With the introduction of AGP 8, a new API for bytecode manipulation was added to the world of Android build tools. Replacing the previous Transform API, which powered many tools used for everyday development, this new way aims at faster build speed and more flexibility for developers. Popular libraries like Realm have faced challenges to adapt to the new paradigm, but ultimately succeeded in pushing their product to the next stage of evolution.

This talk is the spiritual successor to my session about the now-removed Transform API from DroidKaigi 2019. It will introduce the new methods and classes developers can utilize to instrument their code, presenting the required steps to get started with this powerful set of tools.