Hello World

This article describes a simple iPhone app. It is called HelloWorld, and will be used as an example as we proceed forward.


Hello World

The iOS developer site contains a useful tutorial for building a demo app:

• Your First iOS App

When you are done you will have an app to play with. Here is a screen shot:

Enter your name and press 'Hello' to display the friendly greeting:

What happens if you leave the name field empty?

Getting Started

This article explains where to sign up, what to download, and how to prepare your Mac for writing an iPhone app.


Getting Started

Here are the basic steps for getting started on writing an iPhone app.

• Upgrade to Mac OS X Lion (10.7).
• Register as an Apple Developer.
• Free
• Sign into the iOS Dev Center.
• Registration required
• Download the Xcode SDK. This includes:
• An IDE (integrated development environment)
• Instruments (a profiling tool)
• iOS Simulator (an iPhone simulation tool)
• Interface Builder (a tool for assembling your user interface)
• Watch some training videos.
• Check out the developer library.

That's enough to learn the foundation classes and prepare to build some demo app's.