UDownloadManager class - utilities library

Properties

active → List<UDownloadTask>: no setter
allTasks → List<UDownloadTask>: Every task, including silent ones.
no setter
config ↔ UDownloadConfig: getter/setter pair
events → Stream<UDownloadTask>: Emits a task whenever its status changes.
no setter
hashCode → int: The hash code for this object.
no setterinherited
hasListeners → bool: Whether any listeners are currently registered.
no setterinherited
headersProvider ↔ Future<Map<String, String>> Function(UDownloadTask task)?: Extra headers per attempt — e.g. a fresh bearer token. Called again after a 401/403.
getter/setter pair
maxConcurrent ← int: no getter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
speedLimit ← int: no getter
tasks → List<UDownloadTask>: Visible tasks, newest first.
no setter
totalSpeed → double: Sum of the speeds of every running task, in bytes per second.
no setter
urlResolver ↔ Future<String> Function(UDownloadTask task)?: Turns UDownloadRequest.sourceId into a URL, per attempt. Lets you download by id from an authenticated endpoint or a short-lived signed URL without the URL ever being persisted.
getter/setter pair

Methods

addListener(VoidCallback listener) → void: Register a closure to be called when the object changes.
inherited
cancel(String id) → Future<void>
clearCompleted() → Future<void>: Name kept from the media download manager.
clearFinished() → Future<void>
dispose() → void: Discards any resources used by the object.
override
download(String url, {UDownloadDestination destination = const UDownloadDestination.downloads(), String? fileName, Map<String, String> headers = const <String, String>{}, bool wifiOnly = false, int? connections, UChecksum? checksum}) → Future<UDownloadTask>: Convenience for the common case: download url to destination with default settings.
enqueue(UDownloadRequest request) → Future<UDownloadTask>
fetchBytes(String url, {Map<String, String> headers = const <String, String>{}, void onProgress(double progress)?, int connections = 1}) → Future<Uint8List>: Silent download into memory. Not listed, not persisted, not resumable across restarts.
fetchToStorage(String url, String key, {UStorageBucket bucket = UStorageBucket.support, Map<String, String> headers = const <String, String>{}, void onProgress(double progress)?, UChecksum? checksum, Duration? expireIn, bool persistent = true}) → Future<String>: Silent download into UFileStorage. Returns the key once the file is stored.
init({UDownloadConfig? config}) → Future<void>
load() → Future<void>: Name kept from the media download manager.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void: Call all the registered listeners.
inherited
open(UDownloadTask task) → Future<bool>
pause(String id) → Future<void>
pauseAll() → Future<void>
remove(String id, {bool deleteFile = false}) → Future<void>: Removes a task from the list; with deleteFile also deletes what it downloaded.
removeListener(VoidCallback listener) → void: Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
resume(String id) → Future<void>
resumeAll() → Future<void>
retry(String id) → Future<void>: Starts a finished or failed task over from byte zero.
reveal(UDownloadTask task) → Future<bool>
share(UDownloadTask task) → Future<void>
task(String id) → UDownloadTask?
toString() → String: A string representation of this object.
inherited

Operators

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

Static Properties

instance → UDownloadManager: final