Auto Layout by Example 

Session 232 WWDC 2012

Auto layout is a powerful constraint-based layout engine that can handle an amazing variety of user interfaces. This session pulls together API and technique to demonstrate how to build a wide range of interfaces. Learn how to construct common layout scenarios. From simple "button and text field" layouts all the way up to dynamic splitviews with interface elements that are dependent on each other, you will learn crucial skills to implement any type of user interface.