How to Fix 16KB Native Library Alignment Warning in Play Console

The Warning

Uploading your app to Play Console? You might see: 'Recompile your app with 16KB native library alignment.' Here's what it means and how to fix it.

Why It Happens

Android 12+ requires native libraries to align at 16KB. Older tools align at 4KB, causing this warning.

Impact

Alignment improves performance, security, and ensures future compliance with Google Play policies.

Fix 1

Update Android Gradle Plugin (AGP 7.2+) and Gradle (7.5+). Then clean and rebuild your project.

Fix 2

If using native C/C++ code, upgrade to NDK r23b or later and rebuild.

Unity

Unity developers: Upgrade to Unity 2021.3 LTS+ and ensure Gradle/NDK are updated.

React & Flutter

React Native: Update AGP, Gradle, and plugins. Flutter: Use Flutter 3.x+, clean and rebuild.

Expo

Expo projects: Update to the latest SDK or migrate to bare workflow with updated tools.

Best Practice

Keep Android Studio, AGP, Gradle, and SDKs updated. Future-proof your apps by fixing alignment now.

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