从db

Question

我正在尝试使用有关启动新事件的通知创建Android应用程序，待办事项列表。为节目通知创建服务，但它不起作用。服务启动但通知未显示。请帮忙。（从数据库获取数据正在运行）。 在onStartCommand中调用的方法

void timeToDoSomething() {
    new Thread(new Runnable() {
        @Override
        public void run() {
            Realm readData = Realm.getDefaultInstance();
            EventDTO eventsDTO;
            while (true) {
                Notification.Builder builder = new Notification.Builder(getApplicationContext());

                Intent intent = new Intent(getApplicationContext(), MainMenuActivity.class);
                PendingIntent pendingIntent = PendingIntent.getActivity(getApplicationContext(),
                        0, intent, PendingIntent.FLAG_CANCEL_CURRENT);

                GregorianCalendar gregorianCalendar = new GregorianCalendar();
                String date = String.valueOf(gregorianCalendar.get(Calendar.DATE))
                        + "-" + String.valueOf(gregorianCalendar.get(Calendar.MONTH) + 1)
                        + "-" + String.valueOf(gregorianCalendar.get(Calendar.YEAR));
                GregorianCalendar.getInstance();
                SimpleDateFormat formating = new SimpleDateFormat("HH:mm");
                eventsDTO = readData.where(EventDTO.class).equalTo("date", date)
                        .and().equalTo("timeStart", formating.format(gregorianCalendar.getTime())).findFirst();

                if(eventsDTO!=null) {
                    builder.setContentIntent(pendingIntent)
                            .setSmallIcon(R.drawable.main_logo)
                            .setLargeIcon(BitmapFactory.decodeResource(getApplication().getResources(), R.drawable.main_logo))
                            .setTicker("Time to do something")
                            .setWhen(System.currentTimeMillis())
                            .setAutoCancel(true)
                            .setContentTitle("Time Manager Remember")
                            .setContentText(eventsDTO.getName());

                    Notification notification = builder.build();
                    nm.notify(NOTIF_ID, notification);
                }
                try {
                    TimeUnit.SECONDS.sleep(60);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }).start();
}