You only need the recommended items. It looks like the problem is somewhere else. Are you using the latest version of AppCompat library (3.52)?
No, I checked and it shows v2.0. It seems that on my laptop I used an old lib folder from my backup drive. I fixed it now but I have another error:
"
Compiling generated Java code. Error
src\com\myapp\details.java:17: error: cannot find symbol
public class details extends android.support.v7.AppCompatActivity implements B4AActivity{
^
symbol: class AppCompatActivity
location: package android.support.v7
Note: src\com\myapp\starter.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output
1 error
javac 9.0.1
"