# Getting started with the Android NDK for see-through

This guide shows you how to set up Google VR development with the Android NDK
and build the **HelloVRBeta** sample app. This app is designed to help you learn
about working with the see-through mode technology as well as the experimental
6DoF controllers and faceplate.

1. Download and install the latest version of `gvr-android-sdk\*.zip` from the [releases page](https://github.com/googlevr/gvr-android-sdk/releases).
2. Follow these steps to build and run the [HelloVRBeta sample app](https://github.com/googlevr/gvr-android-sdk/tree/master/samples/ndk-hellovrbeta).
   The requirements and steps to build the sample app using the NDK are nearly the same
   as [building the HelloVR sample app](https://developers.google.com/vr/android/get-started) for the SDK, with the following key changes:

   1. Download the latest version of the [Android NDK.](https://developer.android.com/ndk/downloads/index.html)
   2. Extract the NDK `.so` files by running:

            ./gradlew :extractNdk

   3. In `settings.gradle`, uncomment the following line:

            include ':samples:ndk-hellovrbeta'

   4. To build and run the sample app in Android Studio, select **samples-ndk-hellovrbeta** as your target.