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.

Understanding Auto Layout Constraints for iOS Development

EXC_BAD_ACCESS on Retrieving NSData: A Deep Dive into Objective-C Property Access

Understanding the Limitations of UIWebView for Complex Layouts: A Practical Guide to Centering Images and More

Enterprise App Verification on Android Devices: A Comprehensive Guide to Troubleshooting

Fixing WKWebView Page Overlap with Transparent Status Bar on iOS

Creating a Forever Scroll Ground in SpriteKit: A Comprehensive Guide to Infinite Scrolling Animations

Understanding and Fixing the BSON::InvalidDocument Error When Uploading Files in Ruby on Rails with iOS

Customizing iPhone Keyboard Animation Rate for a Smooth User Experience

Understanding the Benefits of Server-Side App Store Receipt Validation for iOS Developers