应用关闭时如何在后台检查领域变量？

Question

我有通知服务和BroadcastReciver，可以通过计时器通知用户。但是我需要检查领域中的一些变量，如果这些变量是正确的开始通知给用户

不起作用-Service and BroadcastReciver中的Init领域 无效-executeTransactionAsync（）和executeTransaction（）

class NotificationService: IntentService("MyNewIntentService") {
    override fun onHandleIntent(intent: Intent?) {

        val id = intent!!.extras!!.getString("notifId")
        var countCups = 0

        realm.executeTransactionAsync {
            val water = it.where(User::class.java).findFirst()!!.waterBalance
            water.forEach {
                if (it) {
                    countCups = countCups.plus(1)
                }
            }
        }


        when (id) {
            "101" -> {

                if (countCups < 3) {
                    NotificationHelper(applicationContext, id).creatNotivication(
                        "Пора выпить воды",
                        "Не забудьте отметить выпитый стаканчик в приложении"
                    )

                }
            }
            "102" -> {

                if (countCups < 5) {
                    NotificationHelper(applicationContext, id).creatNotivication(
                        "Пора выпить воды",
                        "Не забудьте отметить выпитый стаканчик в приложении"
                    )
                }
            }
            "103" -> {

                if (countCups < 8) {
                    NotificationHelper(applicationContext, id).creatNotivication(
                        "Пора выпить воды",
                        "Не забудьте отметить выпитый стаканчик в приложении"
                    )
                }
            }
        }
    }

}

class NotificationReceiver : BroadcastReceiver() {

    override fun onReceive(context: Context, intent: Intent) {
        val id = intent!!.extras!!.getString("notifId")
        val intent1 = Intent(context, NotificationService::class.java)
        intent1.putExtra("notifId", id)
        context.startService(intent1)
    }
}

MainActivity中的方法

fun startNotificationAlarm(ctx: Context) {
        val notificationIntent = Intent(ctx, NotificationReceiver::class.java)
        notificationIntent.putExtra("notifId", "101")

        val notificationIntent2 = Intent(ctx, NotificationReceiver::class.java)
        notificationIntent2.putExtra("notifId", "102")

        val notificationIntent3 = Intent(ctx, NotificationReceiver::class.java)
        notificationIntent3.putExtra("notifId", "103")

        val pendingIntent = PendingIntent.getBroadcast(ctx, 101, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT)
        val pendingIntent2 = PendingIntent.getBroadcast(ctx, 102, notificationIntent2, PendingIntent.FLAG_UPDATE_CURRENT)
        val pendingIntent3 = PendingIntent.getBroadcast(ctx, 103, notificationIntent3, PendingIntent.FLAG_UPDATE_CURRENT)

        //12
        val calendar = Calendar.getInstance()
        calendar.set(Calendar.HOUR_OF_DAY, 12)
        calendar.set(Calendar.MINUTE, 0)
        calendar.set(Calendar.SECOND, 0)

        //17
        val calendar2 = Calendar.getInstance()
        calendar2.set(Calendar.HOUR_OF_DAY, 17)
        calendar2.set(Calendar.MINUTE, 0)
        calendar2.set(Calendar.SECOND, 0)

        //21
        val calendar3 = Calendar.getInstance()
        calendar3.set(Calendar.HOUR_OF_DAY, 21)
        calendar3.set(Calendar.MINUTE,0)
        calendar3.set(Calendar.SECOND, 0)


        Log.v("Notification", "12:00 notification start")
        var alarmManager = ctx.getSystemService(Context.ALARM_SERVICE) as AlarmManager
        alarmManager.setRepeating(
            AlarmManager.RTC_WAKEUP, System.currentTimeMillis() + 20000,
            1 * 60 * 1000,
            pendingIntent
        )

        Log.v("Notification", "17:00 notification start")
        var alarmManager2 = ctx.getSystemService(Context.ALARM_SERVICE) as AlarmManager
        alarmManager2.setRepeating(
            AlarmManager.RTC_WAKEUP,
            System.currentTimeMillis() + 20000,
            1 * 60 * 1000,
            pendingIntent2
        )

        Log.v("Notification", "21:00 notification start")
        var alarmManager3 = ctx.getSystemService(Context.ALARM_SERVICE) as AlarmManager
        alarmManager3.setRepeating(
            AlarmManager.RTC_WAKEUP,
            System.currentTimeMillis() + 20000,
            1 * 60 * 1000,
            pendingIntent3
        )


    }