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

0 vote268 views1 answer
Error: cannot find symbol public class AssetProvider extends FileProvider
Dart
10 votes278 views1 answer
Flutter debug tag
Dart
0 vote226 views1 answer
Flutter pixel overflow when keyboard
Dart
8 votes305 views3 answers
Text overflow error flutter
Dart
0 vote285 views1 answer
Flutter gray screen
Dart
1 vote296 views1 answer
Flutter Incompatible classes were found in dependencies. Remove them from the classpath or use '-Xskip-metadata-version-check' to suppress errors
Dart
0 vote306 views1 answer
Create publisher account on pub.dev
Dart
14 votes275 views2 answers
Underline text in flutter
Dart
0 vote277 views1 answer
Allow background service in flutter app
Dart
1 vote311 views1 answer
Try adding a case clause for the missing constant, or adding a default clause.dartmissing_enum_constant_in_switch.
Dart