android studio java.lang.NoClassDefFoundError Gson

Question

I\'ve made pretty much a fresh project. I added in the gson library by google to my projects /libs directory and added it as a library. I also adde

Answer 1

Something went wrong in incremental build system. One of this should help:

1. Menu Build -> Rebuild project
2. Delete folder /build
3. Close Android Studio, delete /build folder
4. Right click on your project -> "Open module settings" -> Dependencies tab -> check if Export is checked for your library