Optimizing Render Performance of Jetpack Compose
summary
Measured render times show 1400 ms vs 345 ms (Compose vs XML) on low-end phones; switching to release with R8 cuts Compose by ~65% to ~540 ms, and baseline JIT profiles shave another ~15%. The concrete playbook: use R8/minified release builds when measuring and shipping, avoid many Compose-in-XML wrappers, pre-initialize Compose on splash to pay the singleton cost early (observed ~330 ms warmup), make view state stable or hoist state into smaller composables, and install baseline profiles with profile installer.
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chapters (8)
- 0:00Introduction and background
- 4:24Performance gap discovery
- 10:31Debug vs release builds
- 15:07First composition initialization
- 22:56Stable parameters and recomposition
- 25:24Compose library benefits and trade-offs
- 32:47JIT compilation and baseline profiles
- 34:12Compose adoption benefits
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