I'm not really familiar with JNI and not sure if it's different on Android vs server-side Java, but this forum thread might be interesting reading for you: http

I'm not really familiar with JNI and not sure if it's different on Android vs server-side Java, but this forum thread might be interesting reading for you: https://users.rust-lang.org/t/rust-jni-android-async-callback/41016 https://users.rust-lang.org/t/rust-jni-android-async-callbac... EDIT: also maybe take a look at this? https://github.com/rousan/AndroidWithRust https://github.com/rousan/AndroidWithRust "tokio jni" is the search term that turned these up for me