Xamarin: Cross-Platform Mobile Application Development

Summary

In this chapter, we went through the concept of building a sample application called XamChat. We also implemented the core business objects for the application in the Model layer. Since we do not have a server to support this application yet, we implemented a fake web service. This gives you the flexibility to move forward with the app without building a server application. We also implemented the ViewModel layer. This layer will expose operations in a simple way to the View layer. Finally, we wrote tests covering the code we've written so far using NUnit. Writing tests against shared code in a cross-platform application can be very important, as it is the backbone of more than one application.

After completing this chapter, you should ...