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Description:

flutter download manager

Flutter Download Manager #

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Overview #
Flutter Download Manager is a Cross-Platform file downloader with Parallel and Batch Download support. Manage download tasks by url and be notified of status and their progress. Pause, Cancel, Queue and Resume Downloads.
This package was made as I felt like there are no download managers in flutter, specially with desktop support.

Features #

Manage download tasks by url
Ability to notified of status and progress changes
Partial Download Feature
Queue Downloads
Pause, Cancel or Resume Downloads
Parallel File Downloads (2 or can change)
Support Batch download

Platforms Supported #

Linux
MacOS
Windows
Android
iOS

There are a few caveats about this package:

On desktop it saves the file in absolute or relative path.
On mobile it saves the file in absolute or relative path, but we should ask/ensure if the app has the required permissions.
It does not run in a background process, so when the dart application closes the manager will also shut down.

Getting Started #
In your pubspec.yaml file add:
dependencies:
flutter_download_manager: any
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Then, in your code import:
import 'package:flutter_download_manager/flutter_download_manager.dart';
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Usage #
Please refer to /example folder for a working example.
Simply Download a file #
var dl = DownloadManager();
var url = "adasdad.com/asda.sdas";
dl.addDownload(url, "./test.sdas");

DownloadTask? task = dl.getDownload(url4);

task?.status.addListener(() {
print(task.status.value);
});

task?.progress.addListener(() {
print(task.progress.value);
});

await dl.whenDownloadComplete(url4);
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Get Download Status #
DownloadTask? task = dl.getDownload(url4);

task?.status.addListener(() {
print(task.status.value);
});
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Get Download Progress #
DownloadTask? task = dl.getDownload(url4);

task?.progress.addListener(() {
print(task.progress.value);
});
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Await for a task to be complete #
DownloadTask? task = dl.getDownload(url4);

await task.whenDownloadComplete();
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Cancel a task #
var dl = DownloadManager();

dl.cancelDownload(url5);
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Pause a task #
var dl = DownloadManager();

dl.pauseDownload(url5);
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Resume a task #
var dl = DownloadManager();

dl.resumeDownload(url5);
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Download in Batch #
var dl = DownloadManager();

var urls = <String>[];
urls.add(url2);
urls.add(url3);
urls.add(url);

dl.addDownload(url2, "./test2.ipa");
dl.addDownload(url3, "./test3.ipa");
dl.addDownload(url, "./test.ipa");

var downloadProgress = dl.getDownloadProgress(urls);

downloadProgress.addListener(() {
print(downloadProgress.value);
});

await dl.whenDownloadsComplete(urls);
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var dl = DownloadManager();

var urls = <String>[];
urls.add(url2);
urls.add(url3);
urls.add(url);

dl.addBatchDownloads(urls, "./");
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Cancel a Batch Download #
var dl = DownloadManager();

var urls = <String>[];
urls.add(url6);
urls.add(url5);
urls.add(url);

dl.cancelDownloads(urls);
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Get Batch Download Progress #
var dl = DownloadManager();

var urls = <String>[];
urls.add(url2);
urls.add(url3);

var downloadProgress = dl.getDownloadProgress(urls);

downloadProgress.addListener(() {
print(downloadProgress.value);
});
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Await for Batch Download to complete #
var dl = DownloadManager();

var urls = <String>[];
urls.add(url2);
urls.add(url3);
urls.add(url);

await dl.whenDownloadsComplete(urls);
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Future Work #
[] Add in Shared Preference to survive app shutdown
DownloadStatus #
enum DownloadStatus { queued, downloading, completed, failed, paused, canceled }