Coming back to MVVMCross and trying to create a new project, I found that some of the documentation available for the new version (4.2.2 at the time of writing this) is no longer correct; for example, the ToDo file in the sample projects still looks like this:
The steps to get this Store UI working are:
1. Add a reference to your Core PCL project
2. Change App.Xaml.cs so that it creates a ‘new Setup(RootFrame)’ during its OnLaunched:
protected override void OnLaunched(LaunchActivatedEventArgs args)
{
var 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();
if (args.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 start = MvvmCross.Core.Mvx.Resolve();
start.Start();
}
// Ensure the current window is active
Window.Current.Activate();
}
3. For Windows 8 – Add a views folder and a view – xaml.cs and .xaml based on BasicPage – this
will add 5 files to the Common folder.
– Change the Common/LayoutAwarePage.cs inheritance to MvvmCross.WindowsStore.Views.MvxStorePage
– Change the Common/LayoutAwarePage.cs – remove the OnNavigatedTo and OnNavigatedFrom handlers
– Add some content for your Xaml – e.g.
5. For Windows 8.1 – Add a views folder and a view based on the BasicPage template
– In the .xaml.cs – remove public NavigationHelper NavigationHelper and all referencing code
– In the .xaml.cs – remove the OnNavigatedTo and OnNavigatedFrom handlers
– Add some content for your Xaml – e.g.
This document was very useful. I was looking specifically at the Babel project in the above sample; this won’t compile under MvvmCross 4.2.2. I’ve listed here everything I needed to do to make it.
Mvx has now been replaced with MvxSimpleIoCContainer.Instance
In App.xaml.cs:
var start = MvxSimpleIoCContainer.Instance.Resolve<IMvxAppStart>();
Is now:
var start = MvxSimpleIoCContainer.Instance.Resolve<IMvxAppStart>();
start.Start();
In App.cs:
private void InitializeText()
{
var builder = new TextProviderBuilder();
Mvx.RegisterSingleton<IMvxTextProviderBuilder>(builder);
Mvx.RegisterSingleton<IMvxTextProvider>(builder.TextProvider);
}
Is now is a separate plug-in by the looks of things:

The new code is:
private void InitializeText()
{
var builder = new TextProviderBuilder();
MvxSimpleIoCContainer.Instance.RegisterSingleton<IMvxTextProviderBuilder>(builder);
MvxSimpleIoCContainer.Instance.RegisterSingleton<IMvxTextProvider>(builder.TextProvider);
}