Book Image

Mastering Xamarin.Forms - Third Edition

By : Ed Snider
Book Image

Mastering Xamarin.Forms - Third Edition

By: Ed Snider

Overview of this book

Discover how to extend and build upon the components of the most recent version of Xamarin.Forms to develop an effective, robust mobile app architecture. This new edition features Xamarin.Forms 4 updates, including CollectionView and RefreshView, new coverage of client-side validation, and updates on how to implement user authentication. Mastering Xamarin.Forms, Third Edition is one of the few Xamarin books structured around the development of a simple app from start to finish, beginning with a basic Xamarin.Forms app and going step by step through several advanced topics to create a solution architecture rich with the benefits of good design patterns and best practices. This book introduces a core separation between the app's user interface and the app's business logic by applying the MVVM pattern and data binding, and then focuses on building a layer of plugin-like services that handle platform-specific utilities such as navigation and geo-location, as well as how to loosely use these services in the app with inversion of control and dependency injection. You’ll connect the app to a live web-based API and set up offline synchronization before testing the app logic through unit testing. Finally, you will learn how to add monitoring to your Xamarin.Forms projects to track crashes and analytics and gain a proactive edge on quality.
Table of Contents (12 chapters)

Getting Started

The goal of this book is to focus on how to apply best practices and patterns to mobile apps built with Xamarin.Forms, and not on the actual Xamarin.Forms toolkit and API itself. The best way to achieve this goal is to build an app end to end, applying new concepts in each chapter.

Therefore, the goal of this chapter is to simply put together the basic structure of a Xamarin.Forms mobile app code base, which will serve as a foundation that we can build from throughout the rest of this book.

In this chapter, we will do the following:

  • Introduce and define the features of the app that we will build throughout the rest of the book
  • Create a new Xamarin.Forms mobile app with an initial app structure and user interface

In the next chapter we'll introduce the Model-View-ViewModel (MVVM) pattern and add data bindings to the user interface we create in this chapter. From there we will build upon the app and its architecture, introducing best practices and patterns for things like platform-specific API dependencies, dependency injection, remote data access, authentication, and unit testing. But, just like the beginning of many new mobile projects, we will start with an idea.