build method

@override Widget build(BuildContext context)

Override this method to build widgets that depend on the state of the listenable (e.g., the current value of the animation).

Implementation

@override
Widget build(BuildContext context) {
  final Animation<double> animation = listenable as Animation<double>;
  // final double _height = 60;
  // print(animation.value);
  return Container(
    decoration: BoxDecoration(color: dotColor, shape: BoxShape.circle),
    margin: EdgeInsets.only(bottom: animation.value, left: 5, right: 5),
    height: dotSize,
    width: dotSize,
  );
}