Compile-time created class is shown as non-existent in IntelliJ

Question

Motivation:

I'd like to try if compile-time annotation processing fits my problem. It needs to work out of the box, no compiler arguments etc.

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Current state:

I have:

• The annotation
• An annotation processor
• A .jar containing both of these and a javax.annotation.processing.Processor file containing the FQCN of my processor in META-INF/services

What should happen:

• It should autodetect the processor
• It should process the annotation and create a new class (WiredAnnotated)
• I should be able to use this class in one step of compilation (not multiple phases)
• I wan't the editor to accept this class is generated (e.g. AndroidAnnotations manages this as well)

What actually happens:

• It autodetects the processor
• It creates a new class (in out/production/*/generated/)
• I am able to use this class
  • The source code looks right
  • When decompiling it looks ok too
• The editor cannot resolve the class (see screenshot)

What I tried:

• Restarting IntelliJ
• Invalidating caches
• Checking for output of the annotation processor

Screenshot:

When compiling, it actually works as expected. I guess it has something to do with inspecting the wrong directories.

Does anyone have an idea/clue on what I'm doing wrong? Did I miss information which could help you help me?

Thanks in advance, Till

Answer 1

Well, you need to add you out/production/*/generated/ to projects source folder. So, IntelliJ will know about your generated classes.

You can make it via Right click on directory > Mark directory as source root.

or

Project structure (F4) > Modules > Sources tab > Source folders should contain all directories with your source codes, generated one inludes.

In android there is a gen dir in root folder, but notice, it glows blue or green which means it marked as Source folder, it is also visible in Project structure > Modules. It contains R, BuildConfig and Manifest.