```buildscript { ext["kotlin_version"] = "1.3....
# android
k
Copy code
buildscript {
    ext["kotlin_version"] = "1.3.21"
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath("com.android.tools.build:gradle:3.4.0")
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${ext["kotlin_version"]}")
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()

    }
}

task<Delete>("clean") {
    delete(rootProject.buildDir)
}