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)?

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.