Android NDK: From Elementary to Export Episode 6

Here is a demo in Pro Android C++ with the NDK.
It introduced an app which could iterate the thread by native thread or POSIX thread.

First of all, you need to be noticed that there are two kinds of build system in Android Studio: CMakList.txt and Android.mk.

CMakeList.txt:
https://developer.android.com/studio/projects/add-native-code.html
Android.mk:
https://developer.android.com/ndk/guides/android_mk.html

Secondly, we need to add ndk-build block in build.gradle file

Then we use following command to generate header file for JNI.

javah -d jni -classpath java com.luxuan.threads.MainActivity

and finally, click the button, we can the see app running smoothly.