Android应用后台24/7通知侦听器从api级别16到api级别28的运行与实现

我正在尝试实现一个长期运行的android服务,不管应用程序是否在运行,它都会一直运行。Bu当我在Android pie verson中关闭应用程序时,此服务将被终止

以下是我的服务代码:

 public class LocationNotificator extends Service {
        private static int FOREGROUND_ID = 1338;

        public LocationNotificator() {
        }

        public int onStartCommand(Intent intent, int flags, int startId) {
            Log.d("Location checker", "Service running");
    //My code is here
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
                startMyOwnForeground();
            else
                startForeground(FOREGROUND_ID,
                        buildForegroundNotification("abc"));
            stopForeground(true);
            return START_STICKY;
        }

        @Override
        public IBinder onBind(Intent intent) {
            // TODO: Return the communication channel to the service.
            throw new UnsupportedOperationException("Not yet implemented");
        }

        private Notification buildForegroundNotification(String filename) {
            NotificationCompat.Builder b = new NotificationCompat.Builder(this);

            b.setOngoing(true);

            b.setContentTitle("Some Title")
                    .setContentText("some File name")
                    .setSmallIcon(android.R.drawable.stat_sys_download)
                    .setTicker("downloading");

            return (b.build());
        }

        @RequiresApi(api = Build.VERSION_CODES.O)
        private void startMyOwnForeground() {
            String NOTIFICATION_CHANNEL_ID = "com.example.simpleapp";
            String channelName = "My Background Service";
            NotificationChannel chan = new NotificationChannel(NOTIFICATION_CHANNEL_ID, channelName, NotificationManager.IMPORTANCE_NONE);
            chan.setLightColor(Color.BLUE);
            chan.setLockscreenVisibility(Notification.VISIBILITY_PRIVATE);
            NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            assert manager != null;
            manager.createNotificationChannel(chan);

            NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID);
            Notification notification = notificationBuilder.setOngoing(true)
                    .setSmallIcon(R.mipmap.talentify_logo_red)
                    .setContentTitle("App is running in background")
                    .setPriority(NotificationManager.IMPORTANCE_MIN)
                    .setCategory(Notification.CATEGORY_SERVICE)
                    .build();
            startForeground(2, notification);
        }
    }

我希望这项服务能长期运行我应该如何使这项服务长期运行