Android javax.annotation.processing package missing. Can't use AbstractProcessor

Question

For some reason javax.annotation.processing package is missing. I found this stackoverflow post about the same issue, but it gives broken link as answer. Have tried some stuff that google suggest, but with no results.

Answer 1

I assume that you want to write annotation processor in Android Studio and have a very common project structure in this case: Android app, Java lib with @interface definitions and Java lib with AbstractProcessor subclasses.

I ran into the same problem and one thing helped:

• Completely remove your Java module from project layout.
• Make sure that only your code survives, delete all (or maybe just .iml file would suffice?) other stuff in module directory.
• Add your sources again as module Java Library. Everything should work now.

I think that was because first I added module as Android library, then manually changed it to look like Java library (default structure for gradle java plugin). But .iml was from Android lib module structure anyway.

Answer 2

The solution is given by vganin above. My problem was that I created an Android Library Project (mistakenly) and not Java Library Project.

Answer 3

In my case I was using the android library plugin and the base plugin together:

plugins {
    id 'com.android.library'
    id 'base'
}

This works:

plugins {
    id 'com.android.library'
}