Android at Cash App.
Benoit Quenaudon
Cash App
Sweet Architecture
How about unidirectional data flow in an architecture where views and presenters don’t know about each other? While growing up to 40+ engineers and 600+ modules, Cash App managed to control the complexity of its product. Views can be written in either Kotlin or XML; presenters with either Rx, Coroutines, or Compose; no problem. We test views on the JVM and we don’t need to define fake presenters either.
Writing new screens is delightful and we’ll see how we made it possible by:
- Looking at the foundations of the architecture: our internal navigation library which allows clear modularity,
- Checking how it can adapt to presenters using different technologies,
- Explaining how views are defined and tested,
- Seeing how everything is glued together from a bird’s-eye view of the app.
Growing your app and team doesn’t imply more pain nor more complexity. Attendees will gain a sound understanding about how we achieved it.