Version names for application variants

flavor_names_build.gradle

android {
  applicationVariants.all { variant ->
    def flavor = variant.mergedFlavor
    def name = flavor.getVersionName()
    def versionName = name + '-' + variant.properties.get('flavorName')
    if (variant.buildType.isDebuggable()) {
       versionName += '-debug';
    }
    flavor.versionName = versionName;
  }
}

Hey Ben! It seems this doesn't work since tools version 24.4.1.

This error suggests to me that the .all method has changed:

Error:(52, 0) Could not find property 'variant' on ProductFlavor_Decorated{name=main, dimension=null, minSdkVersion=ApiVersionImpl{mApiLevel=15, mCodename='null'}, targetSdkVersion=ApiVersionImpl{mApiLevel=23, mCodename='null'}, renderscriptTargetApi=null, renderscriptSupportModeEnabled=null, renderscriptNdkModeEnabled=null, versionCode=13, versionName=1.3.2, applicationId=com.vebego.ally, testApplicationId=null, testInstrumentationRunner=null, testHandleProfiling=null, testFunctionalTest=null, signingConfig=null, resConfig=null, mBuildConfigFields={GIT_SHA=com.android.builder.internal.ClassFieldImpl@3720cfa2, LOGIN_PREFILL_PASSWORD=com.android.builder.internal.ClassFieldImpl@6c7cccce, LOGIN_PREFILL_USERNAME=com.android.builder.internal.ClassFieldImpl@a3d10b3, NAVIGATION_BAR_SHOW_CHAT=com.android.builder.internal.ClassFieldImpl@97c63a88, NAVIGATION_BAR_SHOW_PROTOCOL=com.android.builder.internal.ClassFieldImpl@d45f4cc8, NAVIGATION_BAR_SHOW_SURVEY=com.android.builder.internal.ClassFieldImpl@c34b5206}, mResValues={}, mProguardFiles=[], mConsumerProguardFiles=[], mManifestPlaceholders={}}.

Any ideas?

Never mind, this is invalid; .all works as expected. I had an incorrect reference to an undefined variant elsewhere in my gradle script.