TextButton class Null safety

A Material Design "Text Button".

Use text buttons on toolbars, in dialogs, or inline with other content but offset from that content with padding so that the button's presence is obvious. Text buttons do not have visible borders and must therefore rely on their position relative to other content for context. In dialogs and cards, they should be grouped together in one of the bottom corners. Avoid using text buttons where they would blend in with other content, for example in the middle of lists.

A text 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. The button reacts to touches by filling with the style's ButtonStyle.backgroundColor.

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

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

If the onPressed and onLongPress callbacks are null, then this button will be disabled, it will not react to touch.

This sample shows how to render a disabled TextButton, an enabled TextButton and lastly a TextButton with gradient background.

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

This sample demonstrates using the statesController parameter to create a button that adds support for MaterialState.selected.

To create a local project with this code sample, run:
flutter create --sample=material.TextButton.2 mysample

Constructors

TextButton({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 a TextButton.
const
TextButton.icon({Key? key, required VoidCallback? onPressed, VoidCallback? onLongPress, ValueChanged<bool>? onHover, ValueChanged<bool>? onFocusChange, 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 TextButtonThemeData.style of the closest TextButtonTheme ancestor.
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 a text button ButtonStyle given simple values.

Flutter
material
TextButton class