try {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                String NOTIFICATION_CHANNEL_ID = "com.app..";
                String channelName = "App Background Service";
                NotificationChannel channel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
                channel.setLightColor(Color.BLUE);
                channel.setLockscreenVisibility(Notification.VISIBILITY_SECRET);
                NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
                assert manager != null;
                manager.createNotificationChannel(channel);

                NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
                Notification notification = notificationBuilder.setOngoing(true)
                        .setSmallIcon(R.drawable.icon)
                        .setContentTitle("App is running in background")
                        .setPriority(NotificationManager.IMPORTANCE_MIN)
                        .setCategory(Notification.CATEGORY_SERVICE)
                        .build();
                startForeground(0, notification);
            } else
            {
                startForeground(0, new Notification());
            }
        }
        catch(Exception e)
        {
            e.printStackTrace();
        }

原因：context.startForegroundService（）随后没有调用service.startForeground（）

我希望服务不显示任何通知给用户和完成它的任务，而不会被杀死。在构建版本>26中，这可能吗？