How to install NDK with Android SDK Manager

1. Close Android SDK Manager
2. Start a Command Prompt as Administrator
3. cd"path to your installation of Android SDK Manager"\tools\bin
4. sdkmanager ndk-bundle
5. Accept the License Agreement
6. Wait a long time. The installation is done without any progress indicator.
7. When it finally reports done, start Android SDK Manager
8. Look under Extras and there you'll find Ndk Bundle

https://stackoverflow.com/questions/41471000/how-to-install-ndk-with-android-sdk-manager