Modifiers are a foundational aspect of Jetpack Compose. When coding with everyone’s favourite declarative UI framework, you’ll constantly reach out into the rich grab bag of Modifiers that Compose provides. You don’t really need to understand how Modifiers’ internals work to be productive!

But sometimes, you’ll need something that’s not provided out of the box, and you may find yourself wondering what is the best approach to take to create your custom Modifier. This talk will guide you through the inner workings of a Modifier, the kinds of custom Modifiers you can create and when to use them, and provide a case study about implementing a Modifier and integrating it with the rest of the framework.