Override debug build type signing config with flavor signing config

Question

I've got an Android app that has 2 flavors: internal and production, and there are 2 build types as well: debug and release.

I'm trying to assign signing configs based on the flavor, which according to the documentation is doable. I've looked and found other answers to this, but none of them seem to work. Everything compiles, but the app is being signed with the debug keystore local to my machine.

Here is my gradle file:

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 22
        versionCode 1
        versionName "1.0.0"
    }

    signingConfigs {
        internal {
            storeFile file("../internal.keystore")
            storePassword "password"
            keyAlias "user"
            keyPassword "password"
        }
        production {
            storeFile file("../production.keystore")
            storePassword "password"
            keyAlias "user"
            keyPassword "password"
        }
    }

    productFlavors {
        internal {
            signingConfig signingConfigs.internal
            applicationId 'com.test.test.internal'
        }
        production {
            signingConfig signingConfigs.production
            applicationId 'com.test.test'
        }
    }

    buildTypes {
        debug {
            applicationIdSuffix ".d"
        }
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    variantFilter { variant ->
        if (variant.buildType.name.equals('debug')
                && variant.getFlavors().get(0).name.equals('production')) {
            variant.setIgnore(true);
        }
    }
}

Note: I'm also compiling with classpath 'com.android.tools.build:gradle:1.1.3'

Answer 1

It seems that by default, Android has a signingConfig set on the debug build type (the android debug keystore), and when the signingConfig is set for the build type, the signingConfig is ignored for the flavor.

The solution is to set the signingConfig to null on the debug build type. Then the signingConfig given for the flavor will be used instead:

buildTypes {
        debug {
            // Set to null to override default debug keystore and defer to the product flavor.
            signingConfig null
            applicationIdSuffix ".d"
        }
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }