Book Image

Android 3.0 Application Development Cookbook

By : Kyle Merrifield Mew
Book Image

Android 3.0 Application Development Cookbook

By: Kyle Merrifield Mew

Overview of this book

<p>Android is a mobile operating system that runs on a staggering number of smartphones and tablets. Android offers developers the ability to build extremely rich and innovative applications written using the Java programming language. Among the number of books that have been published on the topic, what&rsquo;s missing is a thoroughly practical, hands-on book that takes you straight to getting your job done without boring you with too much theory.<br /><br />Android 3.0 Application Development Cookbook will take you straight to the information you need to get your applications up and running. This book is written to provide you with the shortest possible route between an idea and a working application. <br /><br />Work through the book from start to finish to become an Android expert, or use it as a reference book by applying recipes directly to your project.<br /><br />This book covers every aspect of mobile app development, starting with major application components and screen layout and design, before moving on to how to manage sensors such as internal gyroscopes and near field communications. Towards the end, it delves into smartphone multimedia capabilities as well as graphics and animation, web access, and GPS. <br /><br />Whether you are writing your first app or your hundredth, this is a book that you will come back to time and time again, with its many tips and tricks on the rich features of Android 3.</p>
Table of Contents (18 chapters)
Android 3.0 Application Development Cookbook
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Building a context sensitive menu


Very often we want our menus to present choices to the user in a context sensitive way, commonly achieved on PCs with a right-click. In Android a long click is used to produce such menus when they are available. All Android Views are capable of receiving this action and here we will create two different Views and connect them to a menu. Also we will examine one or two of the built-in features of the Android ContextMenu.

Getting ready

Just as in the previous two recipes, we will be defining a menu layout here in XML which we will then connect to our Views with Java using an activity callback. Start a new Android project in Eclipse and create a new folder res/menu.

How to do it...

  1. Within the res/menu folder, create an Android XML file called my_menu.xml.

  2. Complete my_menu.xml so that it contains two items, each with a title and an id, as we did before. You can of course copy much of this from the previous recipe if you wish:

    <?xml version="1.0" encoding="utf-8...