Chris Adamson is a writer, editor, and independent developer specializing in media software development for iOS. He maintains a corporate identity as Subsequently & Furthermore, Inc. and writes the [Time code ]; blog on media software development, as well as tweeting as @invalidname.

Bill Dudney is a husband, father, coder, and teacher. He has been doing Objective-C since 1989 when he first encountered a NeXT cube, and has several apps on the store through his company, Gala Factory Software LLC. When he is not writing books or teaching people about iOS, he likes to ski and hike in the high country of Summit County, Colorado. You can connect with him on Twitter at @bdudney.

Since the iPhone’s launch in 2008, the iOS platform has added two new device families, thousands of new APIs, new tools and programming practices, and hundreds of thousands of new apps. iOS SDK Development is the second edition of the bestselling iPhone SDK Development, completely rewritten from the ground up to cover iOS 5’s new features.

You’ll get hands-on experience working with Objective-C and Xcode 4 as you work through this tutorial-style book with two experienced iOS developers by your side. Along the way, you’ll learn the fundamentals of maintainable, performant iOS programming, including:

Making apps that are multi-core-capable, testable, internationalizable, and that use less memory.

Understanding the underlying concepts of touch event handling, drawing and animation, multi-core concurrency, and memory management with iOS 5’s new Automatic Reference Counting.

Creating and using unit tests to ensure your app continues to work as intended even as the codebase evolves.

Working through Apple’s App Store processes, including preparing apps for submission, avoiding rejections, and understanding crash reports from end users.

Whether you’re a first-time iOS developer, or you’re looking to get up to speed with all the changes to Apple’s tools and frameworks, iOS SDK Development is the solid grounding you need to master this popular platform.

What You Need:

You need a Mac running Mac OS X Lion (10.7) and Xcode 4.