Name APK output file in following format - {AppName}-{ProductFlavorName}-{BuildTypeName}-{shortGitSha}.apk (Works with Android Gradle Plugin 3.x)

gistfile1.txt

//1. Put this file in the root of your project
//2. Add apply from: "../artifacts.gradle" to the end of your app module's build.gradle file

android.applicationVariants.all { variant ->
    def appName
    def shortGitSha = 'git rev-parse --short HEAD'.execute().text.trim()
    //Check if an applicationName property is supplied; if not use the name of the parent project.
    if (project.hasProperty("applicationName")) {
        appName = applicationName
    } else {
        appName = parent.name
    }

    variant.outputs.all {
        outputFileName = "${appName}-${variant.mergedFlavor.versionName}-${variant.productFlavors[0].name}-${variant.buildType.name}-${shortGitSha}.apk"
    }
}