ButtonBar class

An end-aligned row of buttons.

Places the buttons horizontally according to the padding in the current ButtonTheme. The children are laid out in a Row with MainAxisAlignment.end. When the Directionality is TextDirection.ltr, the button bar's children are right justified and the last child becomes the rightmost child. When the Directionality TextDirection.rtl the children are left justified and the last child becomes the leftmost child.

Used by Dialog to arrange the actions at the bottom of the dialog.

See also:

• RaisedButton, a kind of button.
• FlatButton, another kind of button.
• Card, at the bottom of which it is common to place a ButtonBar.
• Dialog, which uses a ButtonBar for its actions.
• ButtonTheme, which configures the ButtonBar.

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• ButtonBar

Constructors

ButtonBar({Key? key, MainAxisAlignment alignment = MainAxisAlignment.end, MainAxisSize mainAxisSize = MainAxisSize.max, List<Widget>? children = const <Widget>[]})

Creates a button bar.

const

Properties

alignment → MainAxisAlignment

How the children should be placed along the horizontal axis.

final

children → List<Widget>?

The buttons to arrange horizontally.

final

hashCode → int

The hash code for this object.

no setter, inherited

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

mainAxisSize → MainAxisSize

How much horizontal space is available. See Row.mainAxisSize.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

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.

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