Enable 16KB memory page size on Android #64640

chrispader · 2025-06-20T11:21:55Z

MOBILE-EXPENSIFY: https://github.com/Expensify/Mobile-Expensify/pull/13604

Explanation of Change

There was a blog post by the Android team recently which announces that Android apps will need to support 16KB memory page sizes by November 1st, 2025. Enabling 16KB memory page sizes brings significant performance improvements, e.g. faster app launches, battery usage, camera starts, ...

This PR enables 16KB memory page size, to unlock performance gains and to be prepared early for the deadline of November 1st, 2025.

Separate PRs for library updates:

✅ react-native-vision-camera

Expensify internal libraries:

Upstream Issues/PRs:

⏳@react-native-firebase/crashlytics

Fixed Issues

$ #63871
PROPOSAL:

Tests

Verify that no errors appear in the JS console

Offline tests

QA Steps

// TODO: These must be filled out, or the issue title must include "[No QA]."

Verify that no errors appear in the JS console

PR Author Checklist

Screenshots/Videos

Android: Native

Android: mWeb Chrome

iOS: Native

iOS: mWeb Safari

MacOS: Chrome / Safari

MacOS: Desktop

Adds the ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES argument to the CMake configuration in the Gradle build file to support flexible page sizes in native builds.

melvin-bot · 2025-06-20T11:22:24Z

@MariaHCD Please copy/paste the Reviewer Checklist from here into a new comment on this PR and complete it. If you have the K2 extension, you can simply click: [this button]

MariaHCD

Makes sense - tagging @roryabraham for additional 👀

roryabraham

@chrispader please fill out test and QA steps on this PR and complete the author checklist

…android

chrispader · 2025-06-24T10:50:13Z

@chrispader please fill out test and QA steps on this PR and complete the author checklist

Just checking if the HybridApp build also works fine! Will finish the PR Author Checklist after that

chrispader · 2025-06-24T13:34:07Z

@roryabraham to enable 16KB mode, we'll have to update or add minor patches for all the libraries that are not 16kb enabled.

The patch includes just one change useLegacyPackaging true in the build.gradle of the library. At the moment i count around ~24 libraries that need to be patched or updated. Do you think we want to go with adding all these patches?

github-actions · 2025-06-24T13:35:19Z

⚠️ This PR is possibly changing native code and/or updating libraries, it may cause problems with HybridApp. Please check if any patch updates are required in the HybridApp repo and run an AdHoc build to verify that HybridApp will not break. Ask Contributor Plus for help if you are not sure how to handle this. ⚠️

roryabraham · 2025-06-25T16:11:44Z

@chrispader adding patches is fine, so long as we:

follow the new patches structure and add a details.md for each added patch
Create upstream PRs for all patched dependencies

…packaging-for-16kb-memory-page-size.patch

…aging-for-16kb-memory-page-size.patch

…ry-page-size.patch

package.json

roryabraham · 2025-07-12T01:01:33Z

package.json

    "react-native-url-polyfill": "^2.0.0",
    "react-native-view-shot": "4.0.0",
-    "react-native-vision-camera": "^4.6.1",
+    "react-native-vision-camera": "^4.7.0",


Same with vision-camera?

PR up here: #66640

…android

chrispader · 2025-07-17T15:18:05Z

Ok so i've patched more libraries and updated Android native Gradle libraries to versions that are compatible with Android 16KB memory page size. After building the HybridApp, i ran the script for checking library alignment and this is the current output.

./scripts/check-android-16kb-memory-page-size-compatibility.sh Mobile-Expensify/Android/build/outputs/apk/debug/Expensify-debug.apk`

Recursively analyzing Mobile-Expensify/Android/build/outputs/apk/debug/Expensify-debug.apk

NOTICE: Zip alignment check requires build-tools version 35.0.0-rc3 or higher.
  You can install the latest build-tools by running the below command
  and updating your $PATH:

    sdkmanager "build-tools;35.0.0-rc3"

=== ELF alignment ===
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libpartition_alloc.cr.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreact_codegen_safeareacontext.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libpdfium.cr.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libgifimage.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libjsi.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libExpensifyNitroUtils.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreact_codegen_rnscreens.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libnative-filters.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libchrome_zlib.cr.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libVisionCamera.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libpdfiumandroid.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libfbjni.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libmapbox-common.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libworklets.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/librnscreens.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libcrashlytics-common.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libhermestooling.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreact_codegen_rnpicker.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libmapbox-maps.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libnative-imagetranscoder.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libjsc.so: \e[32mALIGNED\e[0m (2**16)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libpl_droidsonroids_gif.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreact_codegen_RNLiveMarkdownSpec.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/liblivemarkdown.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libimagepipeline.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libappmodules.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libicuuc.cr.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libcrashlytics.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libgesturehandler.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libexpo-av.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libjsc-android.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libNitroModules.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libNativeBridge.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libhermes.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libc++_shared.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libtensorflowlite_jni.so: \e[32mALIGNED\e[0m (2**16)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libcrashlytics-handler.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libRNNitroSQLite.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libanimation-decoder-gif.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreanimated.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libfs-native.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libexpo-modules-core.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreactnative.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libreact_codegen_rnsvg.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libjsctooling.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libabsl.cr.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libavif_android.so: \e[31mUNALIGNED\e[0m (2**12)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libimage_processing_util_jni.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libdatastore_shared_counter.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/librealm-jni.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libcrashlytics-trampoline.so: \e[32mALIGNED\e[0m (2**14)
/var/folders/b1/xj_1nb1j5w9gx10ntjfr6jc40000gn/T/Expensify-debug_out_XXXXX.42xhEgxPqh/lib/arm64-v8a/libc++_chrome.cr.so: \e[31mUNALIGNED\e[0m (2**12)
\e[31mFound 14 unaligned libs (only arm64-v8a/x86_64 libs need to be aligned)

All the lines that show UNALIGNED are for some android library file (.so) that still needs to be aligned.

chrispader · 2025-07-17T15:29:50Z

Next steps are:

Identify which NPM packages or native Android packages the libraries belong to. For this, either some web research can be done or calling ./gradlew dependencies in MobileExpensify/Android can help.
If possible, update the package to a higher version that is compatible with 16KB memory page sizes. If not, patch the NPM package with the following addition:
In the `build.gradle' of the Android package add the following:

android {
  defaultConfig {
    externalNativeBuild {
      cmake {
        arguments "-DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON"
      }
    }
  }
}

Build Android (for HybridApp) for a 16KB enabled device (e.g. Pixel 9 emulator with 16KB enabled API35 or API36 android image)
If the build succeeds, re-run the script and check whether there are still unaligned libraries.

…android

roryabraham · 2025-09-12T19:12:16Z

Closing this as a dupe of #69161

Enable flexible page sizes in CMake build

8e375d1

Adds the ANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES argument to the CMake configuration in the Gradle build file to support flexible page sizes in native builds.

chrispader requested a review from a team as a code owner June 20, 2025 11:21

melvin-bot bot requested review from MariaHCD and removed request for a team June 20, 2025 11:22

MariaHCD previously approved these changes Jun 23, 2025

View reviewed changes

MariaHCD requested a review from roryabraham June 23, 2025 16:57

roryabraham requested changes Jun 24, 2025

View reviewed changes

chrispader added 2 commits June 24, 2025 12:17

Merge branch 'main' into @chrispader/enable-16kb-memory-page-size-on-…

ea049e5

…android

chore: update HybridApp build.gradle

02a8c55

chrispader dismissed MariaHCD’s stale review via 02a8c55 June 24, 2025 10:45

chrispader added 4 commits June 24, 2025 12:51

Update cspell.json

dbd619a

chore: enable legacy packaging

4d15b45

chore: add 16kb mode to other libraries

07ed7b4

chore: update nitro

37382ec

chrispader added 6 commits June 28, 2025 15:18

chore: react-native-safe-area-context patch

3eb2074

chore: update react-native-vision-camera

341db21

chore: @rnmapbox/maps

588b069

chore: add details.md for react-native-safe-area-context patch

64eac65

chore: @react-native-firebase/crashlytics

26a26d4

fix: update PR link in details.md

400a145

chrispader mentioned this pull request Jun 28, 2025

Android: Enable 16KB memory page size support Expensify/react-native-live-markdown#705

Merged

chrispader added 4 commits June 28, 2025 17:28

chore: @expensify/react-native-live-markdown

8f749ba

Update @Expensify+react-native-live-markdown+0.1.288+001+android-jni-…

84fc3ee

…packaging-for-16kb-memory-page-size.patch

chore: expo-av and expo-modules-core

031f201

chore: react-native-fs

c41c929

chrispader added 4 commits June 28, 2025 17:51

fix: expo-av patch

2b3bc77

Update @react-native-firebase+crashlytics+12.9.3+002+android-jni-pack…

6cd8118

…aging-for-16kb-memory-page-size.patch

Update @rnmapbox+maps+10.1.33+002+android-jni-packaging-for-16kb-memo…

1d2c632

…ry-page-size.patch

chore: rename patches

fe94021

chrispader marked this pull request as draft June 28, 2025 16:17

chrispader added 2 commits June 28, 2025 18:22

chore: react-native-pdf

80a4f9a

chore: update nitro-sqlite

09c7f74

roryabraham reviewed Jul 12, 2025

View reviewed changes

chrispader added 13 commits July 17, 2025 14:17

chore: rename and update initial onfido patch

0dd8908

chore: patch onfido for android 16kb memory alignment

e0954e8

Merge branch 'main' into @chrispader/enable-16kb-memory-page-size-on-…

115c76c

…android

chore: move back onfido patch

10dbc46

chore: update live-markdown and remove patch

dacbddf

chore: ignore another file in cspell

0d227c9

Update @onfido+react-native-sdk+10.6.0.patch

bb68e27

chore: remove useLegacyPackaging

db24d5d

chore: update @rnmapbox/map

2fa9a25

chore: updat react-native-pdf

bbcc730

chore: update firebase crashlytics patch

c51f312

Delete @rnmapbox+maps+10.1.39+001+initial.patch

f4ca86e

chore: new @rnmapbox/maps patch

ed986c6

Create check-android-16kb-memory-page-size-compatibility.sh

ab70afb

chrispader added 2 commits July 17, 2025 22:32

Merge branch 'main' into @chrispader/enable-16kb-memory-page-size-on-…

fabb9e9

…android

chore: extract vision camrea bump

f801c92

roryabraham mentioned this pull request Aug 19, 2025

[HOLD https://github.com/callstackincubator/android/issues/15] [$250] Enable 16KB memory page size on Android #63871

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roryabraham closed this Sep 12, 2025

Enable 16KB memory page size on Android #64640

Enable 16KB memory page size on Android #64640

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