Doubts with the remote control in the Android notification bar

Good, first I want to make a brief summary to put in situation. My app loads a Fragment , I instantiate an object from a clase that I created. This clase contains the attributes and methods necessary to play a radio in Streaming. In Fragment I make calls to objeto methods and it works correctly.

Also in Fragment instancio a clase called NotificationPanel , which happened the objeto of the radio. This clase has everything necessary or that I think, to be able to visualize in the notification bar a layout with the buttons of the remote control of the radio in Streaming.

The code is as follows:

public class NotificationPanel {

private Context parent;
private NotificationManager nManager;
private NotificationCompat.Builder nBuilder;
private RemoteViews remoteView;
private RadioOnline radio;

public NotificationPanel(Context parent, RadioOnline radio) {
    // TODO Auto-generated constructor stub
    this.parent = parent;
    this.radio = radio;
    nBuilder = new NotificationCompat.Builder(parent)
            .setContentTitle("Mi Radio")
            .setContentText("Radio Online activada")
            .setSmallIcon(R.mipmap.ic_launcher)
            .setOngoing(true);

    remoteView = new RemoteViews(parent.getPackageName(), R.layout.notification_layout);

    //set the button listeners
    setListeners(remoteView);
    nBuilder.setContent(remoteView);

    nManager = (NotificationManager) parent.getSystemService(Context.NOTIFICATION_SERVICE);
    nManager.notify(2, nBuilder.build());
}

public void setListeners(RemoteViews view){
    //listener icono
    Intent icon = new Intent(parent, NotificationReturnSlot.class);
    icon.putExtra("DO", "icon");
    PendingIntent btnIcon = PendingIntent.getActivity(parent, 0, icon, 0);
    view.setOnClickPendingIntent(R.id.imageButtonNbarLogo, btnIcon);
    //listener 1
    Intent play = new Intent(parent, NotificationReturnSlot.class);
    play.putExtra("DO", "play");
    PendingIntent btnPlay = PendingIntent.getActivity(parent, 0, play, 0);
    view.setOnClickPendingIntent(R.id.btnPlayNbar, btnPlay);

    //listener 2
    Intent stop = new Intent(parent, NotificationReturnSlot.class);
    stop.putExtra("DO", "stop");
    //stop.putExtra("DO2", radio);
    PendingIntent btnStop = PendingIntent.getActivity(parent, 1, stop, 0);
    view.setOnClickPendingIntent(R.id.btnStopNbar, btnStop);
}


/**
 * Método que cierra el NotificationBar
 */
public void notificationCancel() {
    nManager.cancel(2);
}
}

As can be seen, in the método setListener, a Intent is created for each button in the layout . These Intent are passed to the clase NotificationResultSlot. Which analyzes that Intent has been received and executes an action.

The code is as follows:

public class NotificationReturnSlot extends Activity {

private NotificationReturnSlot ctx;

@Override
protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    ctx = this;
    String action = (String) getIntent().getExtras().get("DO");
    if (action.equals("play")) {
        Log.i("NotificationReturnSlot", "play");
    } else if (action.equals("stop")) {
        Toast.makeText(this, "Botón stop pulsado", Toast.LENGTH_LONG).show();
        Log.i("NotificationReturnSlot", "stopNotification");
    }
    finish();
}
}

The two problems I have are the following:

First, I do not know if this works, since I have a Toast in the action of the Stop button, and it does not show when I click it.

The second thing is that I do not see how to pass the radio object, by the Intent, because if I pass it stop.putExtra("DO2", radio); It tells me that I have to do Cast a Parceable or Seralizable , because when I do it and I execute it with any of the two Cast , it tells me that the object can not be converted.

What can I do to solve this? Could it be that I am posing badly how to program for android?

I hope I have been concise and have explained to me well what the problem is. Thank you very much in advance.