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

Writing in 2020 -

If none of these worked, close android studio and then go to

C:\Users\User.AndroidStudio(ANDROID_STUDIO_VERSION)\system and delete the caches folder

Restart your project now, it should work.

Answer 2

If nothing works try Import app folder not the Git root while opening Android Project and Error will be gone

Answer 3

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.)

Answer 4

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.

Answer 5

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

The best way is

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

Answer 6

The following solution I found in this forum worked like a charm:

1- close the project

2- close Android Studio IDE

3- delete the .idea directory in the directory where your app resides

4- delete all .iml files in the directory where your app resides

5- open Android Studio IDE and import the project