Add to your project-level build.gradle file:

Kotlin

allprojects {
    repositories {

    }
}

Groovy

allprojects {
    repositories {

    }
}
Add to your app-level build.gradle file:

Kotlin

dependencies {

}

Groovy

dependencies {

}
Add to your gradle.properties file: 
android.useandroidX=true
android.enableJetifier=true