To add to the confusion, at Google I/O 2018 we learned future Support Library updates will be published to the android.support namespace and to a new androidx namespace, as part of AndroidX.

To test this new android.support.percent package, I created my own sample project. As usual, Android Studio created the default build.gradle and activity_mail.xml files.

As part of the Android Jetpack announcement at I/O in May, Google unveiled a redesign for the Android Support Library, called AndroidX. Like its predecessor, AndroidX is designed to help ...