New way of doing things in Android
summary
Covers concrete changes and how to use them: AndroidX breaks support libs into fine‑grained packages and uses AndroidX refactor in Android Studio with Jetifier to migrate binaries; App Bundles enable Play Store to generate split APKs reducing download size by about 20% via dynamic delivery; RTT API gives indoor Wi‑Fi ranging to ~1 meter accuracy without connecting to APs; demos show Layout Inspector, Android Studio Profiler (CPU memory network energy) and new notifications, deep links and Slices with actionable templates.
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