The Android NDK allows building performance-critical parts of apps in native code like C/C++. It provides headers and libraries for activities, input handling, sensors, resources, and more. It includes tools to build, compile code for device architectures, and package libraries into APKs for distribution.

4. Tools to build and compile your native code for the device architecture (such as ARM) What’s in Android NDK A way to package to package your library into the APK file so you can distribute your application easily A set of native system headers that will be supported for future releases of Android platform(libc, libm, libz, liblog, JNI headers, some C++ headers, OpenGL) Documentation, sample code and examples

5. Using NDK

6. Installing C/C++ support on Eclipse

8. Installing Cygwin

14. Install Android NDK