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 vote99 views1 answer
Flutter return empty widget
Dart
0 vote112 views3 answers
Program type already present: android.support.v4.os.ResultReceiver$MyResultReceiver
Dart
2 votes114 views1 answer
Dart if loops
Dart
2 votes112 views2 answers
Flluter toast
Dart
0 vote113 views1 answer
Dart string to hex
Dart
3 votes115 views1 answer
Dart print item # of a list
Dart
0 vote110 views1 answer
Flutter localstorage clear
Dart
1 vote135 views1 answer
Text field make screen goes white flutter
Dart
1 vote130 views1 answer
Materialstateproperty
Dart
6 votes104 views3 answers
Disable scroll in listview flutter
Dart