Understanding Auto Layout and Constraints in iOS: Mastering Size Classes, Constraints, and Orientation Variations for Seamless User Interface Design

Distributing Mobile Apps Beyond the App Store: Challenges and Solutions for Large-Scale Deployment

Understanding PDFs in iOS: Can You Open a PDF While it's Being Downloaded?

Understanding iPad-Specific Nib Loading in iOS Apps: Best Practices for Handling UI User Interface Idiom

Handling View Selection for iPad and iPhone Devices: Best Practices for iOS App Development

Retrieving Peripherals with Identifiers Using CoreBluetooth in iOS 7

Troubleshooting Issues with Forward and Backward Play Buttons in MPMoviePlayerController

Mastering UILabel Alpha: How to Set Transparent Backgrounds Without Text Fade

Mastering SpriteKit's Warp Geometry Support for Dynamic 2D Game Development

Based on the provided code snippet, I will write a complete example of how to use `UIViewControllers` and a `UISplitView` together with presenting modal view controllers.