Android studio Error “Unsupporte

Unsupported Modules Detected: Compilation is not supported for following modules: . Unfortunately you can't have non-Gradle Java modules and Android-Gradle modules in one project.

• 1 close the project

• 2 close Android Studio IDE

• 3 delete the .idea directory

• 4 delete all .iml files

• 5 open Android Studio IDE and import the project

https://stackoverflow.com/questions/28668252/android-studio-error-unsupported-modules-detected-compilation-is-not-supported