I tried some libraries from Github but either they don't work or I couldn't figure out how to make them work.
I just want to create a seekbar with float values, with a center of 0.
You can use the Slider
in the Material Components Library
<com.google.android.material.slider.Slider
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:labelBehavior="withinBounds"
android:valueFrom="-10.0"
android:valueTo="10.0"
android:stepSize="1.0"/>
NOTE: it requires the version 1.2.0
(currently 1.2.0-rc01) of the library.