CupertinoButton class Null safety

An iOS-style button.

Takes in a text or an icon that fades out and in on touch. May optionally have a background.

The padding defaults to 16.0 pixels. When using a CupertinoButton within a fixed height parent, like a CupertinoNavigationBar, a smaller, or even EdgeInsets.zero, should be used to prevent clipping larger child widgets.

This sample shows produces an enabled and disabled CupertinoButton and CupertinoButton.filled.
To create a local project with this code sample, run:
flutter create --sample=cupertino.CupertinoButton.1 mysample

See also:

Inheritance

Constructors

CupertinoButton({Key? key, required Widget child, EdgeInsetsGeometry? padding, Color? color, Color disabledColor = CupertinoColors.quaternarySystemFill, double? minSize = kMinInteractiveDimensionCupertino, double? pressedOpacity = 0.4, BorderRadius? borderRadius = const BorderRadius.all(Radius.circular(8.0)), AlignmentGeometry alignment = Alignment.center, required VoidCallback? onPressed})
Creates an iOS-style button.
const
CupertinoButton.filled({Key? key, required Widget child, EdgeInsetsGeometry? padding, Color disabledColor = CupertinoColors.quaternarySystemFill, double? minSize = kMinInteractiveDimensionCupertino, double? pressedOpacity = 0.4, BorderRadius? borderRadius = const BorderRadius.all(Radius.circular(8.0)), AlignmentGeometry alignment = Alignment.center, required VoidCallback? onPressed})
Creates an iOS-style button with a filled background.
const

Properties

alignment AlignmentGeometry
The alignment of the button's child.
final
borderRadius BorderRadius?
The radius of the button's corners when it has a background color.
final
child Widget
The widget below this widget in the tree.
final
color Color?
The color of the button's background.
final
disabledColor Color
The color of the button's background when the button is disabled.
final
enabled bool
Whether the button is enabled or disabled. Buttons are disabled by default. To enable a button, set its onPressed property to a non-null value.
read-only
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
key Key?
Controls how one widget replaces another widget in the tree.
final, inherited
minSize double?
Minimum size of the button.
final
onPressed VoidCallback?
The callback that is called when the button is tapped or otherwise activated.
final
padding EdgeInsetsGeometry?
The amount of space to surround the child inside the bounds of the button.
final
pressedOpacity double?
The opacity that the button will fade to when it is pressed. The button will have an opacity of 1.0 when it is not pressed.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() State<CupertinoButton>
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.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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.
@nonVirtual, inherited