stacked_slider
How to use
StackedSlider(
swipeMultiplier: 0.009,
height: 200,
initialIndex: 2,
onChange: (index) => print('$index is in front'),
children: <Widget>[/*...*/],
StackedSlider(
swipeMultiplier: 0.009,
height: 200,
initialIndex: 2,
onChange: (index) => print('$index is in front'),
children: <Widget>[/*...*/],