Multi flavor app based on multi flavor library in Android Gradle

Solution 1:

Finally I found out how to do this, I will explain it here for others facing same problem:

The key part is to set publishNonDefault to true in library build.gradle, Then you must define dependencies as suggested by user guide.

The whole project would be like this:

Library build.gradle:

apply plugin: 'com.android.library'

android {        
    ....
    publishNonDefault true
    productFlavors {
        market1 {}
        market2 {}
    }
}

project build.gradle:

apply plugin: 'com.android.application'

android {
    ....
    productFlavors {
        market1 {}
        market2 {}
    }
}

dependencies {
    ....
    market1Compile project(path: ':lib', configuration: 'market1Release')
    market2Compile project(path: ':lib', configuration: 'market2Release')
}

Now you can select the app flavor and Build Variants panel and the library will be selected accordingly and all build and run will be done based on the selected flavor.

If you have multiple app module based on the library Android Studio will complain about Variant selection conflict, It's ok, just ignore it.

Solution 2:

There are one problem with Ali answer. We are losing one very important dimension in our build variants. If we want to have all options (in my example below 4 (2 x 2)) we just have to add custom configurations in main module build.gradle file to be able to use all multi-flavor multi-buildType in Build Variants. We also have to set publishNonDefault true in the library module build.gradle file.

Example solution:

Lib build.gradle

android {

    publishNonDefault true

    buildTypes {
        release {
        }
        debug {
        }
    }
    productFlavors {
        free {
        }
        paid {
        }
    }
}

App build.gradle

android {

    buildTypes {
        debug {
        }
        release {
        }
    }
    productFlavors {
        free {
        }
        paid {
        }
    }
}

configurations {
    freeDebugCompile
    paidDebugCompile
    freeReleaseCompile
    paidReleaseCompile
}

dependencies {

    freeDebugCompile project(path: ':lib', configuration: 'freeDebug')
    paidDebugCompile project(path: ':lib', configuration: 'paidDebug')
    freeReleaseCompile project(path: ':lib', configuration: 'freeRelease')
    paidReleaseCompile project(path: ':lib', configuration: 'paidRelease')

}