PreferenceBuilder<T> class

PreferenceBuilder is exactly like a StreamBuilder but without the need to provide initialData. It also solves the initial flicker problem that happens when a StreamBuilder transitions from its initialData to the values in it stream.

If the preference has a persisted non-null value, the initial build will be done with that value. Otherwise the initial build will be done with the defaultValue of the preference.

If a preference emits a value identical to the last emitted value, builder will not be called as it would be unnecessary to do so.

Inheritance

Constructors

PreferenceBuilder({required Preference<T> preference, required PreferenceWidgetBuilder<T> builder})

Properties

builder → PreferenceWidgetBuilder<T>
The function that builds a widget when a preference has new data.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
preference → Preference<T>
The preference on which you want to react and rebuild your widgets based on.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

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