While this book is about Xamarin.Forms, we will also highlight the differences between using traditional Xamarin and Xamarin.Forms. Traditional Xamarin is used when developing apps that use iOS and an Android Software Development Kit (SDK) without any means of abstraction. For example, we can create an iOS app that defines its UI in a storyboard or in the code directly. This code would not be reusable for other platforms, such as Android. Apps built using this approach can still share non-platform-specific code by simply referencing a .NET standard library. This relationship is shown in the following diagram:
Xamarin.Forms, on the other hand, is an abstraction of the GUI, which allows us to define UIs in a platform-agnostic way. It still builds on top of Xamarin.iOS, Xamarin.Android, and all the other supported platforms. The Xamarin.Forms app can be created as a .NET standard library or as a shared code project, where...
