Flutter Desktop Apps: Getting Started

Mar 28 2023 · Dart 2.19, Flutter 3.7, Android Studio 2021.3.1 or higher, Visual Studo Code 1.7.4 or higher

Part 1: Flutter Desktop Apps

10. Exporting Data

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Notes: 10. Exporting Data

See https://pub.dev/packages/filesystem_picker.

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Android Studio

Open up pubspec.yaml add add the following plugin:

file_picker: ^5.2.5

final path = await FilePicker.platform.getDirectoryPath();

// 1
if (path != null) {
  // 2
  final file = File('$path/exports.todo');
  // 3
  if (await file.exists()) {
    await file.delete();
  }
  // 4
  final repository = ref.read(repositoryProvider);
  final todoController = ref.read(todoControllerProvider);
  final todoLists = todoController.todoList;

  final jsonList = <TodoList>[];
  await Future.forEach(todoLists, (list) async {
    jsonList.add(await repository.fillTodoList(list));
  });
  await file.writeAsString(jsonEncode(jsonList));
}

Finder

On the Mac, open up the file and you can see the json the export command created.