Prepare android sdk to support 16 KB page size

[dimskom]

Prepare android sdk to support 16 KB page size compatibility requirement when targeting Android 15+
https://developer.android.com/guide/practices/page-sizes

Added this flag DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON and updated the ndk version for the build
New NDK version is required for supporting the flag
#1348

[Copilot]

Pull Request Overview

This PR updates the Android SDK configuration to use a newer NDK version (29.0.13599879), bump the target SDK to API 31, and introduce support for flexible page sizes when targeting Android 15+.

• Bumped default NDK from 21.4 to 29.0 and targetSdkVersion from 29 to 31
• Added -DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON CMake flag
• Updated scripts, docs, and workflows to reference the new NDK version and manifest exported attribute

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
lib/android_build/tools.gradle	Bumped ndkVersion and targetSdkVersion defaults
lib/android_build/maesdk/build.gradle	Added -DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES=ON to CMake args
lib/android_build/ide.cmd	Updated default %ANDROID_NDK_VERSION%
lib/android_build/app/src/main/AndroidManifest.xml	Added android:exported="true" to MainActivity for API 31+
docs/cpp-start-android.md	Updated documented default NDK version
build-android.cmd	Updated default %ANDROID_NDK_VERSION%
.github/workflows/codeql-analysis.yml	Updated sdkmanager NDK version
.github/workflows/build-android.yml	Updated sdkmanager NDK version

Comments suppressed due to low confidence (1)

docs/cpp-start-android.md:25

• [nitpick] Update the documentation to include a note about the new DANDROID_SUPPORT_FLEXIBLE_PAGE_SIZES flag, explaining its purpose and how to enable it when targeting Android 15+.

set "ANDROID_NDK_VERSION=29.0.13599879"

[lalitb]

@dimskom @anod Not an expert here, but I see new warnings with the NDK version in the CI build logs:

C/C++: Ignoring invalid ABI 'riscv64' found in ABI metadata file 'C:\Android\android-sdk\ndk\29.0.13599879\meta\abis.json'.
WARNING:C/C++: Ignoring invalid ABI 'riscv64' found in ABI metadata file 'C:\Android\android-sdk\ndk\29.0.13599879\meta\abis.json'.

Is this expected, or something else needs to be changed?

[dimskom]

@dimskom @anod Not an expert here, but I see new warnings with the NDK version in the CI build logs:

C/C++: Ignoring invalid ABI 'riscv64' found in ABI metadata file 'C:\Android\android-sdk\ndk\29.0.13599879\meta\abis.json'.
WARNING:C/C++: Ignoring invalid ABI 'riscv64' found in ABI metadata file 'C:\Android\android-sdk\ndk\29.0.13599879\meta\abis.json'.

Is this expected, or something else needs to be changed?
The SDK is not supporting riscv64 architecture, but preliminary support for riscv64 was added in the NDK, that's why the warning is

[dimskom]

@lalitb The builds are failing because of deprecated windows 2019 image, what do you suggest?

[ThomsonTan]

@lalitb The builds are failing because of deprecated windows 2019 image, what do you suggest?

Since the change is not targeting Windows, I think the Windows CI failure can be ignored for now.