MvvmCross - v3 - Writing a First App

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Introduction

MvvmCross is a truly cross-platform MVVM C# framework.

This series of articles will walk you through the use of MvvmCross to produce a first simple app - a TipCalculator.

Beyond this first walkthrough, there are many other things that MvvmCross can do - but this article will just stick to the basics for now!

Background

• MvvmCross is now 18 months old.
• This article is about v3 - code-named Hot Tuna.

Using the Code

The code for this article can be found here.

Setting up MvvmCross v3 is quite awkward at the moment - you need to setup Microsoft SDKs, Xamarin 2.0 products and some strange Portable Class Library (PCL) hacks.

This setup is documented here.

This setup is changing in the next few weeks - official Xamarin PCL support is coming - I will update this article when the new simpler steps arrive.

The Target

In this first Model-View-ViewModel project, we’ll aim to create a simple single screen cross-platform application for calculating the tip at a restaurant.

Here's a sketch of where we hope to end up:

The goals of this first application are all about introducing:

1. the general structure of MvvmCross applications
2. some of the code elements required in all MvvmCross applications
3. how data-binding support on Xamarin.Android and Xamarin.iOS (the products formerly known as Mono for Android and MonoTouch)

Within this guide, we won't attempt to provide any introduction to the Apple, Google, Microsoft, and Xamarin products and platforms - there are plenty of guides available already for all of those. Instead, we'll focus instead on pure, unadulterated MvvmCross Nirvana.

The Articles

• MvvmCross TipCalc - Step 1: Creating the Core Portable Application
• MvvmCross TipCalc - Step 2: Creating an Android UI
• MvvmCross TipCalc - Step 3: Creating an iOS UI
• MvvmCross TipCalc - Step 4: Creating a Windows Phone UI
• MvvmCross TipCalc - Step 5: Creating a Windows Store UI
• MvvmCross TipCalc - Step 6: Creating a WPF UI
• MvvmCross TipCalc - A Recap

History

• 22^nd March, 2013 - First submission