Button class

A button gives the user a way to trigger an immediate action

Constructors

Button({Key? key, Widget? child, ButtonStateWidgetBuilder? builder, ButtonThemeData? style, VoidCallback? onPressed, VoidCallback? onLongPress, String? semanticLabel, FocusNode? focusNode, bool autofocus = false}): Creates a fluent-styled button.
const
Button.icon({Key? key, required Widget icon, ButtonThemeData? style, IconThemeButtonStateBuilder? iconTheme, VoidCallback? onPressed, VoidCallback? onLongPress, String? semanticLabel, FocusNode? focusNode, bool autofocus = false}): Creates a button with an icon. Uses IconButton under the hood
Button.toggle({Key? key, required bool checked, required ValueChanged<bool> onChanged, Widget? child, ToggleButtonThemeData? style, FocusNode? focusNode, bool autofocus = false, String? semanticLabel}): Creates a button that can be on or of. Uses a ToggleButton under the hood

autofocus → bool: True if this widget will be selected as the initial focus when no other node in its scope is currently focused.
final
builder → ButtonStateWidgetBuilder?: Build the button according to its current state.
final
child → Widget?: The content of the button. Usually a Text widget.
final
enabled → bool: Whether the button is enabled or not.
no setter
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
onLongPress → VoidCallback?: Callback to when the button gets pressed for a long time.
final
onPressed → VoidCallback?: Callback to when the button get pressed. If null, the button will be considered disabled
final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
semanticLabel → String?: Semantic label for the input.
final
style → ButtonThemeData?: The style of the button. If non-null, it's mescled with ThemeData.buttonThemeData
final
type → _ButtonType: final

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _ButtonState: Creates the mutable state for this widget at a given location in the tree.
override
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