs e)
{
var mainPage = Window.Current.Content as MainPage;
if (mainPage == null)
{
mainPage = new MainPage();
if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
{
//TODO: Load state from previously suspended application
}
Window.Current.Content = mainPage;
NestedNavigationServiceProvider.GetNavigationService().Navigated += OnNavigated;
SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;
SetBackButtonVisibility();
}
Window.Current.Activate();
}
public MainPage()
{
this.InitializeComponent();
ViewModel = new MainViewModel(NestedNavigationServiceProvider.GetNavigationServiceAndRegisterFrame(FrameTargets.RootFrame, RootFrame));
}
private void SetBackButtonVisibility()
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = NestedNavigationServiceProvider.GetNavigationService().CanGoBack
? AppViewBackButtonVisibility.Visible
: AppViewBackButtonVisibility.Collapsed;
}
private void OnBackRequested(object sender, BackRequestedEventArgs e)
{
NestedNavigationServiceProvider.GetNavigationService().GoBack();
}
