buildConfigField depending on flavor + buildType

Question

I'm trying to define a buildConfigVariable depending on the flavor + buildType. Ideally, this is what I want

productFlavors {
    strawberry {
        buildConfigField "String", "WS_API_KEY", name + variant.buildType.name
    }
    ... more flavors ..
}

name does contain "strawberry", but I don't know if it's possible to access the variant's buildType.

Placed outside the Android closure I do have access to the BuildType and variant, but then I can't invoke buildConfigField

android.applicationVariants.all { variant ->
    println "****************************"
    println "variant: ${variant.name}"
    println "flavor: ${variant.flavorName}"
    println "****************************"

    if (variant.buildType.name == 'release') {
        if (variant.flavorName == 'strawberry') {
            buildConfigField "String", "WS_API_KEY", '"strawberry_release"'
        } else {
            buildConfigField "String", "WS_API_KEY", '"chocolate_release"'
        }
    } else if(variant.buildType.name == 'debug') {
        if (variant.flavorName == 'strawberry') {
            buildConfigField "String", "WS_API_KEY", '"strawberry_debug"'
        } else {
            buildConfigField "String", "WS_API_KEY", '"chocolate_debug"'
        }
    }


****************************
variant: strawberryRelease
flavor: strawberry
****************************
org.gradle.api.internal.MissingMethodException: 
    Could not find method buildConfigField() 
    for arguments [String, WS_API_KEY, "strawberry_release"]

I can easily create a Java factory and return the appropriate API_KEY depending on some BuildConfig constants, but I'd rather keep the code configuration agnostic.

Solution

Edit2: The version after 0.14.2 will allow doing this:

applicationVariants.all { variant ->
    variant.buildConfigField "int", "VALUE", "1"
}

So you'd be able to do something like this (to match the original question):

applicationVariants.all { variant ->
    variant.buildConfigField "String", "WS_API_KEY", variant.productFlavors.get(0).name + '_' + variant.buildType.name
}

Edit: it's not currently possible. The API is missing for this. Bug: https://code.google.com/p/android/issues/detail?id=67416

Try this:

applicationVariants.all { variant ->
    variant.mergedFlavor.buildConfigField "String", "NAME", '"VALUE"'
}

Comments

[JJD]

In addition: How to add buildConfigField to individual productFlavors?

[abitcode]

This might be helpful. stackoverflow.com/a/50983681/3333878

[Maragues]

That throws an error MissingMethodException: No signature of method: com.android.builder.DefaultProductFlavor.buildConfigField() is applicable for argument types: (java.lang.String, java.lang.String, java.lang.String) values: [String, NAME, "VALUE"] Possible solutions: getBuildConfigFields()

[Maragues]

I have a solution of my own tho it's probably fragile, so I'd be happy to see a better one. I'll post it in 5 minutes.

[Xavier Ducrohet]

oh yeah, mergedFlavor is not of the proper type for this. let me look.

[Maragues]

Hi Xavier, I've updated my answer with a working version, but I'm curious if there's a better way (there must be, I guess). Thanks for your work!

[Xavier Ducrohet]

well this looks quite ugly, but I guess there's no better way right now. We'll have to improve this. code.google.com/p/android/issues/detail?id=67416

[Maragues]

Thanks, I'll keep an eye on that bug.

[JJD]

@XavierDucrohet Any news here?

[TWiStErRob]

You can use the public API, no need for ClassFieldImpl: com.android.builder.model.ClassField apiKeyField and then declare def createClassField = com.android.builder.core.AndroidBuilder.&createClassField and then instead of calling new ClassFieldImpl(...) you can just call createClassField(...).