build.gradle

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

    ext {
        // Sdk and tools
        compileSdkVersion = 29
        buildToolsVersion = "29.0.3"

        minSdkVersion = 23
        targetSdkVersion = 29

        // version code and name
        versionCode = 1
        versionName = '1.0'

        // Kotlin
        kotlin_version = '1.3.72'

        lifecycle_version = "2.2.0"
        nav_version = '2.3.0'

        // Material Design
        material_version = "1.2.0"
        appcompact_version = "1.2.0"

        // Constraint Layout
        constraint_layout_version = "1.1.3"
    }

    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.0.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

        // 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
}