I\'m trying to use java 8 in my project and for that I added the jack compiler.
After enabling jack I started having problems with libraries that use Annotation Proc
You can enable Annotation Processors without closing your project in Android Studio 2.3:
File -> Other Settings -> Default Settings
Build, Execution, Deployment -> Compiler -> Annotation Processors ->
Enable annotation processing.
Don't forget to clean, build, invalidate and restart after that.
Cheers!