OutlinedButton class Null safety

A Material Design "Outlined Button"; essentially a TextButton with an outlined border.

Outlined buttons are medium-emphasis buttons. They contain actions that are important, but they aren’t the primary action in an app.

An outlined button is a label child displayed on a (zero elevation) Material widget. The label's Text and Icon widgets are displayed in the style's ButtonStyle.foregroundColor and the outline's weight and color are defined by ButtonStyle.side. The button reacts to touches by filling with the style's ButtonStyle.overlayColor.

The outlined button's default style is defined by defaultStyleOf. The style of this outline button can be overridden with its style parameter. The style of all text buttons in a subtree can be overridden with the OutlinedButtonTheme and the style of all of the outlined buttons in an app can be overridden with the Theme's ThemeData.outlinedButtonTheme property.

Unlike TextButton or ElevatedButton, outline buttons have a default ButtonStyle.side which defines the appearance of the outline. Because the default side is non-null, it unconditionally overrides the shape's OutlinedBorder.side. In other words, to specify an outlined button's shape and the appearance of its outline, both the ButtonStyle.shape and ButtonStyle.side properties must be specified.

Here is an example of a basic OutlinedButton.

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

The static styleFrom method is a convenient way to create a outlined button ButtonStyle from simple values.

Constructors

OutlinedButton({Key? key, required VoidCallback? onPressed, VoidCallback? onLongPress, ValueChanged<bool>? onHover, ValueChanged<bool>? onFocusChange, ButtonStyle? style, FocusNode? focusNode, bool autofocus = false, Clip clipBehavior = Clip.none, MaterialStatesController? statesController, required Widget child}): Create an OutlinedButton.
const
OutlinedButton.icon({Key? key, required VoidCallback? onPressed, VoidCallback? onLongPress, ButtonStyle? style, FocusNode? focusNode, bool? autofocus, Clip? clipBehavior, required Widget icon, required Widget label}): Create a text button from a pair of widgets that serve as the button's icon and label.
factory

Properties

autofocus → bool: True if this widget will be selected as the initial focus when no other node in its scope is currently focused.
finalinherited
child → Widget?: Typically the button's label.
finalinherited
clipBehavior → Clip: The content will be clipped (or not) according to this option.
finalinherited
enabled → bool: Whether the button is enabled or disabled.
read-onlyinherited
focusNode → FocusNode?: An optional focus node to use as the focus node for this widget.
finalinherited
hashCode → int: The hash code for this object.
nonVirtual">@nonVirtualread-onlyinherited
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
onFocusChange → ValueChanged<bool>?: Handler called when the focus changes.
finalinherited
onHover → ValueChanged<bool>?: Called when a pointer enters or exits the button response area.
finalinherited
onLongPress → VoidCallback?: Called when the button is long-pressed.
finalinherited
onPressed → VoidCallback?: Called when the button is tapped or otherwise activated.
finalinherited
runtimeType → Type: A representation of the runtime type of the object.
read-onlyinherited
statesController → MaterialStatesController?: Represents the interactive "state" of this widget in terms of a set of MaterialStates, like MaterialState.pressed and MaterialState.focused.
finalinherited
style → ButtonStyle?: Customizes this button's appearance.
finalinherited

Methods

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<ButtonStyleButton>: Creates the mutable state for this widget at a given 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
defaultStyleOf(BuildContext context) → ButtonStyle: Defines the button's default appearance.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a non-existent method or property is accessed.
inherited
themeStyleOf(BuildContext context) → ButtonStyle?: Returns the ButtonStyle that belongs to the button's component theme.
override
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

Static Methods

styleFrom({Color? foregroundColor, Color? backgroundColor, Color? disabledForegroundColor, Color? disabledBackgroundColor, Color? shadowColor, Color? surfaceTintColor, double? elevation, TextStyle? textStyle, EdgeInsetsGeometry? padding, Size? minimumSize, Size? fixedSize, Size? maximumSize, BorderSide? side, OutlinedBorder? shape, MouseCursor? enabledMouseCursor, MouseCursor? disabledMouseCursor, VisualDensity? visualDensity, MaterialTapTargetSize? tapTargetSize, Duration? animationDuration, bool? enableFeedback, AlignmentGeometry? alignment, InteractiveInkFeatureFactory? splashFactory, Color? primary, Color? onSurface}) → ButtonStyle: A static convenience method that constructs an outlined button ButtonStyle given simple values.

Flutter
material
OutlinedButton class