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Android Developers Backstage · February 18 · 1 hr 6 min

What's so great about R8?

Join hosts Tor and Romain as they sit down with Søren Gjesse, Chris Craik, and Shai Barack. This week, the team dives into R8, the whole-program optimizer that handles the "last mile" of your code before it runs on a device. Learn why implementing R8 is effectively like giving your users a "free hardware upgrade" by making their current devices perform like models that are years newer. Enable app optimization → https://goo.gle/R8-Optimizer Chapters: 0:00 - Intro 0:23 - What is R8? 1:16 - R8 vs D8 1:40 - Tree Shaking & Dead Code 4:14 - Handling Reflection 10:10 - Performance Co-Optimization 13:03 - Kotlin-Specific Gains 16:22 - Real-World Impact 41:50 - Jetpack Compose & R8 50:51 - Keep annotations 1:03:49 - The "Free Hardware Upgrade"

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Join hosts Tor and Romain as they sit down with Søren Gjesse, Chris Craik, and Shai Barack.

This week, the team dives into R8, the whole-program optimizer that handles the "last mile" of your code before it runs on a device. Learn why implementing R8 is effectively like giving your users a "free hardware upgrade" by making their current devices perform like models that are years newer.

Enable app optimization → https://goo.gle/R8-Optimizer

Chapters: 0:00 - Intro 0:23 - What is R8? 1:16 - R8 vs D8 1:40 - Tree Shaking & Dead Code 4:14 - Handling Reflection 10:10 - Performance Co-Optimization 13:03 - Kotlin-Specific Gains 16:22 - Real-World Impact 41:50 - Jetpack Compose & R8 50:51 - Keep annotations 1:03:49 - The "Free Hardware Upgrade"

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