build.gradle

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

buildscript {
    repositories {
        google()
        jcenter()
        maven { url 'https://maven.fabric.io/public' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0-alpha12'
        classpath 'com.google.gms:google-services:4.0.1'
        classpath 'io.fabric.tools:gradle:1.25.4'

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

allprojects {
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }
    }
}

ext {
    compileSdkVersion = 28
    targetSdkVersion = 28
    minSdkVersion = 17
    versionMajor = 4
    versionMinor = 0
    versionPatch = 0

}

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

private Integer generateVersionCode(Integer variant) {
    return ext.versionMajor * 10000 + ext.versionMinor * 1000 + ext.versionPatch * 100 + variant
}

private String generateVersionName() {
    String versionName = "${ext.versionMajor}.${ext.versionMinor}.${ext.versionPatch}"
    return versionName;
}