android {
    defaultConfig {
        vectorDrawables.useSupportLibrary = true
    }
}

implementation  'com.android.support:support-vector-drawable:27.1.1'

https://medium.com/code-better/hiding-api-keys-from-your-android-repository-b23f5598b906

https://stackoverflow.com/questions/46816825/how-to-hide-api-url-and-parameters-in-android-app