A super simple example of using JNI in an Android app.
This example code is part of the tutorial on how to add C/C++ code to an android application either having the source code or the already compiled files.
The tutorial can be found here -> https://erev0s.com/blog/add-jnicc-your-existing-android-app/
In the master branch you will find the example on how to include already compiled (.so files) libraries in your app.
In the JNI_with_Source branch located here, you will find the code on how to include C/C++ source code in your app.