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

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

Posted by: admin March 10, 2020 Leave a comment


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-trackman.v1 is my root project and I’ve not configured any outputs or facets for this project. The app is my android gradle module and I’ve configured Android and Android-Gradle Facet for this project and gps-trackman isn’t my Spring Maven Project. I want to be able to build everything all together. Is it possible?

I now get this error message in my IntelliJ Eventlog

Unsupported Modules Detected: Compilation is not supported
for following modules: gps-trackman, gps-trackman.v1, app.
Unfortunately you can’t have non-Gradle Java modules and
Android-Gradle modules in one project.

The project ‘gps-trackman.v1’ is not a Gradle-based

Is this error just due to a misconfiguration of my project or is it really not possible to have a maven module and a Gradle module in one project?

Do I have to configure any Facets for the root project? Alternatively, do I have to convert my maven to gradle?

How to&Answers:

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

Answer from here


  1. Go to File -> Invalidate Caches/Restart.
  2. Close the project.
  3. Go to project folder and delete .idea folder.
  4. Delete YourProjectName.iml in project folder.
  5. Delete app.iml in app folder.
  6. Open Android studio -> open existing project, and then select your
  7. The Load Settings error and Unsupported modules detected error will
    be gone.


  1. Close Android Studio(IDE)

  2. Delete .idea folder in your project directory

  3. Delete .iml files in your project directory

  4. Open Android Studio(IDE) and import the project

  5. Happy Coding…


First of all you should update to Android Studio Source: https://code.google.com/p/android/issues/detail?id=77983

Then you should go to File -> Invalidate Caches / Restart -> Invalidate Caches & Restart.

Then try to build the application again.

I found this answer here


Press Ctrl-Alt-S > Uncheck “Android Support” plugin

(I wish I could tell you exactly why this works, but I can’t. If you want to develop for Android, try using Android Studio, which is also made by Jetbrains.)


Make sure you have added your module to the settings.gradle file:

include ':app'
include ':your-module'


Had same issue with Android Studio 3.3 Canary 13.

I was able to solve it by following these steps:

  • Go to the module settings and remove your module from the list
  • Edit settings.gradle and remove your module from there also
  • Physically move the module directory out of the project (to your desktop for instance)
  • Then in the module settings again add a module and select as type ‘Import Gradle Project’ in which you select the module folder you have moved to your desktop (or anywhere else)

When you complete these steps the module will be copied into your project again, AS will start syncing Gradle again and that succeeds without errors 🙂 Check your GIT status and you will see as soon as you add your module directory to GIT again that nothing has changed to your working directory. So it’s purely an issue with AS that gets somehow out-of-sync…

Based my solution on this comment: https://issuetracker.google.com/issues/37008041#comment3


This solution worked for me Android Studio 3.3.2.

  1. Delete the .iml file from the project directory.
  2. In android studio File->invalidate caches/restart.
  3. Clean and Rebuild project if the auto build throws error.


Hello Developers here is the ultimate solution to this error:


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.




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.



None of above worked for me but tried something random and it worked.

  1. Copy the corrupted project directory.
  2. Paste it at somewhere else.
  3. Import it in Android Studio. (File-> New-> Import project)
  4. And uncorrupted project get restored.

PS: You must have original corrupted project. (Means, copy it without tampering project structure)


goto .idea folder open modules.xml file and see for yourself what module is there that you are not using in project currently.


In my case settings.gradle contained invalid configuration.

I changed:

include ':app'
rootProject.name='<somthing else>'


include ':app'

Error is gone. So maybe check your settings.gradle for potential errors.


For me, my project was very corrupted. I don’t know how I got into that state. What I observed was that several .gradle file and proguard file had a whole bundle of xml content. Fortunately, the physical file had the correct content in it, but android studio was displaying it as some xml file that looked like it belonged to some generated res xml data. Things like “Sync to file system” or “sync project to gradle file”, “invalidate cache and restart” or “gradlew clean” wouldn’t clear up the issue. I even replaced the bogus xml data being displayed in the gradle scripts with the original content, but that didn’t help either. I tried some of the advise given above, but they either didn’t work or seemed too complex for me to feel that me project would go back into a well formed state.

So I elected to create a new blank project. Using file explorer, I copied all of the modules in the corrupted project into the new project (a plain old copy and paste) I also replaced the “settings.gradle” and the root “build.gradle” files of the new file with the contents from the old file. Once that is done, you have to run “sync Project with gradle files and you’re good to good. If by chance your project root has some content that you physically added, you would have to copy that over too.

So that gets you back up and working. I don’t know for sure what caused my project to get corrupted, but I think it might have to do with the laptop going into sleep mode. My laptop was not allowing me wake up from sleep and the only way for me to wake up was to power off an power on again. I did have some projects opened a few times when that happened. So that’s my best guess as to how the project might have gotten corrupted.


Copy the project files from the original source and paste it somewhere and then import from the Android Studio.


Been dealing with this issue for a while every time I tried opening a project.

I always receive this error even though I knew I had not made any changes that should of caused this apart from exporting to zip.

To Fix:

  • Make a new project or open project that works
  • Go to file > open > “your project”
  • Make sure your dummy project stays open.
    The project you were getting errors should be opened in a new window.

This fixed it for me without doing any changes or deleting anything.


the error explain all things, the idea is confused between gradle and maven.

try to create new project with two gradle modules, you can build spring application with gradle as maven.

see this example from spring guides


For some reason, you can not delete the .idea folder

The best way is

  • Delete all files inside of .idea
  • Delete .idea


Tried all above. Didn’t work.

Here’s what worked. Go to the file called modules.xml

Delete all the modules there. Clean and rebuild.