آموزش ایجاد سرویس در Flutter

MyThread myThread = new MyThread(); 
myThread.start();

public class MyThread extends Thread {
@Override
        public void run() {
            for (int i = 0; i < 1; i++) {
                try {
                    Thread.sleep(500);
                    Intent intent = new Intent();
                    intent.setAction(MY_ACTION);
intent.putExtra("DATAPASSED", i);
                    _currentValue = i;
sendBroadcast(intent);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
        }
        stopSelf();
    }
}

private class MyReceiver extends BroadcastReceiver {
  @Override
  public void onReceive(Context arg0, Intent arg1) {
                
   int datapassed = arg1.getIntExtra("DATAPASSED", 0);
   Toast.makeText(MainActivity.this,
              "Value from service !!\n"
                 + "Data passed: " + String.valueOf(datapassed),
        Toast.LENGTH_LONG).show();
  }
}

myReceiver = new MyReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(SimpleService.MY_ACTION);
registerReceiver(myReceiver, intentFilter);

if (myReceiver != null) {
    unregisterReceiver(myReceiver);
}

public class MainActivity extends FlutterActivity implements MethodChannel.MethodCallHandler

@Override
public void onMethodCall(MethodCall call, MethodChannel.Result result) {
try {
        if (call.method.equals("connect")) {
            connectToService();
            keepResult = result;
        } else if (serviceConnected) {
            if (call.method.equals("start")) {
                String _data = SimpleService.helloFromService();
                result.success(_data);
            }
       } else {
            result.error(null, "App not connected to service",      null);
        }
    } catch (Exception e) {
        result.error(null, e.getMessage(), null);
    }
}

private void connectToService() {
  if (!serviceConnected) {
Intent service = new Intent(this, SimpleService.class);
      startService(service);
      serviceConnected = true;
} else {
      if (keepResult != null) {
          keepResult.success(null);
          keepResult = null;
      }
  }
}

new MethodChannel(getFlutterView(), CHANNEL).setMethodCallHandler(this::onMethodCall);

static final String TAG = "Main Activity.....";
static final String CHANNEL = "com.example.services_demo/service";
MyReceiver myReceiver;
MethodChannel.Result keepResult = null;
boolean serviceConnected = false;

static const platform = MethodChannel('com.example.services_demo/service');

@override
void initState() {
  super.initState();
  connectToService();
}

Future<void> connectToService() async {
 try {
   await platform.invokeMethod<void>('connect');
   print('Connected to service');
 } on Exception catch (e) {
   print(e.toString());
 }
}

Future<String> getDataFromService() async {
  try {
    final result = await platform.invokeMethod<String>('start');
    return result;
  } on PlatformException catch (e) {
    print(e.toString());
  }
  return 'No Data From Service';
}