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iOS 5 Programming Cookbook

iOS 5 Programming Cookbook

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Contents

Table of Contents

iOS 5 Programming Cookbook

A Note Regarding Supplemental Files

1.0. Introduction

1.1. Creating a Simple iOS App in Xcode

1.2. Understanding Interface Builder

1.3. Compiling iOS Apps

1.4. Running iOS Apps on the Simulator

1.5. Running iOS Apps on iOS Devices

1.6. Packaging iOS Apps for Distribution

1.7. Declaring Variables in Objective-C

1.8. Allocating and Making Use of Strings

1.9. Comparing Values in Objective-C with an If Statement

1.10. Implementing Loops with For Statements

1.11. Implementing While Loops

1.12. Creating Custom Classes

1.13. Defining Functionality for Classes

1.14. Defining Two or More Methods with the Same Name

1.15. Allocating and Initializing Objects

1.16. Adding Properties to Classes

1.17. Moving From Manual Reference Counting to Automatic Reference Counting

1.18. Typecasting with Automatic Reference Counting

1.19. Delegating Tasks with Protocols

1.20. Determining Whether Instance or Class Methods Are Available

1.21. Determining Whether a Class Is Available at Runtime

1.22. Allocating and Making Use of Numbers

1.23. Allocating and Making Use of Arrays

1.24. Allocating and Making Use of Dictionaries

1.25. Allocating and Making Use of Sets

1.26. Creating Bundles

1.27. Loading Data From the Main Bundle

1.28. Loading Data From Other Bundles

1.29. Sending Notifications with NSNotificationCenter

1.30. Listening for Notifications Sent From NSNotificationCenter

2. Implementing Controllers and Views

3. Constructing and Using Table Views

6. Core Location and Maps

7. Implementing Gesture Recognizers

8. Networking, JSON, XML, and Twitter

9. Audio and Video

10. Address Book

11. Camera and the Photo Library

12. Multitasking

14. Dates, Calendars, and Events

15. Graphics and Animations

16. Core Motion

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Help

1.5. Running iOS Apps on iOS Devices

Problem

You’ve created an iOS App and now you want to run it on a device.

Solution

Simply plug your device into your computer using the USB cable that comes with your device. Follow the steps in Recipe 1.4 to make sure you have selected the right project in Xcode. Instead of choosing the simulator (as shown in Recipe 1.4) in the Scheme breadcrumb button, choose your device, go to Product, and press Run.

Discussion

Each version of Xcode supports a series of iOS versions. By support I mean that the latest version of Xcode, for instance, may not be capable of compiling and running an iOS app on a second generation iPod touch with iOS 3.0 installed on it. The reason is that the utilities built for each version of Xcode allow you to run your iOS apps on a limited number of versions of iOS on devices. The same is true for iOS Simulator. If you download the latest version of Xcode, you will notice that you might only be able to simulate your apps on iOS Simulator 5.0 and nothing before that.

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