GlassAlert class Modals

iOS 26's alert, on glass.

kGlassAlertWidth wide and kGlassAlertRadius round, its title bold above a dimmer message and its actions below as capsules: two side by side, any other number stacked. It materializes with the route that shows it — blur first, tint last, the content fading in on top — and is lifted kGlassModalLift levels (GlassAbove), so glass bars under it show in its backdrop. Shown with showGlassDialog.

Note: The GlassHost has to be above the navigator. A glass surface is captured by the host above it, and a modal is built in the Overlay it is shown in — for a dialog or a sheet the navigator's, for a menu or a popover the nearest one. In a WidgetsApp or a MaterialApp that means builder: (context, child) => GlassHost(child: child!). Built anywhere else the modal finds no host, and says so in debug rather than drawing glass that samples nothing.

showGlassDialog<void>(
  context: context,
  builder: (BuildContext context) => GlassAlert(
    title: const Text('Turn on notifications?'),
    message: const Text('You can change this later in Settings.'),
    actions: <GlassAlertAction>[
      GlassAlertAction(label: 'Not now', onPressed: () => Navigator.pop(context)),
      GlassAlertAction(label: 'Allow', isDefault: true, onPressed: () => Navigator.pop(context)),
    ],
  ),
);

See also:

Inheritance

Constructors

GlassAlert({required Widget title, Widget? message, List<GlassAlertAction> actions = const <GlassAlertAction>[], GlassFinish? finish, Key? key})
An alert headed by title.
const

Properties

actions → List<GlassAlertAction>
The buttons, in order: two share a row, any other number stack. Empty leaves the alert without buttons, to be closed some other way.
final
finish → GlassFinish?
The optics. Null takes the theme's.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
message → Widget?
The text under title, at 15 pt in the label colour at 60%. Null leaves it out.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
title → Widget
The heading, at 17 pt semibold in the label colour the theme chose for the glass. Usually a Text.
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.
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, int wrapWidth = 65}) → 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