Programas y Aplicaciones: Nueva notificación en Android

NotificationCompat.Builder mBuilder =
        new NotificationCompat.Builder(Main.this)
                .setSmallIcon(android.R.drawable.stat_sys_warning)
                .setLargeIcon((((BitmapDrawable)getResources()
                        .getDrawable(R.mipmap.ic_launcher)).getBitmap()))
                .setContentTitle("Mensaje")
                .setContentText("Nuevo Mensaje")
                .setContentInfo("1")
                .setTicker("Alerta!");

Intent notIntent =
        new Intent(Main.this, Main.class);

PendingIntent contIntent =
        PendingIntent.getActivity(
                Main.this, 0, notIntent, 0);

mBuilder.setContentIntent(contIntent);


NotificationManager mNotificationManager =
        (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

mNotificationManager.notify(1, mBuilder.build());