Picker class

Picker

Constructors

Picker({required PickerAdapter adapter, List<PickerDelimiter>? delimiter, List<int>? selecteds, double height = 150.0, double itemExtent = 28.0, EdgeInsetsGeometry? columnPadding, TextStyle? textStyle, TextStyle? cancelTextStyle, TextStyle? confirmTextStyle, TextStyle? selectedTextStyle, IconThemeData? selectedIconTheme, TextAlign textAlign = TextAlign.start, double? textScaleFactor, Widget? title, Widget? cancel, Widget? confirm, String? cancelText, String? confirmText, Color? backgroundColor = Colors.white, Color? containerColor, Color? headerColor, WidgetBuilder? builderHeader, dynamic changeToFirst = false, bool hideHeader = false, bool looping = false, bool reversedOrder = false, Decoration? headerDecoration, List<int>? columnFlex, Widget? footer, int smooth = 0, double magnification = 1.0, double diameterRatio = 1.1, double squeeze = 1.45, Widget selectionOverlay = const CupertinoPickerDefaultSelectionOverlay(), PickerItemBuilder? onBuilderItem, VoidCallback? onCancel, PickerSelectedCallback? onSelect, PickerConfirmBeforeCallback? onConfirmBefore, PickerConfirmCallback? onConfirm})

Properties

adapter ↔ PickerAdapter
Picker adapter, Used to provide data and generate widgets
getter/setter pair
backgroundColor → Color?
final
builderHeader → WidgetBuilder?
Generate a custom header， hideHeader = true
final
cancel → Widget?
final
cancelText → String?
final
cancelTextStyle → TextStyle?
final
changeToFirst → dynamic
When the previous level selection changes, scroll the child to the first item.
final
columnFlex → List<int>?
Specify flex for each column
final
columnPadding → EdgeInsetsGeometry?
final
confirm → Widget?
final
confirmText → String?
final
confirmTextStyle → TextStyle?
final
containerColor → Color?
final
delimiter → List<PickerDelimiter>?
insert separator before picker columns
final
diameterRatio → double
final
final
hashCode → int
The hash code for this object.
no setterinherited
headerColor → Color?
final
headerDecoration → Decoration?
final
height → double
final
hideHeader → bool
Hide head
final
itemExtent → double
Height of list item
final
looping → bool
List item loop
final
magnification → double
final
onBuilderItem → PickerItemBuilder?
Generate a custom item widget, If 'null' is returned, the default builder is used
final
onCancel → VoidCallback?
final
onConfirm → PickerConfirmCallback?
final
onConfirmBefore → PickerConfirmBeforeCallback?
final
onSelect → PickerSelectedCallback?
final
reversedOrder → bool
Show pickers in reversed order
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
selectedIconTheme → IconThemeData?
final
selecteds ↔ List<int>
Index of currently selected items
getter/setter pair
selectedTextStyle → TextStyle?
final
selectionOverlay → Widget
A widget overlaid on the picker to highlight the currently selected entry.
final
smooth → int
Delay generation for smoother animation, This is the number of milliseconds to wait. It is recommended to > = 200
final
squeeze → double
final
state → PickerWidgetState?
no setter
textAlign → TextAlign
final
textScaleFactor → double?
Text scaling factor
final
textStyle → TextStyle?
final
title → Widget?
final
widget → Widget?
no setter

Methods

doCancel(BuildContext context) → void
取消
doConfirm(BuildContext context) → void
确定
getSelectedValues() → List
获取当前选择的值 Get the value of the current selection
makePicker([ThemeData? themeData, bool isModal = false, Key? key]) → Widget
生成picker控件
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
show(ScaffoldState state, {ThemeData? themeData, Color? backgroundColor, PickerWidgetBuilder? builder}) → void
show picker bottom sheet
showBottomSheet(BuildContext context, {ThemeData? themeData, Color? backgroundColor, PickerWidgetBuilder? builder}) → void
show picker bottom sheet
showDialog(BuildContext context, {bool barrierDismissible = true, Color? backgroundColor, PickerWidgetBuilder? builder, Key? key}) → Future<List<int>?>
show dialog picker
showModal<T>(BuildContext context, {ThemeData? themeData, bool isScrollControlled = false, bool useRootNavigator = false, Color? backgroundColor, PickerWidgetBuilder? builder}) → Future<T?>
Display modal picker
toString() → String
A string representation of this object.
inherited
updateColumn(int index, [bool all = false]) → void
弹制更新指定列的内容 当 onSelect 事件中，修改了当前列前面的列的内容时，可以调用此方法来更新显示

Operators

operator ==(Object other) → bool
The equality operator.
inherited

Constants

DefaultTextSize → const double