pedantic push back on comment that "No C++ code" is a key android-activity differentiator

[rib]

:) hey, I know it's pedantic and I shouldn't care, but I notice that the README for this project highlights that being "No C++ code" is a USP for this project compared to android-activity which feels a tad misleading to me.

Since I did the work to port all the C glue code for NativeActivity to 100% Rust a long time ago it seems misleading to imply android-activity isn't written in Rust.

If someone uses the native-activity backend then that's 100% Rust to the fullest extent possible. With the NativeActivity backend you don't even need to write a line of Java or Kotlin code either. It's probably the only way in which someone can run a 100% Rust Android application since NativeActivity is shipped as part of the android SDK.

The C++ code that I guess this comment is referring to is a vendored copy of GameActivity; which is an upstream Google project that's only built with the "game-activity" feature.

So although android-activity supports running with the GameActivity library, it's like using any Android NDK API that's also a bunch of Android C++ code written by Google.

This project also depends on the ndk crate that will also directly call native utility code written by Google in C++ so it doesn't seem like either project can pretend that they don't depend on native abstractions that may not be written in Rust.