CachedImageMemory class
A widget that displays an image from memory using a custom cache service. It supports optional builders for loading and error states, as well as image fade-in animation when the image is fetched asynchronously.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatelessWidget
- CachedImageMemory
Constructors
- CachedImageMemory({Key? key, required String url, required MemoryImageCacheService cacheService, double? height, double? width, Widget builder(BuildContext context, Uint8List data)?, WidgetBuilder? loadingBuilder, Widget errorBuilder(BuildContext context, Object error)?, void onReady(Uint8List data)?, void onError(Object error)?, Duration fadeDuration = const Duration(milliseconds: 300)})
-
const
Properties
- builder → Widget Function(BuildContext context, Uint8List data)?
-
Custom builder to render the image bytes manually (not used here directly).
final
- cacheService → MemoryImageCacheService
-
The custom cache service used to manage image fetching and decoding.
final
- errorBuilder → Widget Function(BuildContext context, Object error)?
-
Widget displayed if an error occurs.
final
- fadeDuration → Duration
-
Duration for the fade-in animation of the image.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- height → double?
-
Optional height of the image.
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- loadingBuilder → WidgetBuilder?
-
Widget displayed while loading the image.
final
- onError → void Function(Object error)?
-
Callback fired when an error occurs.
final
- onReady → void Function(Uint8List data)?
-
Callback fired when the image has been successfully loaded.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- url → String
-
The image URL to be fetched and cached.
final
- width → double?
-
Optional width of the image.
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