Android Studio 3.3 navigation editor | Android Tutorials
У вашего броузера проблема в совместимости с HTML5
In this Android tutorial, I'm going to walk you thorough the basics of using Android Studio's new Navigation Editor library that is introduced in version 3.3.
Android developer navigation docs link: https://developer.android.com/topic/libraries/architecture/navigation/navigation-implementing
Feel free to checkout this in my git repository:
https://github.com/serarmatloob/NavEditorExample