Get a solid grounding in the fundamentals of Cocoa Touch, and avoid problems during iPhone and iPad app development. With this revised and expanded edition, youa??ll dig into Cocoa and learn how to work effectively with Objective-C and Xcode. This book covers iOS 5 and Xcode 4.3 in a rigorous, orderly fashiona??ideal whether youa??re approaching iOS for the first time or need a reference to bolster existing skills. Many discussions have been expanded or improved. All code examples have been revised, and many new code examples have been added.The new memory management systema??ARCa??is thoroughly explained and all code examples have been revised to use it. New Objective-C features, such as declaration of instance variables in the classa??s implementation section, are described and incorporated into the revised example code. Discussion of how an app launches, and all code examples, are revised for project templates from Xcode 4.2 and later. Other new Xcode features, including the...