The AppCoda beginning Swift book that I’m going through has a very helpful chapter on creating simple animations using the built-in CGAffineTransform methods. The book is primarily centered around a single project: building a restaurant rating and discovery app called FoodPin. Each chapter either builds new functionality into the app or improves its appearance. The “now you try it!” project at the end of the animation chapter asks you to create a custom share view that has two buttons slide in from the top and two from the bottom. This was my result…hopefully it’s sort of what they were going for!