Error: Unfortunately you can't have non-Gradle Java modules and > Android-Gradle modules in one project

Question

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

Answer 1

The ultimate solution to this error:

SOLUTION 1

Step 1 Go to File -> Invalidate Caches/Restart.

Step 2 Close the project.

Step 3 Go to project folder and delete .idea folder.

Step 4 Delete YourProjectName.iml in project folder.

step 5 You will see a folder below graddle folder, Delete YourProjectName folder (it contains another YourProjectName.iml file).

Step 6 Open Android studio -> open existing project, and then select your project.

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SOLUTION 2

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Step 1: Open the Corrupted Project (The one showing error).

Step 2: Open system.gradle file.

step 3: add this line of code include ':app'.

Step 4: click on the sync, to sync the gradle file.