Build type specific folder not recognized for a product flavor

Question

I have configured my project to have multiple product flavors. I have the following code in my module build.gradle:

android {
    // Rest of the configuration omitted for clarity
    buildTypes {
        debug {
            // ...
        }

        release {
            // ...
        }
    }

    productFlavors {
        paid
        free
    }
}

If I create a file (any file: Java, resources, ...), in the paid, free, debug or release, it is recognized by Android Studio and I can use it in my project.

However, if the same file is created in paidDebug (or a similar folder) it is not recognized in Android Studio. Do I need any extra configuration for this to work? Is this not supported (yet)?

Proceed

Where did you place the paidDebug folder? – Nubbin

It is in app/src/paidDebug/{java,res}. If I replace paidDebug with paid it works as expected. – Lorrettalorri

Do you have a corresponding source/resource file in the main tree? – Nubbin

No, the files are only for this specific variant. But Android Studio should recognize them anyway, no? – Lorrettalorri

Please, see my updated answer. – Nubbin

Answer 1

1. Source code files with the same name should be placed in all of the alternative source sets (but not in the 'main').

   Either:

   app/src/free/java/com/domain/myapp/MainActivity.java
   app/src/paid/java/com/domain/myapp/MainActivity.java
   

   Or:

   app/src/freeDebug/java/com/domain/myapp/MainActivity.java
   app/src/freeRelease/java/com/domain/myapp/MainActivity.java
   app/src/paidDebug/java/com/domain/myapp/MainActivity.java
   app/src/paidRelease/java/com/domain/myapp/MainActivity.java
   
   

2. Resource files with the same name can be placed in any source set, including 'main'.

   app/src/main/res/layout/activity_main.xml
   app/src/paidDebug/res/layout/activity_main.xml
   app/src/paidRelease/res/layout/activity_main.xml
   

   In this case, when building the 'free' flavor, the layout file from 'main' set will be used. But, during the build of the 'paid' flavor, the specific version of the layout will be used.

Nubbin

This is what I was looking for! I added alternate source code files in flavor directories, but did not remove it from 'main' so changes were not reflecting. This helped me. Thanks! – Revue

Answer 2

You can specify specific source directories in your build.gradle file. For example, to add testFreeRelease to unit test sources and testFree to android integration test sources:

android {
    [...]
    sourceSets {
        main.java.srcDirs += 'src/main/java'
        testFreeRelease.java.srcDirs += 'src/testFreeRelease/java'
        androidTestFree.java.srcDirs += 'src/androidTestFree/java'
    }
}

This also works for Kotlin. Just switch java with kotlin.

Tetravalent

Thanks for the answer! Had trouble with renaming directories to kotlin for various build variants. – Ticket