On PHPMaster.com today, they've started a new series about integrating two popular technologies - PHP and the Android OS - in this new tutorial from Matthew Turland. He'll show both sides of the code needed to get your Android app talking to a PHP backend.
This two-part article will guide you through the process of building an efficient PHP-based REST web service to be consumed by an Android-based application. Some of the concepts presented here are also applicable to other mobile platforms, such as iOS. I assume you already know the basics of PHP and Android development and that you have a suitable development environments set up for both. I'll focus mainly on showing you how to handle data serialization and compression in both environments.
In this first part, he starts from the client side, creating the code (Java) that's needed to create the connection to the backend. He stets it up as a background task so its execution won't block the main app from working. He shows how to execute it, running an "on create" method and checking to ensure the network is available for the request.