Media | Player in the notification area

Well, I'm making a app that has a MediaPlayer plugin to play web radio .

I would like to add, when player was clicked, a preview of it in the notifications area (I think that's the name) as well as below:

InthisimageIfound,whatIwantisthat,intheplacewhere"Leve Garoa, São Paulo" is written, put the Radio player just below, when I, there in the App , click play .

The Gospel Mix app also does this.

The idea is that when App is minimized, the user has the experience of viewing the plugin when displaying the notification area .

But player did not appear in the notification area .

Follow the code .

@RequiresApi(api = Build.VERSION_CODES.JELLY_BEAN)
private void notificacao (){

    RemoteViews remoteViews = new RemoteViews(this.getPackageName(), R.layout.player);

    NotificationCompat.Builder mBuilder =
            new NotificationCompat.Builder(this)
                    .setSmallIcon(R.drawable.home)
                    .setContentTitle("Rádio Capital")
                    //.setCustomContentView(remoteViews)
                    .setContentText("Agora deu");

    Intent resultIntent = new Intent(this, player.class);
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    stackBuilder.addParentStack(player.class);
    stackBuilder.addNextIntent(resultIntent);
    PendingIntent resultPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
    mBuilder.setContentIntent(resultPendingIntent);
    mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    mNotificationManager.notify(1, mBuilder.build());

}