build.gradle

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

buildscript {
    //ext.kotlin_version = '1.3.0'
    repositories {
        google()
        jcenter()
        maven { url "https://dl.google.com/dl/android/maven2/"}
        maven { url 'https://jitpack.io' }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.1'
        //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()
        maven { url "https://dl.google.com/dl/android/maven2/"}
        maven { url 'https://jitpack.io' }
    }
}

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