Autocomplete<T extends Object> class Null safety

A widget for helping the user make a selection by entering some text and choosing from among a list of options.

The user's text input is received in a field built with the fieldViewBuilder parameter. The options to be displayed are determined using optionsBuilder and rendered with optionsViewBuilder.

This example shows how to create a very basic Autocomplete widget using the default UI.
To create a local project with this code sample, run:
flutter create --sample=material.Autocomplete.1 mysample

This example shows how to create an Autocomplete widget with a custom type. Try searching with text from the name or email field.
To create a local project with this code sample, run:
flutter create --sample=material.Autocomplete.2 mysample

See also:

  • RawAutocomplete, which is what Autocomplete is built upon, and which contains more detailed examples.
Inheritance

Constructors

Autocomplete({Key? key, required AutocompleteOptionsBuilder<T> optionsBuilder, AutocompleteOptionToString<T> displayStringForOption = RawAutocomplete.defaultStringForOption, AutocompleteFieldViewBuilder fieldViewBuilder = _defaultFieldViewBuilder, AutocompleteOnSelected<T>? onSelected, double optionsMaxHeight = 200.0, AutocompleteOptionsViewBuilder<T>? optionsViewBuilder, TextEditingValue? initialValue})
Creates an instance of Autocomplete.
const

Properties

displayStringForOption AutocompleteOptionToString<T>
Returns the string to display in the field when the option is selected.
final
fieldViewBuilder AutocompleteFieldViewBuilder
Builds the field whose input is used to get the options.
final
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
initialValue TextEditingValue?
The initial value to use for the text field.
final
key Key?
Controls how one widget replaces another widget in the tree.
final, inherited
onSelected AutocompleteOnSelected<T>?
Called when an option is selected by the user.
final
optionsBuilder AutocompleteOptionsBuilder<T>
A function that returns the current selectable options objects given the current TextEditingValue.
final
optionsMaxHeight double
The maximum height used for the default Material options list widget.
final
optionsViewBuilder AutocompleteOptionsViewBuilder<T>?
Builds the selectable options widgets from a list of options objects.
final
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

build(BuildContext context) Widget
Describes the part of the user interface represented by this widget.
override
createElement() StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
inherited
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protected, inherited
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.
@nonVirtual, inherited