ModalBarrier class Null safety

A widget that prevents the user from interacting with widgets behind itself.

The modal barrier is the scrim that is rendered behind each route, which generally prevents the user from interacting with the route below the current route, and normally partially obscures such routes.

For example, when a dialog is on the screen, the page below the dialog is usually darkened by the modal barrier.

See also:

Inheritance

Constructors

ModalBarrier({Key? key, Color? color, bool dismissible = true, VoidCallback? onDismiss, String? semanticsLabel, bool? barrierSemanticsDismissible = true})
Creates a widget that blocks user interaction.
const

Properties

barrierSemanticsDismissible → bool?
Whether the modal barrier semantics are included in the semantics tree.
final
color → Color?
If non-null, fill the barrier with this color.
final
dismissible → bool
Specifies if the barrier will be dismissed when the user taps on it.
final
hashCode → int
The hash code for this object.
nonVirtual">@nonVirtualread-onlyinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
onDismiss → VoidCallback?
Called when the barrier is being dismissed.
final
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
semanticsLabel → String?
Semantics label used for the barrier if it is dismissible.
final

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">@protectedinherited
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">@nonVirtualinherited