Overcome the vexing issues youll inevitably confront when creating apps for the iPhone, iPad, or iPod touch. By making use of new and revised recipes in this updated cookbook, youll quickly learn the steps necessary to write complete iOS appsincluding ways to store and protect data, enhance and animate graphics, manage files and folders, and take advantage of Passbook.Thoroughly updated for iOS 6 SDK, this cookbook shows you how to use hundreds of techniques to solve problems that developers of all levels commonly face. Each recipe includes sample code you can use right away.Use Pass Kit to deliver digitally-signed passes such as loyalty cardsDefine the layout of UI elements with Cocoa Auto LayoutDevelop location-aware appsGet working examples for implementing gesture recognizersUse new Objective-C Runtime featuresPlay audio and video files and access the iPod libraryRetrieve contacts and groups from the Address BookDetermine camera availability and access the Photo LibraryCreate multitasking-aware appsUse Event Kit to manage calendars, dates, and eventsApply the accelerometer and gyroscopeEnhance your app with the iCloud service.