UserScrollNotification in flutter

NotificationListener<ScrollNotification>(
  onNotification: (ScrollNotification notification) {
    if (notification is UserScrollNotification) {
      if (notification.direction == ScrollDirection.forward) {
        // Handle scroll down.
      } else if (notification.direction == ScrollDirection.reverse) {
        // Handle scroll up.
      }
    }

    // Returning null (or false) to
    // "allow the notification to continue to be dispatched to further ancestors".
    return null;
  },
  child: ListView(..), // Or whatever scroll view you use.
)

Source: stackoverflow.com

Similar codes

2 votes376 views1 answer
How to load gif in flutter
Dart
3 votes346 views1 answer
Flutter tabbar
Dart
8 votes337 views3 answers
How to give shape to card in flutter
Dart
1 vote340 views1 answer
Dart list insert
Dart
7 votes338 views1 answer
BoxShadow class - painting library - Flutter API
Dart
0 vote362 views1 answer
Flutter open phone dialer
Dart
0 vote327 views1 answer
Flutter iterate over list widget
Dart
-2 votes356 views1 answer
Dart switch with classes
Dart
0 vote346 views1 answer
Flutter concat string list
Dart
-1 vote403 views1 answer
Flutter navigation pop
Dart