Chip class Null safety

A Material Design chip.

Chips are compact elements that represent an attribute, text, entity, or action.

Supplying a non-null onDeleted callback will cause the chip to include a button for deleting the chip.

Its ancestors must include Material, MediaQuery, Directionality, and MaterialLocalizations. Typically all of these widgets are provided by MaterialApp and Scaffold. The label and clipBehavior arguments must not be null.

link 
Chip(
  avatar: CircleAvatar(
    backgroundColor: Colors.grey.shade800,
    child: const Text('AB'),
  ),
  label: const Text('Aaron Burr'),
)

See also:

  • InputChip, a chip that represents a complex piece of information, such as an entity (person, place, or thing) or conversational text, in a compact form.
  • ChoiceChip, allows a single selection from a set of options. Choice chips contain related descriptive text or categories.
  • FilterChip, uses tags or descriptive words as a way to filter content.
  • ActionChip, represents an action related to primary content.
  • CircleAvatar, which shows images or initials of entities.
  • Wrap, A widget that displays its children in multiple horizontal or vertical runs.
  • material.io/design/components/chips.html
Inheritance
Implemented types

Constructors

Chip({Key? key, Widget? avatar, required Widget label, TextStyle? labelStyle, EdgeInsetsGeometry? labelPadding, Widget? deleteIcon, VoidCallback? onDeleted, Color? deleteIconColor, String? deleteButtonTooltipMessage, BorderSide? side, OutlinedBorder? shape, Clip clipBehavior = Clip.none, FocusNode? focusNode, bool autofocus = false, Color? backgroundColor, EdgeInsetsGeometry? padding, VisualDensity? visualDensity, MaterialTapTargetSize? materialTapTargetSize, double? elevation, Color? shadowColor, Color? surfaceTintColor, IconThemeData? iconTheme, @Deprecated('Migrate to deleteButtonTooltipMessage. ' 'This feature was deprecated after v2.10.0-0.3.pre.') bool useDeleteButtonTooltip = true})
Creates a Material Design chip.
const

Properties

autofocus → bool
True if this widget will be selected as the initial focus when no other node in its scope is currently focused.
final
avatar → Widget?
A widget to display prior to the chip's label.
final
backgroundColor → Color?
Color to be used for the unselected, enabled chip's background.
final
clipBehavior → Clip
The content will be clipped (or not) according to this option.
final
deleteButtonTooltipMessage → String?
The message to be used for the chip's delete button tooltip.
final
deleteIcon → Widget?
The icon displayed when onDeleted is set.
final
deleteIconColor → Color?
Used to define the delete icon's color with an IconTheme that contains the icon.
final
elevation → double?
Elevation to be applied on the chip relative to its parent.
final
focusNode → FocusNode?
An optional focus node to use as the focus node for this widget.
final
hashCode → int
The hash code for this object.
nonVirtual">@nonVirtualread-onlyinherited
iconTheme → IconThemeData?
Theme used for all icons in the chip.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
label → Widget
The primary content of the chip.
final
labelPadding → EdgeInsetsGeometry?
The padding around the label widget.
final
labelStyle → TextStyle?
The style to be applied to the chip's label.
final
materialTapTargetSize → MaterialTapTargetSize?
Configures the minimum size of the tap target.
final
onDeleted → VoidCallback?
Called when the user taps the deleteIcon to delete the chip.
final
padding → EdgeInsetsGeometry?
The padding between the contents of the chip and the outside shape.
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
shadowColor → Color?
Color of the chip's shadow when the elevation is greater than 0.
final
shape → OutlinedBorder?
The OutlinedBorder to draw around the chip.
final
side → BorderSide?
The color and weight of the chip's outline.
final
surfaceTintColor → Color?
Color of the chip's surface tint overlay when its elevation is greater than 0.
final
useDeleteButtonTooltip → bool
Whether to use a tooltip on the chip's delete button showing the deleteButtonTooltipMessage.
Deprecated('Migrate to deleteButtonTooltipMessage. ' 'This feature was deprecated after v2.10.0-0.3.pre.')">@Deprecated('Migrate to deleteButtonTooltipMessage. ' 'This feature was deprecated after v2.10.0-0.3.pre.')final
visualDensity → VisualDensity?
Defines how compact the chip's layout will be.
final

Methods

build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
override
createElement() → StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
protected">@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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}) → 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.
nonVirtual">@nonVirtualinherited