https://github.com/fluttervn/isolate_woker

Library help run flutter tasks in other isolate
https://github.com/fluttervn/isolate_woker

android background-thread background-worker backgroundtask flutter ios isolate

Last synced: about 1 month ago
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Library help run flutter tasks in other isolate

• Host: GitHub
• URL: https://github.com/fluttervn/isolate_woker
• Owner: fluttervn
• License: mit
• Created: 2019-08-01T07:02:09.000Z (about 5 years ago)
• Default Branch: master
• Last Pushed: 2020-01-02T04:56:31.000Z (over 4 years ago)
• Last Synced: 2024-07-09T04:38:12.515Z (2 months ago)
• Topics: android, background-thread, background-worker, backgroundtask, flutter, ios, isolate
• Language: Dart
• Size: 621 KB
• Stars: 54
• Watchers: 4
• Forks: 12
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# isolate_worker

[![Build Status](https://travis-ci.org/fluttervn/isolate_woker.svg?branch=master)](https://travis-ci.org/fluttervn/isolate_woker)

Library help run flutter tasks in other isolate. The library improve from original library: https://github.com/Dreckr/Worker

Improvement:

- Return callback progress for upload/download file

- Support cancel download/upload file

## Usage

Define class:

```dart

class DownloadTask implements FileTask> {

  final Dio dio;

  final String url;

  final String savePath;

  CancelToken cancelToken;

  DownloadTask(

      {@required this.dio, @required this.url, this.savePath, this.taskId});

  @override

  Future execute() {

    return _doExecute();

  }

  Future _doExecute() async {

    cancelToken = CancelToken();

    var completer = Completer();

    try {

      final response = await dio.download(url, savePath,

          cancelToken: cancelToken, onReceiveProgress: taskProgressCallback);

      print('DownloadTask success: $response');

      completer.complete(true);

    } catch (e) {

      print('DownloadTask error: $e');

      completer.completeError(e);

    }

    return completer.future;

  }

  @override

  ActionType actionType = ActionType.download;

  @override

  String taskId;

  @override

  var taskProgressCallback;

  @override

  void handleCancel(String taskId) {

    cancelToken?.cancel('Cancel download $taskId');

  }

}

```

Use:

```dart

Function(TransferProgress progress) progressCallback = (progress) {

      setState(() {

        percent = progress.count / progress.total;

      });

    };

    var saveFolder = await Utils.getDownloadDirectory('Demo/Download');

    final fullPath = '${saveFolder.path}/download.jpg';

    final urlPath = 'https://sample-videos.com/img/Sample-jpg-image-2mb.jpg';

    final dio = Dio();

    var downloadTask = DownloadTask(

        taskId: fullPath, dio: dio, url: urlPath, savePath: fullPath);

    final worker = Worker(poolSize: 1);

    await worker.handle(downloadTask, callback: progressCallback);

    setState(() {

      loading = false;

      imagePath = fullPath;

    });

```

Please refer to [my post on Medium](https://medium.com/fluttervn/run-your-code-in-background-easily-with-flutter-2e98d94f30de?source=friends_link&sk=2be1198ef7b5a5cb8191117e7339f536) for more details

## Authors

- [anlam87](https://github.com/anticafe) ([email protected])