WheelPicker class

CupertinoPicker 风格的单列滚轮选择器

Inheritance

Constructors

WheelPicker({Key? key, required int itemCount, int initialIndex = 0, double itemExtent = 40, required String labelBuilder(int index), ValueChanged<int>? onSelectedItemChanged, bool looping = false, TextStyle? selectedTextStyle, TextStyle? unselectedTextStyle})
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
initialIndex → int
初始选中项索引
final
itemCount → int
选项数量
final
itemExtent → double
每项的高度
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
labelBuilder → String Function(int index)
构建每项的文字标签
final
looping → bool
是否循环滚动
final
onSelectedItemChanged → ValueChanged<int>?
选中项变化回调
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectedTextStyle → TextStyle?
选中项文字样式
final
unselectedTextStyle → TextStyle?
未选中项文字样式
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<WheelPicker>
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.
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