App.xaml.cs

using System;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.UI;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Navigation;
using Cirrious.CrossCore;
using Cirrious.MvvmCross.ViewModels;

namespace XXXX.WinUniversal
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App : Application
    {
        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            this.InitializeComponent();
            this.Suspending += OnSuspending;
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used such as when the application is launched to open a specific file.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override void OnLaunched(LaunchActivatedEventArgs e)
        {

#if DEBUG
            if (System.Diagnostics.Debugger.IsAttached)
            {
                //this.DebugSettings.EnableFrameRateCounter = true;
            }
#endif

            Frame rootFrame = Window.Current.Content as Frame;

            // Do not repeat app initialization when the Window already has content,
            // just ensure that the window is active
            if (rootFrame == null)
            {
                // Create a Frame to act as the navigation context and navigate to the first page
                rootFrame = new Frame();

                rootFrame.NavigationFailed += OnNavigationFailed;

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                }

                // Place the frame in the current Window
                Window.Current.Content = rootFrame;
            }

            if (rootFrame.Content == null)
            {
                // When the navigation stack isn't restored navigate to the first page,
                // configuring the new page by passing required information as a navigation
                // parameter
                var setup = new Setup(rootFrame);
                setup.Initialize();

                var startup = Mvx.Resolve<IMvxAppStart>();
                startup.Start();
            }
            // Ensure the current window is active
            Window.Current.Activate();
        }

        /// <summary>
        /// Invoked when Navigation to a certain page fails
        /// </summary>
        /// <param name="sender">The Frame which failed navigation</param>
        /// <param name="e">Details about the navigation failure</param>
        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private void OnSuspending(object sender, SuspendingEventArgs e)
        {
            var deferral = e.SuspendingOperation.GetDeferral();
            //TODO: Save application state and stop any background activity
            deferral.Complete();
        }
    }
}

HomeView.xaml

<views:MvxWindowsPage
    x:Class="XXXX.WinUniversal.Views.HomeView"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:views="using:Cirrious.MvvmCross.WindowsUWP.Views"
    mc:Ignorable="d">

<Grid Background="{ThemeResource BackgroundBrush}">
        <SplitView x:Name="RootSplitView"
                   DisplayMode="CompactInline"
                   IsPaneOpen="false"
                   CompactPaneLength="48"
                   OpenPaneLength="200"
                   PaneBackground="{ThemeResource BackgroundBrush}">
            <SplitView.Pane>
                <controls:NavMenuListView x:Name="NavMenuList"
                                          TabIndex="3"
                                          Margin="0,48,0,0"
                                          ScrollViewer.HorizontalScrollMode="Disabled"
                                          ScrollViewer.VerticalScrollMode="Disabled"
                                          ItemInvoked="NavMenuList_OnItemInvoked"
                                          ItemContainerStyle="{StaticResource NavMenuItemContainerStyle}"
                                          ItemTemplate="{StaticResource NavMenuItemTemplate}">
                    <controls:NavMenuListView.Footer>
                        <Button x:Name="SettingsButton"
                                ToolTipService.ToolTip="Settings"
                                TabIndex="4"
                                Style="{StaticResource NavigationSettingsButtonStyle}"
                                Width="{Binding ItemsPanelRoot.Width, ElementName=NavMenuList}"
                                HorizontalAlignment="{Binding ItemsPanelRoot.HorizontalAlignment, ElementName=NavMenuList}"
                                Foreground="{ThemeResource ForegroundBrush}"
                                Click="SettingsButton_OnClick" />
                    </controls:NavMenuListView.Footer>
                </controls:NavMenuListView>
            </SplitView.Pane>
            <SplitView.Content>
                <ScrollViewer HorizontalScrollMode="Disabled"
                              VerticalScrollBarVisibility="Auto">
                    <!-- OnNavigatingToPage we synchronize the selected item in the nav menu with the current page.
                         OnNavigatedToPage we move keyboard focus to the first item on the page after it's loaded. -->
                    <Frame x:Name="MainContent">
                        <Frame.ContentTransitions>
                            <TransitionCollection>
                                <NavigationThemeTransition>
                                    <NavigationThemeTransition.DefaultNavigationTransitionInfo>
                                        <EntranceNavigationTransitionInfo />
                                    </NavigationThemeTransition.DefaultNavigationTransitionInfo>
                                </NavigationThemeTransition>
                            </TransitionCollection>
                        </Frame.ContentTransitions>

                        <!--
                            You might want to add some initial content here, or in the `Init` of the HomeViewModel invoke another `ShowViewModel<T>();`
                            That would replace the empty frame with the contents of the corresponding view
                        -->
                    </Frame>
                </ScrollViewer>
            </SplitView.Content>
        </SplitView>
        
        <!-- Declared last to have it rendered above everything else, but it needs to be the first item in the tab sequence. -->
        <ToggleButton x:Name="TogglePaneButton"
                      TabIndex="1"
                      Style="{StaticResource SplitViewTogglePaneButtonStyle}"
                      IsChecked="{Binding IsPaneOpen, ElementName=RootSplitView, Mode=TwoWay}"
                      Unchecked="TogglePaneButton_Checked"
                      AutomationProperties.Name="Menu"
                      ToolTipService.ToolTip="Menu"
                      Foreground="{ThemeResource ForegroundBrush}" />
    </Grid>
</views:MvxWindowsPage>