android-jni

You can safely transfer strings and arrays between Kotlin and C++ by applying correct JNI type mapping and managing local reference lifetimes, preventing memory leaks and crashes during native data exchange.

Android NDK background thread crashes when calling a Java listener happen because the native thread is not attached to the JavaVM. You must attach the thread, cache class and method IDs, and handle global references safely.

The correct way to name native methods for JNI bridges in Android involves using proper JNI entry point naming conventions and initializing them within JNI_OnLoad to ensure the Java or Kotlin runtime correctly links to your C or C++ functions.

To handle exceptions and global references in Android NDK and avoid memory leaks, you must propagate exceptions across the JNI boundary and carefully manage the lifetime of both local and global references throughout your native method execution.

Yes, this JNI guidance applies to AAOS projects as well as standard Android apps. It supports stable and efficient native bridges for streaming audio or processing hardware data in both standard Android and Android Automotive environments.

The best way to implement JNI_OnLoad initialization for Android native bridges is to cache required class and method IDs early, ensuring safe and efficient callbacks from C++ to Java listeners while maintaining correct JavaVM thread attachment.