‘Litho is a declarative framework for building efficient user interfaces (UI) on Android. It allows you to write highly-optimized Android views through a simple functional API based on Java annotations. Litho uses a declarative API to define UI components. You simply describe the layout for your UI based on a set of immutable inputs and the framework takes care of the rest. With code generation, Litho can perform optimisations for your UI under the hood, while keeping your code simple and easy to maintain.’