visibility_detector library Null safety

Classes

SliverVisibilityDetector
VisibilityDetector
A VisibilityDetector widget fires a specified callback when the widget changes visibility. [...]
VisibilityDetectorController
A VisibilityDetectorController is a singleton object that can perform actions and change configuration for all VisibilityDetector widgets.
VisibilityInfo
Data passed to the VisibilityDetector.onVisibilityChanged callback.

Typedefs

VisibilityChangedCallback = void Function(VisibilityInfo info)