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.

Resolving the Error `-[__NSCFDictionary _expandedCFCharacterSet]: Unrecognized Selector Sent to Instance` When Working with SBJSON in iOS Development

Retrieving iPhone Color using UIDevice and Lockdown.dylib: A Comprehensive Guide

Creating a Native iPhone Spinning Time Scroller in XPages Mobile Web Applications: A Step-by-Step Guide

Creating a Custom Calendar for iPhone and iPad: A Step-by-Step Guide

Understanding How to Create a Well-Laid UIPickerView for Different iPhone Resolutions

Unlocking the Power of UILocalNotifications on iOS: A Comprehensive Guide

Integrating Web Views into iOS Camera App: A Step-by-Step Guide

Alternatives to iPhone SDK on Windows: Workarounds for Developers

Understanding UITableView Deletion Control: A Deep Dive