TxRadio<T> class
一个Material风格的单选按钮。
用于在多个互斥值之间进行选择。 当一组中的一个单选按钮被选中时，该组中的其他单选按钮将停止 被选中。 这些值的类型为“T”，即 Radio 类的类型参数。 枚举通常用于此目的。
单选按钮本身不保持任何状态。 相反，选择选项会调用 onChanged 回调，将 value 作为 参数传递。 如果 groupValue 和 value 匹配，则将选择此选项。 大多数小部件将通过 调用 State.setState 更新单选按钮的 groupValue 来响应 onChanged。
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- TxRadio
Constructors
-
TxRadio.new({required T value, required T? groupValue, required ValueChanged<
T?> ? onChanged, Key? key, MouseCursor? mouseCursor, bool toggleable = false, Color? activeColor, MaterialStateProperty<Color?> ? fillColor, Color? focusColor, Color? hoverColor, MaterialStateProperty<Color?> ? overlayColor, double? splashRadius, MaterialTapTargetSize? materialTapTargetSize, VisualDensity? visualDensity, FocusNode? focusNode, bool autofocus = false, OutlinedBorder? shape, BorderSide? side}) -
创建一个Material风格的单选按钮
const
Properties
- activeColor → Color?
-
选择此单选按钮时使用的颜色。
final
- autofocus → bool
-
True if this widget will be selected as the initial focus when no other
node in its scope is currently focused.
final
-
fillColor
→ MaterialStateProperty<
Color?> ? -
在所有 MaterialState 中填充单选按钮的颜色。
final
- focusColor → Color?
-
单选按钮的 Material 具有输入焦点时的颜色。
final
- focusNode → FocusNode?
-
An optional focus node to use as the focus node for this widget.
final
- groupValue → T?
-
一组单选按钮的当前选定值。
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- hoverColor → Color?
-
当指针悬停在收音机上方时，单选按钮 Material 的颜色。
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- materialTapTargetSize → MaterialTapTargetSize?
-
Configures the minimum size of the tap target.
final
- mouseCursor → MouseCursor?
-
The cursor for a mouse pointer when it enters or is hovering over the
widget.
final
-
onChanged
→ ValueChanged<
T?> ? -
当用户选择此单选按钮时调用。
final
-
overlayColor
→ MaterialStateProperty<
Color?> ? -
The color for the radio's Material.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shape → OutlinedBorder?
-
The shape of the checkbox's Material.
final
- side → BorderSide?
-
The color and width of the checkbox's border.
final
- splashRadius → double?
-
The splash radius of the circular Material ink response.
final
- toggleable → bool
-
如果允许通过在选中时再次选择此单选按钮将其返回到不确定状态，则设置为 true。
final
- value → T
-
此单选按钮表示的值。
final
- visualDensity → VisualDensity?
-
Defines how compact the radio's layout will be.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< TxRadio< 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.
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