• build (and build directory if there are multiple modules in a project)
• .idea
• *.iml
• local.properties
• .DS_Store
• .gradle
• .cxx

Get the list of installed packages to determine what to pull:

> adb shell pm list packages | grep tom
package:com.customermobile.preload.vzw
package:com.fanqies.tomatofn

With the package name, we can get the actual file name and location of the APK using:

> adb shell pm path com.fanqies.tomatofn
package:/data/app/com.fanqies.tomatofn-g0zd0oekwgIETU7mS62UEQ==/base.apk

Then pull it:

adb pull /data/app/com.fanqies.tomatofn-g0zd0oekwgIETU7mS62UEQ==/base.apk

This will result in an APK file “base.apk” downloaded onto your computer. Rename it appropriately:

mv base.apk tomato.apk

Follow directions at https://malacupa.com/2018/11/11/debug-decompiled-smali-code-in-android-studio-3.2.html