Introduction

To develop iPhone applications, you use Xcode, Apple’s first-class integrated development environment (IDE). Xcode provides all the tools you need to design your application’s user interface and write the code that brings it to life. As you develop your application, you run it on your computer, an iPhone, or an iPod touch.

This document describes the iPhone application development process. It also provides information about becoming a member of the iPhone Developer Program, which is required to run applications on devices for testing.

After you finish developing your iPhone application, you submit it to the App Store, the secure marketplace where iPhone OS users obtain their applications. However, you should test your application on a small set of users before publishing it to cover a wide variety of usage patterns and get feedback about your product. This document describes how to create a group of testers for your application and how to distribute it to them.

To take advantage of this document, you should be familiar with the iPhone application architecture, described in iPhone Application Programming Guide. You should also be familiar with basic programming concepts.

After reading this document, you’ll have a basic understanding of the iPhone application development process. To enhance that knowledge, you should read the documents listed later in this introduction.

If you’re interested in developing iPhone web applications, visit http://developer.apple.com/safari/library.

Organization of This Document

This document contains the following chapters:

• “iPhone Development Quick Start” provides an overview of the major development tasks you follow to design, build, and run an application using Xcode.

• “Configuring Applications” describes how to configure your application’s properties and entitlements, and how to adapt it so that it builds correctly in the iPhone simulator and device environments.

• “Running Applications” describes each of the steps required to run or debug your iPhone applications.

• “Using iPhone Simulator” describes the ways in which you use your computer’s input devices to simulate the interaction between iPhone users and their devices.

• “Managing Devices” shows how to configure your computer and your device for development; how to use the Xcode Organizer to view console logs or crash information, and take screen shots of applications running on your device; and how to safeguard the digital identifications required to install applications in development on devices.

• “Debugging Applications” describes the Xcode debugging facilities.

• “Unit Testing Applications” introduces unit testing and describes how you can take advantage of it in your projects.

• “Tuning Applications” describes Instruments and Shark, the tools you use to measure and tune your application’s performance.

• “Publishing Applications for Testing” describes the steps you need to perform to add testers to your team and shows how to view their crash logs. It also contains testing instructions for your testers.

• “iPhone Development FAQ” lists common questions developers ask about iPhone Simulator.

• “Hello, World! Source Code” contains the source code for the Hello, World! application described in “Tutorial: Hello, World!.”

• “Unit-Test Result Macro Reference” describes the test-result macros you can use in your unit-test methods.

• “iPhone Simulator Frameworks and Libraries” provides information about the frameworks and system libraries in the iPhone Simulator SDK

Installing the iPhone SDK

To install the tools you need to develop iPhone applications, including Xcode, iPhone Simulator, and others, visit http://developer.apple.com/iphone.

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