在android 9中关闭应用程序时不显示通知startForeground

Question

启动服务时，我会显示一条通知。 在Android 9以下是不错的选择。 但是在Android 9中，当我单击“主页”按钮时，该应用程序关闭后，通知将被取消。 这是我的代码

    @Override
public int onStartCommand(Intent intent, int flags, int startId) {//____________________________ Start onStartCommand

    SaveLog("onStart Service : " + getStringCurrentDate());

    if (alarmNotify == null) {
        Integer id = getApplicationContext().getResources().getInteger(R.integer.NotificationRun);
        NotificationManagerClass managerClass =
                new NotificationManagerClass(
                        getApplicationContext(),
                        getApplicationContext().getResources().getString(R.string.ServiceRun)
                        , true
                        , 3
                );
        alarmNotify = managerClass.getNotification();

        startForeground(id, alarmNotify);
    }


    Calendar now = Calendar.getInstance();
    Intent intent1 = new Intent(getApplicationContext(), ReceiverJobInBackground.class);
    PendingIntent pendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0, intent1, PendingIntent.FLAG_UPDATE_CURRENT);
    AlarmManager am = (AlarmManager) getApplicationContext().getSystemService(getApplicationContext().ALARM_SERVICE);
    am.setRepeating(AlarmManager.RTC_WAKEUP, now.getTimeInMillis(), 60 * 1000, pendingIntent);

    return Service.START_STICKY;
}//_____________________________________________________________________________________________ End onStartCommand

alarmNotify是android.app.Notification

我设置了权限：

<uses-permission android:name="android.permission.FOREGROUND_SERVICE" />

这是我的频道：

NotificationChannel notificationChannel = new NotificationChannel(CHANNEL_ONE_ID,
            CHANNEL_ONE_NAME, notifManager.IMPORTANCE_HIGH);
    notificationChannel.enableLights(true);
    notificationChannel.setLightColor(context.getResources().getColor(R.color.colorPrimary));
    notificationChannel.setShowBadge(true);
    notificationChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
    getManager().createNotificationChannel(notificationChannel);

请帮助我。 坦克