Button class
Buttons allow users to take actions, and make choices, with a single tap
- Inheritance
- Implementers
Constructors
- Button({Key? key, bool loading = false, bool disabled = false, bool autofocus = false, FocusNode? focusNode, VoidCallback? onPressed, ButtonEventController? eventsController, Curve? curve, Duration? duration, ButtonStyle? style, ButtonVariant? variant, ButtonSeverity? severity, String? tooltip, Widget? leading, Widget? trailing, required Widget child})
-
Create a button
const
- Button.block({Key? key, CrossAxisAlignment? alignChildren, MainAxisAlignment? justifyChildren, bool expanded = true, bool loading = false, bool disabled = false, bool autofocus = false, FocusNode? focusNode, VoidCallback? onPressed, ButtonEventController? eventsController, Curve? curve, Duration? duration, ButtonVariant? variant, ButtonSeverity? severity, ButtonStyle? style, String? tooltip, Widget? leading, Widget? trailing, required Widget child})
- Create a block button
- Button.icon({Key? key, BoxShape shape = BoxShape.circle, double? size, bool loading = false, bool disabled = false, bool autofocus = false, FocusNode? focusNode, VoidCallback? onPressed, ButtonEventController? eventsController, Curve? curve, Duration? duration, ButtonVariant? variant, ButtonSeverity? severity, ButtonStyle? style, String? tooltip, Widget? leading, Widget? trailing, required Widget child})
- Create an icon button
Properties
- additionalStyle → ButtonStyle?
-
Additional style to be merge with style
final
- autofocus → bool
-
True if this widget will be selected as the initial focus when no other
node in its scope is currently focused.
final
- child → Widget
-
The widget below this widget in the tree.
final
- curve → Curve?
-
The curve to apply when animating the parameters of this widget.
final
- disabled → bool
-
Whether or not this button is disabled for input.
final
- duration → Duration?
-
The duration over which to animate the parameters of this widget.
final
- effectiveStyle → dynamic
-
The style merged with additionalStyle
no setter
- eventsController → ButtonEventController?
-
Used by widgets that expose their internal event
for the sake of extensions that add support for additional events.
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.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- leading → Widget?
-
A custom widget to display prior to the button's child.
final
- loading → bool
-
Whether or not this button is in loading state.
final
- onPressed → VoidCallback?
-
Called when the user taps the button.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- severity → ButtonSeverity?
-
Type of the button severity
final
- style → ButtonStyle?
-
The style to be applied to the button.
final
- tooltip → String?
-
Tooltip string to be used for the body area of the button.
final
- trailing → Widget?
-
A custom widget to display next to the button's child.
final
- variant → ButtonVariant?
-
Type of the button variant
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.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
override
-
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}) → 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