Fully Optimized: Wrapping up Performance Spotlight Week

Ben Weiss and Sara Hamilton from Google wrap up Performance Spotlight Week with a roadmap to faster Android apps. Reddit cut ANR errors by 30% with one configuration change.

Google's Performance Spotlight Week delivered five days of optimization guidance for Android developers. The series covered everything from R8 optimizer best practices to Jetpack Compose performance improvements, culminating in a comprehensive performance measurement framework. This wrap-up post serves as your index to all the resources shared.

Key Takeaways

• Reddit achieved 40% faster cold startup by enabling R8 full mode
• Disney+ removed one flag (dontoptimize) and saw significant performance gains
• New Performance Leveling Guide breaks measurement into five progressive steps
• Android Studio Narwhal now auto-deobfuscates stack traces in Logcat
• Baseline Profiles improved Meta's app metrics by up to 40%

The new Background Task Inspector reveals why your WorkManager tasks are delayed, plus there's a hidden lint check that catches overly-broad Keep Rules before they cause problems.