Split view controllers offer an easy and flexible way to get the very common master-detail style pattern into your app. In this short series, you’ll take an existing app built with a linear navigation stack and convert it to use a split view controller. Along the way, you’ll learn the tricks to get things working smoothly across devices and screen orientations. You should know the basics of iOS development and be familiar with storyboards and navigation controllers before starting this series.
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3326-split-view-controllers