A scrollable list of children that have equal size.
ScrollableList differs from ScrollableLazyList in that ScrollableList uses an Iterable list of children. That makes ScrollableList suitable for a large (but not extremely large or infinite) list of children.
ScrollableList differs from Block and LazyBlock in that ScrollableList requires each of its children to be the same size. That makes ScrollableList more efficient but less flexible than Block and LazyBlock.
Prefer ScrollableViewport when there is only one child.
See also:
- Block, which allows its children to have arbitrary sizes.
- ScrollableLazyList, a more efficient version of ScrollableList.
- LazyBlock, a more efficient version of Block.
- ScrollableViewport, which only has one child.
- Inheritance
- Object
- Widget
- StatelessWidget
- ScrollableList
Constructors
-
ScrollableList({Key key, double initialScrollOffset, Axis scrollDirection: Axis.vertical, ViewportAnchor scrollAnchor: ViewportAnchor.start, ScrollListener onScrollStart, ScrollListener onScroll, ScrollListener onScrollEnd, SnapOffsetCallback snapOffsetCallback, Key scrollableKey, @required double itemExtent, bool itemsWrap: false, EdgeInsets padding, Iterable<Widget> children: const
[] }) -
Creats a scrollable list of children that have equal size.
Properties
- children → Iterable<Widget>
-
The children, some of which might be materialized.
read-only - initialScrollOffset → double
-
The scroll offset this widget should use when first created.
read-only - itemExtent → double
-
The height of each item if scrollDirection is Axis.vertical, otherwise the width of each item.
read-only - itemsWrap → bool
-
Whether the first item should be revealed after scrolling past the last item.
read-only - onScroll → ScrollListener
-
Called whenever this widget's scroll offset changes.
read-only - onScrollEnd → ScrollListener
-
Called whenever this widget stops scrolling.
read-only - onScrollStart → ScrollListener
-
Called whenever this widget starts to scroll.
read-only - padding → EdgeInsets
-
The amount of space by which to inset the children inside the viewport.
read-only - scrollableKey → Key
-
The key for the Scrollable created by this widget.
read-only - scrollAnchor → ViewportAnchor
-
Whether to place first child at the start of the container or the last child at the end of the container, when the scrollable has not been scrolled and has no initial scroll offset.
read-only - scrollDirection → Axis
-
The axis along which this widget should scroll.
read-only - snapOffsetCallback → SnapOffsetCallback
-
Called to determine the offset to which scrolling should snap, when handling a fling.
read-only - hashCode → int
-
Get a hash code for this object.
read-only, inherited - key → Key
-
Controls how one widget replaces another widget in the tree.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
-
createElement(
) → StatelessElement -
Creates a StatelessElement to manage this widget's location in the tree.
inherited -
debugFillDescription(
List<String> description) → void -
Add additional information to the given description for use by toString.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
toStringShort(
) → String -
A short, textual description of this widget.
inherited