Summary

Fully updated for Apple's latest improvements, Learning Objective-C 2.0, Second Editionwill help any new Objective-C programmer get productive fast. Long-time OS X and iOS developer Robert Clair first reviews the essential object and C concepts that all Objective-C developers need to know. Next, he introduces the basics of the language, walking through code examples one line at a time, and explaining what's happening "behind the scenes." He progresses to increasingly sophisticated techniques in areas ranging from frameworks and security to memory management - all carefully chosen for their value in real-world, day-to-day programming. This edition's extensive new coverage includes: * A clear and practical introduction to Apple's new ARC memory management (including when and when not to use it) * Expanded and improved coverage of blocks * Xcode 4.2, the LLVM compiler, and the LLDB debugger This is the perfect entry-level guide for Objective-C newcomers. Readers who complete it can move on to Stephen Kochan's highly-regarded Programming in Objective-C 2.0, and to our more specialized Apple development titles, such as David Chisnall's Cocoa Programming Developer's Handbook, Fritz Anderson's Xcode 4 Unleashed, Second Edition," and Aaron Hillegass's Cocoa Programming for Mac OS X, Fourth Edition.

Author Biography

Robert Clair has been doing OS X development for more than ten years and iOS development since the original iOS SDK became available. He writes apps for his own company, Chromatic Bytes, LLC, and is also a leading OS X and iOS contract developer who specializes in the complete design and coding of graphics intensive programs, and in repairing defective Objective-C code. He recently served as lead programmer for The Street’s iPad app, and for Heritage Associates’ iPad auction catalog. Through Chromatic Bytes, he created the innovative iOS apps ZeusDraw Mobile and Orfeo. He holds a Ph.D. in experimental physics from the University of California, Berkeley.

Dedication

Acknowledgements

About the Author

Preface

Part I: Introduction to Objective-C

Chapter 1: C, The Foundation of Objective-C

The Structure of a C Program

Variables

Operators

Expressions and Statements

Program Flow

Preprocessor

Command Line Compiling and Debugging

Summary

Exercises

Chapter 2: More About C Variables

Memory Layout of a C Program

Automatic Variables

External Variables

Declaration Keywords

Scope

Dynamic Allocation

Summary

Exercises

Chapter 3: An Introduction to Object-Oriented Programming

Object-Oriented Programming

An Introduction to Objective-C

Objective-C Additions

Summary

Chapter 4: Your First Objective-C Program

Building with Xcode

Objective-C Program Structure

An Object-Oriented Hello World

main.m

Summary

Exercises

Part II: Language Basics

Chapter 5: Messaging

Methods

Messaging

Messaging Details

Under the Hood

Message Forwarding

Efficiency

Introspection and Other Runtime Fun

Summary

Exercises

Chapter 6: Classes and Objects

Defining a Class

Subclassing a Class

Creating Objects

Destroying Objects

Copying Objects

Summary

Exercises

Chapter 7: The Class Object

Class Objects

Other Class Methods

Mimicking Class Variables

Summary

Exercises

Chapter 8: Frameworks

What Is a Framework?

Cocoa And Cocoa Touch

AppKit

UIKit

Core Foundation

Core Graphics

Core Animation

Other Apple-Supplied Frameworks

Third-Party Frameworks

Under the Hood

Summary

Chapter 9: Common Foundation Classes

Immutable and Mutable Classes

Class Clusters

NSString

Collection Classes

NSNumber

NSNull

NSData

NSURL

Objective-C Literals and Object Subscripting

Structures

Geometry Structures on iOS

Summary

Exercises

Chapter 10: Control Structures in Objective C

if Statements

for Statements and Implicit Loops

while Statements and NSEnumerator

Fast Enumeration

An Example Using Fast Enumeration

Exceptions

Summary

Exercises

Chapter 11: Categories, Extensions, and Security

Supplemental Materials

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