Book Image

Xamarin Blueprints

By : Michael Williams
Book Image

Xamarin Blueprints

By: Michael Williams

Overview of this book

Do you want to create powerful, efficient, and independent apps from scratch that will leverage the Xamarin framework and code with C#? Well, look no further; you’ve come to the right place! This is a learn-as-you-build practical guide to building eight full-fledged applications using Xamarin.Forms, Xamarin Android, and Xamarin iOS. Each chapter includes a project, takes you through the process of building applications (such as a gallery Application, a text-to-speech service app, a GPS locator app, and a stock market app), and will show you how to deploy the application’s source code to a Google Cloud Source Repository. Other practical projects include a chat and a media-editing app, as well as other examples fit to adorn any developer’s utility belt. In the course of building applications, this book will teach you how to design and prototype professional-grade applications implementing performance and security considerations.
Table of Contents (14 chapters)
Xamarin Blueprints
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface

MVVMCross setup inside the PCL


Further into the MVVMCross framework, let's begin by building the MvxApplication class.

Note

This is not the same as the application class inside a Xamarin.Forms application.

public class App : MvxApplication 
    { 
        public override void Initialize() 
        { 
            CreatableTypes() 
                .EndingWith("Service") 
                .AsInterfaces() 
                .RegisterAsLazySingleton(); 
        } 
    } 

Pay attention to the CreatableTypes function being called; the function uses reflection to find all classes in the core assembly that are Creatable, meaning they have a public constructor and they are not abstract. Then, following this function, only register the class interfaces with their names ending in Service as lazy singletons.

Note

The lazy singleton ensures that if a class implements IOne and ITwo, then the same instance will be returned when resolving both IOne and ITwo.

There is one more part to add to the Application class...