Hero iOS

Hero is a library for building iOS view controller transitions. It provides a declarative layer on top of the UIKit’s cumbersome transition APIs—making custom transitions an easy task for developers. Hero is similar to Keynote’s Magic Move. It checks the heroID property on all source and destination views. Every matched view pair is then automatically transitioned from its old state to its new state. Hero can also construct animations for unmatched views. It is easy to define these animations via the heroModifiers property. Hero will run these animations alongside the Magic Move animations. All of these animations can be interactively controlled by user gestures. By default, Hero provides dynamic duration based on the Material Design Motion Guide. Duration is automatically determined by changes to distance and size—saving you the hassle, while providing consistent and delightful animations.