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, BoxFit? fit, 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
- fit → BoxFit?
-
Optional image fit
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