Updated and expanded to cover iOS 5 and Xcode 4.3, iOS Programming: The Big Nerd Ranch Guide leads you through the essential concepts, tools, and techniques for developing iOS applications. After completing this book, you will have the understanding, the know-how, and the confidence you need to tackle iOS projects of your own. Based on Big Nerd Ranch’s popular iOS Bootcamp course and its well-tested materials and methodology, this best-selling guide teaches iOS concepts and coding in tandem. The result is instruction that is relevant and useful. Throughout the book, the authors clearly explain what’s important to know and share their insights into the larger context of the iOS platform. This gives you a real understanding of how iOS development works, the many features that are available, and when and where to apply what you’ve learned. Here are some of the topics covered:Xcode 4.3, Instruments, and StoryboardsARC, strong and weak references, and retain cyclesInterfacing with iCloudHandling touch events and gesturesTool bars, navigation controllers, and split view controllersLocalization and InternationalizationBlock syntax and useBackground execution and multi-taskingSaving/loading data: Archiving and Core DataCore Location and Map KitCommunicating with web services Working with XML, JSON, and NSRegularExpression  Using the Model-View-Controller-Store design pattern