Unreal and Android VR

Hi

I was following along with the tutorial for building a VR project for Android. I was stopped by this:

If you have other versions of the Android SDK installed (or, older versions of CodeWorks for Android), we recommend that you uninstall them and install CodeWorks for Android, using the CodeWorks for Android installer that’s being distributed with UE

I spent a while configuring the Android SDK and getting the right USB drivers, etc. Now I have to uninstall it and install codeworks? I also read where you didn’t need to install the JAVA JDK because it comes with the later version of Android studio which is not entirely true.