Stack views are a great new introduction in iOS 9, allowing you to create horizontally and vertically arranged stacks of views without having to touch Auto Layout constraints. They’re super-simple to use, and have great support in interface builder – you’ll be building amazing layouts in no time at all. In this series you’ll learn everything from the basics of stack views, through building complex layouts and animation, to using UIStackView in code. If you aren’t up to speed with Auto Layout, you should check out our Auto Layout series.
This is a companion discussion topic for the original entry at https://www.raywenderlich.com/3942-introducing-stack-views