Understanding iOS Views and View Controllers: Decoupling with Notification Center

Switching Between View Controllers Without Using Segues

Rotating Only One View Controller in a Tabbed Application: A Deep Dive into iOS Deployment Options and Interface Orientations

Understanding iOS Device Orientation Management: Why shouldAutorotateToInterfaceOrientation Is Called Multiple Times

To add a constant value in both portrait and landscape orientations, you can use the following code:

Understanding UIScrollView and UIViewController in iOS Development: Mastering the Basics of Scroll Views and View Controllers

Integrating Cocos2D with UIViewController in iOS 4.2 for Enhanced Graphics Performance

Resolving "Could not find a storyboard named 'Main.storyboard' in bundle NSBundle" Error in iOS Development

Understanding the Rotation Methods in UIViewController: The Role of UIApplication

Dealloc Not Called in Contained View Controllers: Understanding the Issue and Solutions