group 'com.example.cw_haven' version '1.0-SNAPSHOT' buildscript { ext.kotlin_version = '1.3.50' repositories { google() jcenter() } dependencies { classpath 'com.android.tools.build:gradle:4.1.0' classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version" } } rootProject.allprojects { repositories { google() jcenter() } } apply plugin: 'com.android.library' apply plugin: 'kotlin-android' android { compileSdkVersion 30 sourceSets { main.java.srcDirs += 'src/main/kotlin' } defaultConfig { minSdkVersion 16 } } dependencies { implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" }