sliding-panel

A ViewGroup that implements a sliding panel that is part of the view hierarchy, not above it.

Difference from other libraries

All other implementations of the bottom sheet pattern and sliding panel pattern implement a panel that sits above all the other Views of the app. When the panel is collapsed (but visible) the only way to set its position is by using a peek factor (its distance from the bottom of the screen).

With this library the sliding panel is placed exactly where it is supposed to be in the view hierarchy, just like it would be in a vertical (or horizontal) LinearLayout. It doesn't sit above other Views.

from The Android Arsenal