android studio ksoap2,java - Adding KSOAP2 in non-gradle Android Studio project - Stack Overflow

I have an existing project that was built without gradle for Android Studio and I'm trying to get KSOAP2 to import.

I've tried adding the ksoap2-android.3.6.2.jar file to /lib/ and then right clicking and picking add to library but then a pop up menu comes up telling me it doesn't recognize the file type and to decide if it's a class, jar director, etc. I tried picking jar directory and then I added to my code

import org.ksoap2.SoapObject;

import org.ksoap2.serialization.PropertyInfo;

import org.ksoap2.serialization.SoapObject;

import org.ksoap2.serialization.SoapPrimitive;

import org.ksoap2.serialization.SoapSerializationEnvelope;

import org.ksoap2.transport.HttpTransportSE;

but studio complains that it can't find ksoap2.

How can I get this to work?