Book Image

Xamarin Mobile Development for Android Cookbook

By : Matthew Leibowitz
Book Image

Xamarin Mobile Development for Android Cookbook

By: Matthew Leibowitz

Overview of this book

Xamarin is used by developers to write native iOS, Android, and Windows apps with native user interfaces and share code across multiple platforms not just on mobile devices, but on Windows, Mac OS X, and Linux. Developing apps with Xamarin.Android allows you to use and re-use your code and your skills on different platforms, making you more productive in any development. Although it’s not a write-once-run-anywhere framework, Xamarin provides native platform integration and optimizations. There is no middleware; Xamarin.Android talks directly to the system, taking your C# and F# code directly to the low levels. This book will provide you with the necessary knowledge and skills to be part of the mobile development era using C#. Covering a wide range of recipes such as creating a simple application and using device features effectively, it will be your companion to the complete application development cycle. Starting with installing the necessary tools, you will be guided on everything you need to develop an application ready to be deployed. You will learn the best practices for interacting with the device hardware, such as GPS, NFC, and Bluetooth. Furthermore, you will be able to manage multimedia resources such as photos and videos captured with the device camera, and so much more! By the end of this book, you will be able to create Android apps as a result of learning and implementing pro-level practices, techniques, and solutions. This book will ascertain a seamless and successful app building experience.
Table of Contents (20 chapters)
Xamarin Mobile Development for Android Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Accessing data with SQLite.NET


Many apps need to use databases, whether the app is database-centric or even just to store pieces of data in a structured form. A lightweight ORM can be used to make data access easier.

How to do it...

Accessing the database is very easy when using SQLite.NET, especially since we don't have to write a single line of SQL. Let's take a look at the following steps:

  1. Before we can make use of SQLite.NET, we need to add the component. Right-click on the Components folder in the project and click on Get More Components…. In the dialog that appears, we search for and add the SQLite.NET component.

  2. Once the component is downloaded, we can start creating the C# types that will represent the tables:

    public class MyTable {
      [AutoIncrement, PrimaryKey]
      public int Id { get; set; }
      public string FirstName { get; set; }
      public string LastName { get; set; }
    }
  3. Now that we have our tables, we can choose where we want the database to be created to or accessed from:

    var databasePath...