A material design checkbox.

The checkbox itself does not maintain any state. Instead, when the state of the checkbox changes, the widget calls the onChanged callback. Most widgets that use a checkbox will listen for the onChanged callback and rebuild the checkbox with a new value to update the visual appearance of the checkbox.

Requires one of its ancestors to be a Material widget.

See also:

Inheritance

Constructors

Checkbox({Key key, @required bool value, @required ValueChanged<bool> onChanged, Color activeColor })
Creates a material design checkbox. [...]
const

Properties

activeColor Color
The color to use when this checkbox is checked. [...]
final
onChanged ValueChanged<bool>
Called when the value of the checkbox should change. [...]
final
value bool
Whether this checkbox is checked. [...]
final
hashCode int
The hash code for this object. [...]
read-only, inherited
key Key
Controls how one widget replaces another widget in the tree. [...]
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

createState() → _CheckboxState
Creates the mutable state for this widget at a given location in the tree. [...]
createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
debugFillDescription(List<String> description) → void
Add additional information to the given description for use by toString. [...]
@mustCallSuper, @protected, inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed. [...]
inherited
toString() String
Returns a string representation of this object.
inherited
toStringShort() String
A short, textual description of this widget.
inherited

Operators

operator ==(other) bool
The equality operator. [...]
inherited

Constants

width double
The width of a checkbox widget.
18.0