如何将计时器插入RemoteViews？

Question

我正在创建一个应用程序，我需要在通知上显示计时器。我不知道应该怎么做。我尝试了一些方法，但我做不到。请参阅以下通知代码：

public NotificationCompat.Builder createNotification(Context context, String text) {
    Intent intent = new Intent(this, MapsActivity.class);

    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent,   PendingIntent.FLAG_UPDATE_CURRENT);
    final RemoteViews removeWidget = new RemoteViews(context.getPackageName(), R.layout.custom_notification);
    removeWidget.setOnClickPendingIntent(R.id.title, pendingIntent);


    NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
    boolean running = true;


    builder = new NotificationCompat.Builder(context)
            .setContentText(text)
            .setContentTitle("titulo")
            .setSmallIcon(R.drawable.ic_today_black_24dp)
            .setAutoCancel(true)
            .setOnlyAlertOnce(true)
            .setOngoing(running)
            .setContentIntent(
                    PendingIntent.getActivity(context, 10,
                            new Intent(context, MapsActivity.class)
                                    .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP),
                            0)
            );
    builder.setCustomContentView(removeWidget);

    notificationManager.notify(0, builder.build());

    return builder;
}

如何将计时器（计时器）插入RemoteViews？