apply plugin: 'com.android.application' apply plugin: 'kotlin-android' repositories { jcenter() google() } dependencies { compile "com.android.support:support-v4:27.0.2" compile "com.android.support:support-v13:27.0.2" compile "com.android.support:cardview-v7:27.0.2" compile "com.android.support:appcompat-v7:27.0.2" compile 'com.android.support:design:27.0.2' compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" } List<String> dirs = ['main'] android { compileSdkVersion 27 defaultConfig { minSdkVersion 15 targetSdkVersion 27 } compileOptions { sourceCompatibility JavaVersion.VERSION_1_7 targetCompatibility JavaVersion.VERSION_1_7 } sourceSets { main { dirs.each { dir -> java.srcDirs "src/${dir}/java" res.srcDirs "src/${dir}/res" } } androidTest.setRoot('tests') androidTest.java.srcDirs = ['tests/src'] } }