build.gradle

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

buildscript {
    ext.kotlin_version = '1.3.21'
    ext.anko_version = '0.9'
    ext.google_services = '4.3.0'

    repositories {
        jcenter()
        maven { url 'https://maven.fabric.io/public' }
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "com.google.gms:google-services:$google_services"
        classpath 'io.fabric.tools:gradle:1.31.0'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        maven {
            url "https://jitpack.io"
        }
        maven {
            url 'https://oss.sonatype.org/content/repositories/snapshots/'
        }
        maven {
            url 'https://maven.fabric.io/public'
        }
        maven {
            url 'https://maven.google.com/'
            name 'Google'
        }
    }
}

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