ScrollEndNotification class
A notification that a Scrollable widget has stopped scrolling.
This sample shows how you can trigger an auto-scroll, which aligns the last
partially visible fixed-height list item, by listening for this
notification with a NotificationListener. This sort of thing can also
be done by listening to the ScrollController's
ScrollPosition.isScrollingNotifier. An alternative example is provided
with ScrollPosition.isScrollingNotifier.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.ScrollEndNotification.1 mysample
This example auto-scrolls one special "aligned item" sliver to
the top or bottom of the viewport, whenever it's partially visible
(because it overlaps the top or bottom of the viewport). This
example differs from the previous one in that the layout of an
individual sliver is retrieved from its RenderSliver via a
GlobalKey. The example does not rely on all of the list items
having the same extent.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.ScrollEndNotification.2 mysample
- ScrollStartNotification, which indicates that scrolling has started.
- ScrollNotification, which describes the notification lifecycle.
- Inheritance
-
- Object
- Notification
- LayoutChangedNotification
- ScrollNotification
- ScrollEndNotification
Constructors
- ScrollEndNotification({required ScrollMetrics metrics, required BuildContext context, DragEndDetails? dragDetails})
- Creates a notification that a Scrollable widget has stopped scrolling.
Properties
- context → BuildContext?
-
The build context of the widget that fired this notification.
finalinherited
- depth → int
-
The number of viewports that this notification has bubbled through.
no setterinherited
- dragDetails → DragEndDetails?
-
If the Scrollable stopped scrolling because of a drag, the details about
that drag end.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- metrics → ScrollMetrics
-
A description of a Scrollable's contents, useful for modeling the state
of its viewport.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
debugFillDescription(
List< String> description) → void -
Add additional information to the given description for use by toString.
override
-
dispatch(
BuildContext? target) → void -
Start bubbling this notification at the given build context.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited