Book Image

Android Application Development Cookbook - Second Edition

By : Kyle Mew
Book Image

Android Application Development Cookbook - Second Edition

By: Kyle Mew

Overview of this book

The Android OS has the largest installation base of any operating system in the world; there has never been a better time to learn Android development to write your own applications, or to make your own contributions to the open source community! This “cookbook” will make it easy for you to jump to a topic of interest and get what you need to implement the feature in your own application. If you are new to Android and learn best by “doing,” then this book will provide many topics of interest. Starting with the basics of Android development, we move on to more advanced concepts, and we’ll guide you through common tasks developers struggle to solve. The first few chapters cover the basics including Activities, Layouts, Widgets, and the Menu. From there, we cover fragments and data storage (including SQLite), device sensors, the camera, and GPS. Then we move on more advanced topics such as graphics and animation (including OpenGL), multi-threading with AsyncTask, and Internet functionality with Volley. We’ll also demonstrate Google Maps and Google Cloud Messaging (also known as Push Notifications) using the Google API Library. Finally, we’ll take a look at several online services designed especially for Android development. Take your application big-time with full Internet web services without having to become a server admin by leveraging the power of Backend as a Service (BaaS) providers.
Table of Contents (23 chapters)
Android Application Development Cookbook Second Edition
Credits
Disclaimer
About the Authors
About the Reviewer
www.PacktPub.com
Preface
Index

Creating and using an SQLite database


In this recipe, we're going to demonstrate working with an SQLite database. If you are already familiar with SQL databases from other platforms, then much of what you know will apply. If you are new to SQLite, take a look at the reference links in the "See also" section as this recipe assumes a basic understanding of database concepts including schemas, tables, cursors, and raw SQL.

To get you up and running with an SQLite database quickly, our example implements the basic CRUD operations. Generally, when creating a database in Android, you create a class that extends SQLiteOpenHelper, which is where your database functionality is implemented. Here is a list of the functions to provide each of the basic operations:

  • Create: insert()

  • Read: query() and rawQuery()

  • Update: update()

  • Delete: delete()

To demonstrate a fully working database, we will create a simple Dictionary database, so we can store words and their definitions. We'll demonstrate the CRUD operations...