scrollNotificationPredicate property

ScrollNotificationPredicate? scrollNotificationPredicate

A predicate for ScrollNotification, used to determine whether observation can be triggered.

Generally combined with defaultScrollNotificationPredicate to check whether notification.depth == 0, which means that the notification did not bubble through any intervening scrolling widgets. This can avoid the unnecessary observation calculations caused by intervening scrolling widgets, which in turn improves performance.

Implementation

final ScrollNotificationPredicate? scrollNotificationPredicate;