Material simple menu implementations?

Question

Android

Good. Do you know existing solutions to implement material simple menu?
https://material.io/guidelines/components/menus.ht...
Unlike a simple PopupMenu, Simple Menu has several differences:
1. it is displayed on top of the view that calls the menu
2. when called, it scrolls to the selected position (if any free space)

Answer 1

What does "existing solutions for implementation" mean? Google has already written everything for you. Enough to put it together.
Just specify a theme for PopupMenu: Material or AppCompat, whichever you use there; install overlapAnchor, popupMenuStyle.
And to make it scroll as you need, you can play around with DropDown's.