Build Android binaries with 16k alignment

[isaacbrodsky]

• https://developer.android.com/guide/practices/page-sizes#compile-16-kb-alignment

We may need to rebuild or adjust our build settings to be compatible. Current page size is 4k. If nothing else, we should make a Hello World H3-on-Android app that we can use as a reference or for testing.

[tyvsmith]

The recommendation from Google is that page size should always be determined dynamically for the system it's running it. There are devices from 4 - 64 (even though 16 is the new default), but outside of Android, other systems have diverged too.

[eapereskokov]

@isaacbrodsky any updates about adjusting library to 16 KB page size in android? It blocks applications which are using H3 library from upgrade to target sdk 35.

[eeVoskos]

Any plans on addressing this issue? It's blocking for Android apps that need to use H3 natively. Thanks.

[isaacbrodsky]

https://github.com/dockcross/dockcross/pull/895 will enable this for new builds in the cleanest way. Alternately we will need to set the linker options here https://developer.android.com/guide/practices/page-sizes#compile-r26-lower I have a draft of this support at https://github.com/isaacbrodsky/h3-java/pull/3

Unfortunately, releasing a new version of com.uber:h3 is blocked on #174.

[yeonho84lee]

Starting from Android 15, 16KB alignment is supported, and it is reported to have a significant performance impact. Android Studio also shows a warning for libraries that are not built with 16KB alignment. Would it be possible to obtain an officially built artifact of the h3-java library with 16KB alignment?

https://developer.android.com/guide/practices/page-sizes

[systemed]

Thanks for this! Would you be able to update https://github.com/isaacbrodsky/h3-android-sample to include the latest .jar?

[isaacbrodsky]

Certainly, please see isaacbrodsky/h3-android-sample#5