"UserScrollNotification in flutter" Code Answer's
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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
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