build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    ext.gradle_version_s = '3.1.2'
    //ext.gradle_version_a = '3.1.0-alpha04'

    ext.android_support_ver_s = '27.1.1'
    //ext.android_support_ver_b = '26.0.0-beta1'

    ext.junit_s = "4.12"
    ext.support_espresso_s = '3.0.2'
    ext.support_runner_s = '1.0.2'

    //ext.butter_knife_ver_s = '8.8.1'

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.1.2'
        

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}