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

1 vote189 views1 answer
A splash screen was provided to Flutter, but this is deprecated. See flutter.dev/go/android-splash-migration for migration steps.
Dart
3 votes176 views1 answer
Flutter format currency fcfa
Dart
1 vote181 views1 answer
Flutter extend two classes
Dart
7 votes203 views2 answers
Flutter kill
Dart
0 vote193 views1 answer
Flutter compute
Dart
5 votes186 views1 answer
Flutter checkbox color
Dart
5 votes215 views1 answer
Dart timer repeat
Dart
20 votes211 views5 answers
Flutter get width of screen
Dart
0 vote185 views1 answer
Dart get return value of future function
Dart
2 votes171 views5 answers
Flutter container
Dart