I'm sometimes asked how to implement the background of an app I'm making called Four Choice Chemistry, so I wrote a sample code for it. Read more

This is an implementation sample of PageViewController, which is often used for tutorial screens and e-book readers.

Here's a sample of how to create and display a custom view in your code. I like to implement it without using xib or storyborad, but what's best? Read more

This is the code to add UINavigationController to UITabBarController. Implemented by including UINavigationBarController in UITabBarController. The implementation of UITabBarController is here. Implementing NavigationController

This is a sample implementation of UITabBarController, which is used to switch views. The icon for UITabBarController is a 30×30 transparent png.