build.gradle

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

project.ext {
    buildToolsVersion = "28.0.3"
    minSdkVersion = 14
    targetSdkVersion = 28
    compileSdkVersion = 28

    supportVersion = "28.0.0"

    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8

    versionCode = 12
    versionName = "1.2.1"

}

buildscript {
    ext.kotlin_version = '1.3.31'

    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url 'https://maven.google.com' }
        google()
    }
}

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