Sams Teach Yourself Objective-C in 24 Hours > Part II. Working with the Objective-C Basics > Hour 12. Routing Messages with Selectors

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Sams Teach Yourself Objective-C in 24 Hours

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Introduction

Part I. Getting Started with Objective-C

Part II. Working with the Objective-C Basics

Hour 6. Exploring Messaging and a Testbed App

Hour 7. Declaring a Class in an Interface File

Hour 8. Declaring Instance Variables in an Interface File

Hour 9. Declaring Properties in an Interface File

Hour 10. Declaring Methods in an Interface File

Hour 11. Declaring Actions in an Interface File

Hour 12. Routing Messages with Selectors

Getting Inside Objective-C Messages

Getting Inside the Objective-C Runtime

Working with SEL and @selector ()

Using performSelector

Using NSInvocation

Testing Whether an Instance Can Respond to a Selector

Summary

Q&A

Workshop

Hour 13. Building on the Foundation

Hour 14. Defining a Class in an Implementation File

Hour 15. Organizing Data with Collections

Hour 16. Managing Memory and Runtime Objects

Part III. Expanding and Extending Classes

Part IV. Beyond the Basics

Part V. Appendixes

Index

Hour 12. Routing Messages with Selectors

What You’ll Learn in This Hour

• Understanding the Target-Action Pattern

• Using SEL and @selector

• Invoking Selectors with NSInvocation

• Managing Messages with Runtime Tools

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Contents

Part II. Working with the Objective-C Ba... > Hour 12. Routing Messages with Selec...

Hour 12. Routing Messages with Selectors