android-jni-go (ajni)

This library contains types and functions for interoperation Go and JVM on Android.

Most of the code is ported from xlab/android-go, which seems not being maintained for a quite a while. This library extracts a small portion from android-go's auto-generated code, and fixes several critical issues.

Differences from xlab/android-go

This library contains only JNI interfaces. Instead, xlab/android-go is a self-contained project to create Android app using Go.

This library uses uintptr as underlying representation of JNI reference types, while xlab/android-go uses unsafe.Pointer. The latter could be bugged when, for example, a JNI function returns a local ref. The address value of local ref is usually small (<= 0xFF) and could fail Go's pointer checking when goruntime moves the stack.

It's also worth noted that xlab/android-go uses *JbyteArray to represent a JVM reference type, while in this library we use simply JbyteArray. Apart from the difference, this library can be used as a drop-in replacement for xlab/android-go.