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

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.