N=1: TipCalc - a second example - adding IoC and the Xamarin Android Designer (N+1 days of MvvmCross)

Following on from yesterday's first app, today we build a Tip Calculation app for WindowsPhone, Xamarin.Android, WindowsStore and Xamarin.iOS


This walkthrough provides a second example of using the MvvmCross Nuget packages to create a new app.


It repeats many of the steps from yesterday, but also adds:

• the use of IoC to create a Service and to automatically inject that Service into the ViewModel constructor
• the use of Slider (Windows), UISlider (iOS), and SeekBar (Android) in databinding
• some simple use of the Android designer to create a UI - you'll quickly see that I'm not a power user of this designer :)

The code is up on:

• https://github.com/slodge/NPlus1DaysOfMvvmCross/tree/master/N-01-TipCalc

To use this code, users will need to:

• install Visual Studio 2012 - Pro - or higher
• install Xamarin.Android and Xamarin.iOS
• install the PCL reference assembly XML files - see notes in http://slodge.blogspot.co.uk/2013/04/my-current-pcl-setup-in-visual-studio.html
• install the Beta of NuGet 2.5 - https://nuget.codeplex.com/

The video is:





Sorry about the indecision between int's and double's at 4 minutes in :) Not feeling very decisive this morning!


For a longer (and slightly-out-of-date) TipCalc tutorial, try http://www.codeproject.com/Articles/566191/MvvmCross-v3-Writing-a-First-App



Previously in N+1:

• N=0 - a first application - http://slodge.blogspot.co.uk/2013/04/n0-first-mvvmcross-application-n1-days.html