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'
        gradleVersion = '3.1.4'
        dataBindingCompilerVersion = gradleVersion
        navigationVersion = '1.0.0-alpha05'
        supportlibVersion = "1.0.0"

    }

    repositories {
        google()
        jcenter()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath "android.arch.navigation:navigation-safe-args-gradle-plugin:$navigationVersion"

        classpath "com.android.databinding:compiler:3.1.4"
        classpath 'com.google.gms:google-services:4.3.0'

        // 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' }

    }
}

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