Book Image

Mastering Xamarin UI Development - Second Edition

By : Steven F. Daniel
Book Image

Mastering Xamarin UI Development - Second Edition

By: Steven F. Daniel

Overview of this book

This book will provide you with the knowledge and practical skills that are required to develop real-world Xamarin and Xamarin.Forms applications. You’ll learn how to create native Android app that will interact with the device camera and photo gallery, and then create a native iOS sliding tiles game. You will learn how to implement complex UI layouts and create customizable control elements based on the platform, using XAML and C# 7 code to interact with control elements within your XAML ContentPages. You’ll learn how to add location-based features by to your apps by creating a LocationService class and using the Xam.Plugin.Geolocator cross-platform library, that will be used to obtain the current device location. Next, you’ll learn how to work with and implement animations and visual effects within your UI using the PlatformEffects API, using C# code. At the end of this book, you’ll learn how to integrate Microsoft Azure App Services and use the Twitter APIs within your app. You will work with the Razor Templating Engine to build a book library HTML5 solution that will use a SQLite.net library to store, update, retrieve, and delete information within a local SQLite database. Finally, you will learn how to write unit tests using the NUnit and UITest frameworks.
Table of Contents (15 chapters)

Summary

In this chapter, we learned about the architecture behind the MVVM architecture pattern, as well as the different components and roles that they play. You then learned how to create an abstract BaseViewModel class that contained various properties with additional class methods.

We then created various ViewModel classes that inherited the properties and methods from our BaseViewModel class, and then proceeded to make some additional changes to each of the user interface ContentPages using XAML. Next, we updated each of the code-behind files for each of our ContentPages in order to implement the ViewModels so that the bindable object properties defined within the XAML could be bound to those properties defined within the associated ViewModel.

Lastly, you learned how to work with ContextActions and specified the associated Clicked method event for each menu item within the...