build.gradle

buildscript {
    ext.versions = [
            'kotlin': '1.2.30',
            'supportLibrary': '27.1.0'
    ]

    repositories {
        jcenter()
        google()
    }

    dependencies {
        classpath "com.android.tools.build:gradle:3.1.0-rc01"
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${versions.kotlin}"
    }
}

repositories {
    jcenter()
    google()
}

apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 27

    defaultConfig {
        minSdkVersion 16
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

    lintOptions {
        checkTestSources true
        ignoreWarnings true
    }
}

dependencies {
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:${versions.kotlin}"
    implementation "com.android.support:support-annotations:${versions.supportLibrary}"
    implementation "com.android.support:support-compat:${versions.supportLibrary}"

    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}