Build Successful,But some code tell me error msg:"Unresolved reference" .Help me please~

I can build shadowsocks-android successful,But there is so many err msg will be show on the androidStudio,And i can’t click the object to jump to the target. Please tell me ,How to fix it?

There is other pic.

This is bug of Android Studio. Update some dependencies or report to Android Studio team.

Ok,Thank you very much ~