iPhone OS - IOS
Installing Xcode on Mac OS X
Xcode may or may not be pre-installed on your Mac OS X system. To find out if you already have it, open the Finder and look for it in the Developer subfolder of the Applications folder. If the Developer folder does not exist, or does not contain Xcode then you will need to install it.
The best way to obtain Xcode is to download it from the Apple web site. It can also be installed from the Developer Tools installation disk if you happen to have one, but most Mac systems do not ship with this. The URL to download Xcode is http://developer.apple.com/technology/xcode.html.
Lesson 1 - Hello World App
So you've got a Mac, you've got an iPhone, and you really want to start writing some apps. There's tons of documentation available, but the best way to learn a new language and framework is to simply dive right in. All of the documentation and tutorials I ran across when learning to program the iPhone depended a little too much on Interface Builder, which basically sticks a layer of magic between me and what I want to do. Frankly, I like to begin at the bottom and work my way up, which is why this tutorial is going to show you how to create a basic 'Hello World' application programmatically - without the help of a visual designer.
Lesson 2 - Creating Your First iPhone Application with Interface Builder
Interface Builder is good tool for building complex user interfaces for the Mac and iPhone platform. It is, however, a non intuitive program when you first start using it - at least it was for me. This tutorial is here to explain how to use Interface Builder to build your first iPhone application.
Lesson 3 - Connecting Code to An Interface Builder View
In this tutorial, I will show you how to create an interface using Interface Builder and connect it to your code. We will be creating a UITextField, UILabel, and a Button. Now, don’t be intimidated that this tutorial is so long. I have really went into detail explaining everything as I go. You could easily scan over it and get the gist of it. Here’s how the application will work:
Lesson 4 - Transitioning Between Views
This tutorial will focus on transitioning from one view to another. We will be utilizing Apple’s UINavigationController. I will be using the code from the “Hello World” tutorial that I previously wrote. So if you have not completed it yet, go ahead and do it and come back to this page. (It’s quick I promise)