Unifies JNI usage across native targets, offering rich type-conversion helpers, annotation-driven generation of C-style JNI stubs, and seamless Java-to-native calls that remove boilerplate.
Kotlin-JNI is a powerful Kotlin Multiplatform library designed to simplify and unify JNI (Java Native Interface) development across Android, Desktop (Linux, macOS, Windows), and Kotlin/Native.
It provides a common JNI interface for all supported native targets and includes a KSP module to automatically generate JNI-compatible function stubs, eliminating boilerplate and bridging the gap between your native Kotlin code and the Java world.
I want to express great gratitude to the original creator @DatL4g for the idea and execution. This project indeed makes JNI on Kotlin painless and effortless.
However, since the original repository no longer has a permissive license, this repository had to be created, based on the older, Apache-licensed version.
Use expect/actual definitions to seamlessly integrate JVM and Native code.
Works across androidNative, linux, macos, and mingwX64 targets.
A rich set of extension functions to effortlessly convert between JNI types and standard Kotlin types (e.g., jstring.toKString(), IntArray.toJIntArray()).
Automatic wiring of Kotlin source sets, bundling Kotlin/Native artifacts and loading those at runtime.
You can use standard Kotlin types for making calls between JVM and Native.
@JniCall@JniCallbackSuspend functions are supported too!
Pass Kotlin primitives, Strings, ByteArrays, as well as ByteBuffers and custom types using serializers.
Please read the full documentation.
Feel free to create Pull Requests and Issues. I will do my best to address them.
Kotlin-JNI is a powerful Kotlin Multiplatform library designed to simplify and unify JNI (Java Native Interface) development across Android, Desktop (Linux, macOS, Windows), and Kotlin/Native.
It provides a common JNI interface for all supported native targets and includes a KSP module to automatically generate JNI-compatible function stubs, eliminating boilerplate and bridging the gap between your native Kotlin code and the Java world.
I want to express great gratitude to the original creator @DatL4g for the idea and execution. This project indeed makes JNI on Kotlin painless and effortless.
However, since the original repository no longer has a permissive license, this repository had to be created, based on the older, Apache-licensed version.
Use expect/actual definitions to seamlessly integrate JVM and Native code.
Works across androidNative, linux, macos, and mingwX64 targets.
A rich set of extension functions to effortlessly convert between JNI types and standard Kotlin types (e.g., jstring.toKString(), IntArray.toJIntArray()).
Automatic wiring of Kotlin source sets, bundling Kotlin/Native artifacts and loading those at runtime.
You can use standard Kotlin types for making calls between JVM and Native.
@JniCall@JniCallbackSuspend functions are supported too!
Pass Kotlin primitives, Strings, ByteArrays, as well as ByteBuffers and custom types using serializers.
Please read the full documentation.
Feel free to create Pull Requests and Issues. I will do my best to address them.