build.gradle

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

buildscript {
    ext.kotlin_version = '1.3.31'
    repositories {
        jcenter()
        google()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        classpath 'me.tatarka:gradle-retrolambda:3.7.0'
        classpath 'com.github.dcendents:android-maven-gradle-plugin:2.1'
        classpath 'com.jfrog.bintray.gradle:gradle-bintray-plugin:1.7.3'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        google()
    }
}

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

ext {
    android_compileSdkVersion = 27
    android_buildToolsVersion = '28.0.3'
    android_minSdkVersion = 17
    android_targetSdkVersion = 27
    lib_appcompat = 'com.android.support:appcompat-v7:27.1.1'
    lib_annotations = 'com.android.support:support-annotations:27.1.1'
}