CupertinoDropdownButton<T> class Null safety

Maps the basic dropdown feature to a CupertinoPicker

Inheritance

Constructors

CupertinoDropdownButton({Key? key, required List<DropdownMenuItem<T>>? items, List<Widget> selectedItemBuilder(BuildContext context)?, T? value, void onChanged(T? value)?, Widget? hint, required double itemExtent})
const

Properties

hashCode int
The hash code for this object.
@nonVirtualread-onlyinherited
hint Widget?
final
itemExtent double
final
items List<DropdownMenuItem<T>>?
final
key Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onChanged → (void Function?(T? value)?)
final
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited
selectedItemBuilder → (List<Widget> Function?(BuildContext context)?)
final
value → T?
final

Methods

createElement() StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → _CupertinoDropdownButtonState<T>
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.
@protectedinherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
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.
@nonVirtualinherited