Seigo Nonaka

Yes, fonts.xml is dying. We are now proposing new API for Java and NDK, named SystemFonts. https://developer.android.com/reference/android/graphics/fonts/SystemFonts The equivalent APIs will be in NDK too but there is no public...

It is not clear to me how you implement the script-based filter, but please note that the returning locale does not completely reflect the font's cmap coverage. For example, NotoSansCJK...

Sorry, even ndk-r19, the relevant information is not included. I'll notify you once the NDK API documents are public.