public class WidgetService extends Service implements BluetoothObserver {

    private BluetoothManager mBluetoothManager;

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        mBluetoothManager = BluetoothManager.getInstance(this);
        mBluetoothManager.addObserver(this);
        mBluetoothManager.enableBluetooth();

        String command = intent.getStringExtra("command");
        if (command.equals("close")) {
            closeDoor();
        } else if (command.equals("open")) {
            openDoor();
        } else {
            Toast.makeText(this, "Поступила неизвестная команда...", Toast.LENGTH_SHORT).show();
        }

        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    public void closeDoor() {
        Toast.makeText(this, "Тут будем закрывать дверь...", Toast.LENGTH_SHORT).show();
        if (mBluetoothManager.getBluetooth().isConnected())
            mBluetoothManager.closeDoor();
        else
            MainActivity.start(this);
    }

    public void openDoor() {
        Toast.makeText(this, "А тут будем открывать дверь...", Toast.LENGTH_SHORT).show();
        if (mBluetoothManager.getBluetooth().isConnected())
            mBluetoothManager.openDoor();
        else
            MainActivity.start(this);
    }

    @Override
    public void handleEvent(Message message) {
        switch (message.what) {
            case Bluetooth.BT_ON:

                break;
        }
    }
}