MemoryImage class Null safety

Decodes the given Uint8List buffer as an image, associating it with the given scale.

The provided bytes buffer should not be changed after it is provided to a MemoryImage. To provide an ImageStream that represents an image that changes over time, consider creating a new subclass of ImageProvider whose load method returns a subclass of ImageStreamCompleter that can handle providing multiple images.

See also:

Inheritance
Annotations

Constructors

MemoryImage(Uint8List bytes, {double scale = 1.0})
Creates an object that decodes a Uint8List buffer as an image.
const

Properties

bytes → Uint8List
The bytes to decode into an image.
final
hashCode → int
The hash code for this object.
read-onlyoverride
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
scale → double
The scale to place in the ImageInfo object of the image.
final

Methods

createStream(ImageConfiguration configuration) → ImageStream
Called by resolve to create the ImageStream it returns.
protected">@protectedinherited
evict({ImageCache? cache, ImageConfiguration configuration = ImageConfiguration.empty}) → Future<bool>
Evicts an entry from the image cache.
inherited
load(MemoryImage key, DecoderCallback decode) → ImageStreamCompleter
Converts a key into an ImageStreamCompleter, and begins fetching the image.
override
loadBuffer(MemoryImage key, DecoderBufferCallback decode) → ImageStreamCompleter
Converts a key into an ImageStreamCompleter, and begins fetching the image.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
obtainCacheStatus({required ImageConfiguration configuration, ImageErrorListener? handleError}) → Future<ImageCacheStatus?>
Returns the cache location for the key that this ImageProvider creates.
inherited
obtainKey(ImageConfiguration configuration) → Future<MemoryImage>
Converts an ImageProvider's settings plus an ImageConfiguration to a key that describes the precise image to load.
override
resolve(ImageConfiguration configuration) → ImageStream
Resolves this image provider using the given configuration, returning an ImageStream.
nonVirtual">@nonVirtualinherited
resolveStreamForKey(ImageConfiguration configuration, ImageStream stream, MemoryImage key, ImageErrorListener handleError) → void
Called by resolve with the key returned by obtainKey.
protected">@protectedinherited
toString() → String
A string representation of this object.
override

Operators

operator ==(Object other) → bool
The equality operator.
override