onScroll method

Widget onScroll(dynamic onScroll(ScrollMetrics))

Implementation

Widget onScroll(Function(ScrollMetrics) onScroll) {
  return NotificationListener<ScrollNotification>(
    onNotification: (notification) {
      if (notification is ScrollUpdateNotification) {
        onScroll(notification.metrics);
      }
      return false;
    },
    child: this,
  );
}