ImageCacheManager mixin

Superclass constraints

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

dispose() → Future<void>
Closes the cache database
inherited
downloadFile(String url, {String? key, Map<String, String>? authHeaders, bool force = false}) → Future<FileInfo>
Download the file and add to cache
inherited
emptyCache() → Future<void>
Removes all files from the cache
inherited
getFile(String url, {String key, Map<String, String> headers}) → Stream<FileInfo>
Get the file from the cache and/or online, depending on availability and age. Downloaded form url, headers can be used for example for authentication. The files are returned as stream. First the cached file if available, when the cached file is too old the newly downloaded file is returned afterwards.
inherited
getFileFromCache(String key, {bool ignoreMemCache = false}) → Future<FileInfo?>
Get the file from the cache. Specify ignoreMemCache to force a re-read from the database
inherited
getFileFromMemory(String key) → Future<FileInfo?>
Returns the file from memory if it has already been fetched
inherited
getFileStream(String url, {String? key, Map<String, String>? headers, bool withProgress}) → Stream<FileResponse>
Get the file from the cache and/or online, depending on availability and age. Downloaded form url, headers can be used for example for authentication. The files are returned as stream. First the cached file if available, when the cached file is too old the newly downloaded file is returned afterwards.
inherited
getImageFile(String url, {String? key, Map<String, String>? headers, bool withProgress = false, int? maxHeight, int? maxWidth}) → Stream<FileResponse>
Returns a resized image file to fit within maxHeight and maxWidth. It tries to keep the aspect ratio. It stores the resized image by adding the size to the key or url. For example when resizing https://via.placeholder.com/150 to max width 100 and height 75 it will store it with cacheKey resized_w100_h75_https://via.placeholder.com/150.
getSingleFile(String url, {String key, Map<String, String> headers}) → Future<File>
Get the file from the cache and/or online, depending on availability and age. Downloaded form url, headers can be used for example for authentication. When a file is cached it is return directly, when it is too old the file is downloaded in the background. When a cached file is not available the newly downloaded file is returned.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
putFile(String url, Uint8List fileBytes, {String? key, String? eTag, Duration maxAge = const Duration(days: 30), String fileExtension = 'file'}) → Future<File>
Put a file in the cache. It is recommended to specify the eTag and the maxAge. When maxAge is passed and the eTag is not set the file will always be downloaded again. The fileExtension should be without a dot, for example "jpg". When cache info is available for the url that path is re-used. The returned File is saved on disk.
inherited
putFileStream(String url, Stream<List<int>> source, {String? key, String? eTag, Duration maxAge = const Duration(days: 30), String fileExtension = 'file'}) → Future<File>
Put a byte stream in the cache. When using an existing file you can use file.openRead(). It is recommended to specify the eTag and the maxAge. When maxAge is passed and the eTag is not set the file will always be downloaded again. The fileExtension should be without a dot, for example "jpg". When cache info is available for the url that path is re-used. The returned File is saved on disk.
inherited
removeFile(String key) → Future<void>
Remove a file from the cache
inherited
toString() → String
A string representation of this object.
inherited

Operators

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