Android JNI: Complete Guide

In Android, JNI calls are implemented using the Java Native Interface (JNI). JNI allows Java code to call native C or C++ code, enabling interaction between Java and native code. In JNI, native methods need to be declared using the native keyword and native library files need to be loaded using the System.loadLibrary() method. The corresponding native methods are then implemented in the native library files. Finally, the native methods are called in Java code through JNI. JNI calls can optimize performance and extend functionality.