What ways can tasks be executed in the background in an application?

In Flutter, there are several approaches to perform background tasks:

1. Isolates — separate execution threads that do not block the main UI thread. They are suitable for heavy computations.

import 'dart:isolate';

void heavyTask(SendPort sendPort) {
  // Long operation
  int result = 0;
  for (int i = 0; i < 100000000; i++) {
    result += i;
  }
  sendPort.send(result);
}

void main() async {
  ReceivePort receivePort = ReceivePort();
  await Isolate.spawn(heavyTask, receivePort.sendPort);
  receivePort.listen((message) {
    print('Result: $message');
  });
}

2. Plugins for background tasks — such as workmanager or flutter_background_fetch, which allow tasks to run even when the app is not active.

3. Asynchronous operations using Future and async/await — for non-blocking calls, but they mainly run on the main thread, so they are not suitable for heavy computations.

4. Platform-specific solutions — for example, using Android WorkManager or iOS Background Tasks via platform channels.

The choice depends on the task: for heavy computations — Isolates; for periodic background tasks — specialized plugins.