Effective Android UI is a sample Android application created to demonstrate practical patterns for building maintainable user interfaces. It includes parallel examples of MVP and MVVM architectures without relying on a data-binding engine. The project demonstrates fragment usage, dependency injection with Dagger, and communication between fragments inside the same activity. Android resource qualifiers are used to adapt layouts to different screen sizes, densities, versions, and domains. It also explores themes, styles, navigation abstractions, reusable layouts, ListView recycling, and interactor-based application structure. ...