public class MyHandler extends NotificationsHandler {
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
Context ctx;

@Override
public void onReceive(Context context, Bundle bundle) {
ctx = context;
String nhMessage = bundle.getString("message");
sendNotification(nhMessage);
if (MainActivity.isVisible) {
MainActivity.mainActivity.ToastNotify(nhMessage);
}
}

private void sendNotification(String msg) {

Intent intent = new Intent(ctx, MainActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

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

PendingIntent contentIntent = PendingIntent.getActivity(ctx, (int)(System.currentTimeMillis()/1000),
intent, PendingIntent.FLAG_ONE_SHOT);

NotificationCompat.BigTextStyle bigTextStyle = new NotificationCompat.BigTextStyle();
//bigTextStyle.setSummaryText("...");

Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder mBuilder =
new NotificationCompat.Builder(ctx)
.setSmallIcon(R.mipmap.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(ctx.getResources(), R.mipmap.ic_launcher))
//.setLargeIcon(R..ic_launcher)
.setContentTitle("Notification Hub Demo")
.setStyle(bigTextStyle
.bigText(msg))
.setSound(defaultSoundUri)
.setDefaults(Notification.FLAG_NO_CLEAR)
.setContentText(msg);

mBuilder.setContentIntent(contentIntent);
mNotificationManager.notify((int)(System.currentTimeMillis()/1000), mBuilder.build());
}