StatefulWidget class abstract

A widget with mutable state managed by a State object.

Inheritance

• Object
• Widget
• StatefulWidget

Implementers

• ActionButton
• AnimatedBuilder
• AnimatedTint
• BlockFocus
• Button
• ChartBuilder
• Checkbox
• ChordHost
• CodeEditor
• CommandPalette
• DebugConsole
• DebugConsoleHost
• DebugOverlay
• DialogAlert
• DialogConfirm
• DialogPrompt
• DialogSelect
• DialogStack
• DiffReviewPane
• ExpansionTile
• FadeModalBarrier
• FadeTint
• FilePicker
• Focusable
• FocusScope
• FutureBuilder
• GestureDetector
• GitDiffViewer
• Image
• ImplicitlyAnimatedWidget
• InputChip
• KeyboardListener
• KeymapHubScope
• LinearProgressIndicator
• ListenableBuilder
• ListView
• MarkdownEditor
• MarkdownText
• Navigator
• Overlay
• PerformanceOverlay
• PopupMenuButton
• Radio
• RangeSlider
• ReloadHost
• ScrollArea
• Scrollbar
• ScrollView
• SelectionArea
• ShortcutSurfaceScope
• SingleChildScrollView
• Slider
• SpinnerIndicator
• StreamBuilder
• Switch
• TextArea
• TextEditor
• TextField
• Tooltip
• ValueListenableBuilder
• Viewport
• VirtualListView
• Wizard

Constructors

StatefulWidget({Key? key})

Creates a stateful widget.

Properties

accessibilityLabel → String?

Optional accessibility label.

no setter, inherited

accessibilityRole → String

Optional accessibility role.

no setter, inherited

children → List<Widget>

Child widgets that receive forwarded messages.

no setter, inherited

debugRenderObjectPassthrough → bool

Whether this widget is intentionally transparent to render-object layouts.

no setter, inherited

degradationSignal → WidgetDegradationSignal

Signal that controls this widget's render budget behavior.

no setter, inherited

focusable → bool

Whether this widget can receive keyboard focus.

no setter, inherited

hashCode → int

The hash code for this object.

no setter, inherited

id → String

Unique identifier for this widget.

no setter, inherited

key → Key?

Key for preserving widget identity.

final, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

theme → Theme

Access the current theme.

no setter, inherited

Methods

buildCachedView<T>(T builder(), Object? cacheKey) → T

Returns a cached view if the cache key matches.

inherited

createState() → State<StatefulWidget>

Creates the mutable State associated with this widget.

handleInit() → Cmd?

Override this instead of init for widget-specific initialization.

inherited

handleIntercept(Msg msg) → (Widget, Cmd?)

Override this to handle messages before they reach children.

inherited

handleUpdate(Msg msg) → (Widget, Cmd?)

Override this to handle messages specific to this widget.

inherited

init() → Cmd?

Called once when the widget is first mounted.

inherited

invalidateCachedView() → void

Clears any cached view for this widget.

inherited

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

shouldRenderAt(DegradationLevel degradationLevel, {required bool subtreeHasFocusedWidget}) → bool

Whether this widget should participate in the current render when degradationLevel is active.

inherited

toString() → String

A string representation of this object.

inherited

update(Msg msg) → (Model, Cmd?)

Handles messages by forwarding to children then calling handleUpdate.

inherited

view() → Object

Renders the widget to a string or View.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited