SliverAnimatedGrid class

A SliverGrid that animates items when they are inserted or removed.

This widget's SliverAnimatedGridState can be used to dynamically insert or remove items. To refer to the SliverAnimatedGridState either provide a GlobalKey or use the static SliverAnimatedGrid.of method from an item's input callback.

This sample application uses a SliverAnimatedGrid to create an animated effect when items are removed or added to the grid.
link

To create a local project with this code sample, run:
flutter create --sample=widgets.SliverAnimatedGrid.1 mysample

See also:

  • AnimatedGrid, a non-sliver scrolling container that animates items when they are inserted into or removed from a grid.
  • SliverGrid, which does not animate items when they are inserted or removed from a grid.
  • SliverList, which displays a non-animated list of items.
  • SliverAnimatedList, which animates items added and removed from a list instead of a grid.
Inheritance

Constructors

SliverAnimatedGrid({Key? key, required AnimatedItemBuilder itemBuilder, required SliverGridDelegate gridDelegate, ChildIndexGetter? findChildIndexCallback, int initialItemCount = 0})
Creates a SliverGrid that animates items when they are inserted or removed.
const

Properties

findChildIndexCallback → ChildIndexGetter?
Called to find the new index of a child based on its key in case of reordering.
finalinherited
gridDelegate → SliverGridDelegate
A delegate that controls the layout of the children within the AnimatedGrid.
final
hashCode → int
The hash code for this object.
no setterinherited
initialItemCount → int
The number of items the AnimatedList or AnimatedGrid will start with.
finalinherited
itemBuilder → AnimatedItemBuilder
Called, as needed, to build children widgets.
finalinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → SliverAnimatedGridState
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Static Methods

maybeOf(BuildContext context) → SliverAnimatedGridState?
The state from the closest instance of this class that encloses the given context.
of(BuildContext context) → SliverAnimatedGridState
The state from the closest instance of this class that encloses the given context.