The team that brought you the bestselling Beginning iPhone 3 Development is back again, and this time they're offering the best coverage of Apple's new SDK 4 available anywhere. You'll see all of the new the technologies available with SDK 4-including multitasking, iAd, Game Center, and countless new APIs-and put them to good use creating your very own app for the iPhone, iPod touch, and iPad. Many of the discussion in the original book have been clarified and extended to include development techniques for the iPad, and all of the projects have been rebuilt from scratch using the SDK 4 templates. Assuming only a minimal working knowledge of Objective-C, and written in a friendly, easy-to-follow style, this book offers a complete soup-to-nuts course in iPhone and iPad programming. The book starts with the basics, walking you through the process of downloading and installing SDK 4, and then steps you though the creation of your first simple application. From there, you'll learn how to integrate all the interface elements Apple touch users have come to know and love, such as buttons, switches, pickers, toolbars, and sliders. You'll master a variety of design patterns, from the simplest single view to complex hierarchical drill-downs. The confusing art of table building will be demystified, and you'll see how to save your data using the iPhone file system. You'll also learn how to save and retrieve your data using SQLite, iPhone's built-in database management system. In addition, you'll also learn about Core Data, the standard for persistence that Apple introduced to iPhone with SDK 3. And there's much more! You'll learn to draw using Quartz 2D and OpenGL ES, add multitouch gestural support (pinches and swipes) to your applications, and work with the camera, photo library, accelerometer, and built-in GPS. You'll discover the fine points of application preferences and learn how to localize your apps for multiple languages. * The iPhone 4 update to the best-selling and most recommended book for Cocoa touch developers* Packed full of tricks, techniques, and enthusiasm for the new SDK from a developer perspective* Written in an accessible, easy-to-follow styleWhat you'll learn* Everything you need to know to develop your own best-selling iPhone and iPad apps* Best practices for optimizing your code and delivering great user experiences* How to create "universal" apps for both iPhone and iPadWho this book is for Everyone who wants to start developing for iPhone, iPod touch, and iPad!