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 com.facebook.sdk.login Error 301: A Guide for iOS Developers

Implementing Google Analytics on iOS: A Step-by-Step Guide for Tracking User Interactions with the SDK v3

Understanding Classic Bluetooth Device Development for iOS App Creation

Understanding Objective-C Inheritance and Class Definitions: A Guide to Writing Effective Code

Understanding Table View Selection Events in iOS: A Guide to Implementing tableView:didSelectRowAtIndexPath

Understanding Pie Charts and Animation in iOS 7: A Step-by-Step Guide to Creating Custom Pie Charts

Implementing Date Field Input in Your App: A Step-by-Step Guide

Optimizing Storage for In-App Purchases: A Comparison of Plists, NSUserDefaults, and SQLite Databases

Understanding Runloops and Application:didFinishLaunchingWithOptions Message Order in iOS Development