I have an IntelliJ 14.1.2 Project consisting of two modules - one is an Android Gradle based module and the other is a Spring Java-based module with Maven.
gps-track
1- close the project
2- close Android Studio IDE
Android Studio
3- delete the .idea directory
.idea
4- delete all .iml files
.iml
5- open Android Studio IDE and import the project
Answer from here