Book Image

Xamarin Cross-Platform Development Cookbook

By : George Taskos
Book Image

Xamarin Cross-Platform Development Cookbook

By: George Taskos

Overview of this book

<p>You can create native mobile applications using the Xamarin Forms platform for the three major platforms iOS, Android, and Windows Phone. The advantage of this is sharing as much code as you can, such as the UI, business logic, data models, SQLite data access, HTTP data access, and file storage across the three major platforms.</p> <p>This book provide recipes on how to create an architecture that will be maintainable, extendable, use Xamarin Forms plugins to boost productivity, customize your views per platforms, and use platform-specific implementations at runtime.</p> <p>We start with a simple creation of a Xamarin Forms solution with the three major platforms. We will then jump to XAML recipes and you will learn how to create a tabbed application page, and customize the style and behavior of views for each platform. Moving on, you will acquire more advanced knowledge and techniques while implementing views and pages for each platform and also calling native UI screens such as the native camera page.</p> <p>Further on, we demonstrate the power of architecting a cross-platform solution and how to share code between platforms, create abstractions, and inject platform-specific implementations. Next, you will utilize and access hardware features that vary from platform to platform with cross-platform techniques. Well then show you the power of databinding offered by Xamarin Forms and how you can create bindable models and use them in XAML. You will learn how to handle user interactions with the device and take actions in particular events.</p> <p>With all the work done and your application ready, you will master the steps of getting the app ready and publishing it in the app store.</p>
Table of Contents (18 chapters)
Xamarin Cross-Platform Development Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Performing CRUD operations in SQLite


CRUD operations (create, read, update, delete) are the four basic functions in persistent storage. Whatever the storage option, you will need to perform these actions.

There are patterns and best practices to achieve reusable data access components and the most common implementation is the Repository Pattern. In this recipe, we create a generic repository that we use to perform CRUD operations against a SQLite database.

How to do it…

  1. In Visual Studio, create a Blank App (Xamarin.Forms Portable) project named XamFormsCRUDSQLite from the top menu, File | New | Project….

  2. For all the projects in the solution, we need the SQLite.Net-PCL and SQLite.Net.Async-PCL NuGet packages. Right-click on every project and choose Manage NuGet Packages; search and install the packages.

  3. Create a folder named Data: in the XamFormsCRUDSQLite PCL, right-click Add | New Folder.

  4. In the newly created folder, we assume that you created ISQLiteAsyncConnectionService and also the platform...