al_downloader

al_downloader

A URL-based flutter downloader that supports to download any type of file and automatically manages a lot of things.

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Features

• manage download tasks by url
• simple download status
• I/O infrequently
• provide convenient download handle
• support batch download
• manage automatically files without requiring to be specified a download path
• based on flutter_downloader

Integration

Native Config: same as flutter_downloader native config

add the following line to your pubspec.yaml

dependencies:
  al_downloader: ^1.8.4

run the following line with your command line

flutter packages get

import the following line, then you can use al_downloader

import 'package:al_downloader/al_downloader.dart';

Usage

ALDownloader

Initialize

ALDownloader.initialize();

Configure print

ALDownloader.configurePrint(true, frequentEnabled: false);

Download

ALDownloader.download(url,
    directoryPath: directoryPath,
    fileName: fileName,
    handlerInterface:
        ALDownloaderHandlerInterface(progressHandler: (progress) {
      debugPrint(
          'ALDownloader | download progress = $progress, url = $url\n');
    }, succeededHandler: () {
      debugPrint('ALDownloader | download succeeded, url = $url\n');
    }, failedHandler: () {
      debugPrint('ALDownloader | download failed, url = $url\n');
    }, pausedHandler: () {
      debugPrint('ALDownloader | download paused, url = $url\n');
    }));

Add a handler interface

ALDownloader.addHandlerInterface(
    ALDownloaderHandlerInterface(progressHandler: (progress) {
      debugPrint(
          'ALDownloader | download progress = $progress, url = $url\n');
    }, succeededHandler: () {
      debugPrint('ALDownloader | download succeeded, url = $url\n');
    }, failedHandler: () {
      debugPrint('ALDownloader | download failed, url = $url\n');
    }, pausedHandler: () {
      debugPrint('ALDownloader | download paused, url = $url\n');
    }),
    url);

Add a forever handler interface

ALDownloader.addForeverHandlerInterface(
    ALDownloaderHandlerInterface(progressHandler: (progress) {
      debugPrint(
          'ALDownloader | download progress = $progress, url = $url\n');
    }, succeededHandler: () {
      debugPrint('ALDownloader | download succeeded, url = $url\n');
    }, failedHandler: () {
      debugPrint('ALDownloader | download failed, url = $url\n');
    }, pausedHandler: () {
      debugPrint('ALDownloader | download paused, url = $url\n');
    }),
    url);

Remove handler interface

ALDownloader.removeHandlerInterfaceForUrl(url);

Pause download

/// Stop download, but the incomplete data will not be deleted.
ALDownloader.pause(url);

Cancel download

/// Stop download, and the incomplete data will be deleted.
ALDownloader.cancel(url);

Remove download

/// Remove download, and all the data will be deleted.
ALDownloader.remove(url);

Get download status

final status = await ALDownloader.getStatusForUrl(url);

Get download progress

final progress = await ALDownloader.getProgressForUrl(url);

Get task

final task = await ALDownloader.getTaskForUrl(url);

Get all tasks

final tasks = await ALDownloader.tasks;

ALDownloaderBatcher

Batch download

ALDownloaderBatcher.download(urls,
    handlerInterface:
        ALDownloaderHandlerInterface(progressHandler: (progress) {
      debugPrint('ALDownloader | batch | download progress = $progress\n');
    }, succeededHandler: () {
      debugPrint('ALDownloader | batch | download succeeded\n');
    }, failedHandler: () {
      debugPrint('ALDownloader | batch | download failed\n');
    }, pausedHandler: () {
      debugPrint('ALDownloader | batch | download paused\n');
    }));

Add a handler interface for batch

ALDownloaderBatcher.addHandlerInterface(
    ALDownloaderHandlerInterface(progressHandler: (progress) {
      debugPrint('ALDownloader | batch | download progress = $progress\n');
    }, succeededHandler: () {
      debugPrint('ALDownloader | batch | download succeeded\n');
    }, failedHandler: () {
      debugPrint('ALDownloader | batch | download failed\n');
    }, pausedHandler: () {
      debugPrint('ALDownloader | batch | download paused\n');
    }),
    urls);

Get download status for a set of urls

final status = await ALDownloaderBatcher.getStatusForUrls(urls);

Get tasks

final tasks = await ALDownloaderBatcher.getTasksForUrls(urls);

ALDownloaderFileManager - A manager that manages file by url

final physicalFilePath =
    await ALDownloaderFileManager.getPhysicalFilePathForUrl(url);
debugPrint(
    'ALDownloader | get physical file path for [url], url = $url, path = $physicalFilePath\n');

Note:

1. If the persistent file was removed by exceptional means, such as the cache folder being deleted by some business code, call [remove] and then call [download] to re-download for fixing the problem.

Key File Of Example

iOS

• main.dart
• AppDelegate.swift
• Info.plist

Android

• main.dart
• AndroidManifest.xml

Contributing

Welcome contribution!

Welcome to open issue or PR for any problem, suggestion and idea!

Maintainer: jackleemeta (jackleemeta@outlook.com)