ObjectBox 16 KB page-size fix: upgrade to 4.1.0

Artifact io.objectbox:objectbox-android · measured 2026-10-01 · all libraries

fixed

ObjectBox versions up to and including 4.0.3 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 4.1.0; the newest measured, 5.4.2, is no-native-64bit.

Caveats

NATIVES MOVED (latest has no 64-bit .so). Successor artifacts measured 2026-10-01 (data/successors-2026-10-01.json): objectbox-android-db:5.4.2 aligned. Only these versions were measured; any other successor version is UNVERIFIED
Sampled, not exhaustive: 27 of 43 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	`4.0.3`	`jni/arm64-v8a/libobjectbox-jni.so`	4 KB (2^12)	Tue, 15 Oct 2024 14:16:00 GMT	artifact
First aligned	`4.1.0`	`jni/arm64-v8a/libobjectbox-jni.so`	16 KB (2^14)	Thu, 30 Jan 2025 18:09:41 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 (18)

2.8.0, 2.9.1, 2.9.2-RC, 2.9.2-RC2, 2.9.2-RC3, 2.9.2-RC4, 3.0.0, 3.0.1, 3.1.1, 3.1.3, 3.2.1, 3.3.1, 3.4.0, 3.5.1, 3.7.0, 3.8.0, 4.0.1, 4.0.3

Native libraries seen: libobjectbox-jni.so.

The Gradle change

implementation("io.objectbox:objectbox-android:4.1.0")

an aligned version, lowest measured above the last offending one; newer measured versions are aligned too (latest 5.4.2, which ships no 64-bit .so: natives removed or moved, measure the separate artifact). Check: ./gradlew :app:dependencyInsight --dependency objectbox-android --configuration releaseRuntimeClasspath // NATIVES MOVED (latest has no 64-bit .so). Successor artifacts measured 2026-10-01 (data/successors-2026-10-01.json): objectbox-android-db:5.4.2 aligned. Only these versions were measured; any other successor version is UNVERIFIED

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

./gradlew :app:dependencyInsight --dependency objectbox-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/io/objectbox/objectbox-android/4.1.0/objectbox-android-4.1.0.aar
python3 check16k.py objectbox-android-4.1.0.aar

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

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Related artifacts

ObjectBox browser (io.objectbox:objectbox-android-objectbrowser)