apkの名前をいい感じにする

app.gradle

applicationVariants.all { variant ->
    variant.outputs.each { output ->
        if (output.outputFile != null && output.outputFile.name.endsWith('.apk')) {
            def nameSuffix = variant.buildType.hasProperty('versionNameSuffix') ? variant.buildType.versionNameSuffix : ""
            def newName = "${APPLICATION_NAME}-${defaultConfig.versionName}${nameSuffix}.apk"
            output.outputFile = new File(output.outputFile.parent, newName)
        }
    }
}