React Native react-android 16 KB page-size fix: upgrade to 0.77.0

Artifact com.facebook.react:react-android · measured 2026-10-01 · all libraries

fixed

React Native react-android versions up to and including 0.76.9 that we measured ship 4 KB-aligned native libraries (offending for Google Play's 16 KB page-size requirement). The first measured aligned stable version is 0.77.0; the newest measured, 0.87.1, is aligned.

Caveats

The boundary is not exact: only prerelease or unlisted versions lie between the last offending and the first aligned version, so an earlier aligned stable version cannot be ruled out.
Sampled, not exhaustive: 77 of 244 published versions were measured with native code; unmeasured versions in between are unknown.

Measured evidence

	Version	Library file	p_align	File date	Source
Last offending	`0.76.9`	`jni/arm64-v8a/libc++_shared.so`	4 KB (2^12)	Thu, 03 Apr 2025 11:57:19 GMT	artifact
First aligned	`0.77.0`	`jni/arm64-v8a/libc++_shared.so`	16 KB (2^14)	Tue, 21 Jan 2025 12:04:18 GMT	artifact

p_align is the smallest PT_LOAD segment alignment of the ELF. 16 KB-compatible needs at least 16384 (2^14). Method: min PT_LOAD p_align of arm64-v8a/x86_64 .so inside the published AAR/JAR; aligned = >=16384 for every lib. Dates are repository file times, not official release dates.

Offending versions measured (20)

0.71.0, 0.71.0-rc.1, 0.71.0-rc.2, 0.71.0-rc.3, 0.71.0-rc.4, 0.71.0-rc.5, 0.71.0-rc.6, 0.71.1, 0.71.5, 0.71.15, 0.72.0-rc.6, 0.72.9, 0.73.0-rc.2, 0.73.3, 0.74.0-rc.2, 0.74.2, 0.75.0-rc.4, 0.76.0-rc.1, 0.76.4, 0.76.9

Native libraries seen: libc++_shared.so, libcxxcomponents.so, libfabricjni.so, libfb.so, libfbjni.so, libfolly_runtime.so, libglog.so, libglog_init.so, libhermes-executor-release.so, libhermes_executor.so, libhermesinstancejni.so, libhermestooling.so and 61 more.

The Gradle change

implementation("com.facebook.react:react-android:0.77.0")

an aligned version, lowest measured above the last offending one; newer measured versions are aligned too (latest 0.87.1). Check: ./gradlew :app:dependencyInsight --dependency react-android --configuration releaseRuntimeClasspath

Confirm what Gradle actually resolves, since another dependency may pull an older version:

./gradlew :app:dependencyInsight --dependency react-android --configuration releaseRuntimeClasspath

Re-verify it yourself

Download the artifact and run the free checker (check16k.py, Python 3, no dependencies):

curl -LO https://repo1.maven.org/maven2/com/facebook/react/react-android/0.77.0/react-android-0.77.0-release.aar
python3 check16k.py react-android-0.77.0-release.aar

Exit 0 = aligned, 1 = an unaligned library found. Better still, run it on your final .aab/.apk.

Need the full map for every library, not just React Native react-android?

The paid kit ($12, v2) contains the complete measured fix map for all 80+ libraries as JSON and a table, every raw per-version measurement, the spot-check evidence, and the step-by-step guide for Play's 16 KB requirement. This page and the checker script stay free.

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Related artifacts

fbjni (com.facebook.fbjni:fbjni)