如何在android studio Kotlin中添加多个闹钟？

Question

** 我正在尝试向我的应用程序添加警报以触发通知，问题是，每当我添加新警报时，前一个警报都不起作用。我想是因为request code passed（所有的alarm都有相同的code(0)），但是不知道怎么每次都传一个新的request code。 **

这是我的 setAlarm() 函数：

    private fun setAlarm() {
        alarmManager = getSystemService(ALARM_SERVICE) as AlarmManager
        val intent = Intent(this, AlarmReceiver::class.java)
        pendingIntent = PendingIntent.getBroadcast(this, 0, intent, 0)

        alarmManager.setRepeating(
            AlarmManager.RTC_WAKEUP,
            calender.timeInMillis,
            AlarmManager.INTERVAL_DAY,
            pendingIntent
        )
        Toast.makeText(this, "alarm set", Toast.LENGTH_SHORT).show()

    }

这是我的警报接收器类：

    private lateinit var pendingIntent: PendingIntent
    override fun onReceive(p0: Context?, p1: Intent?) {

        val intent = Intent(p0, MainActivity::class.java)
        p1!!.flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
        pendingIntent = PendingIntent.getActivity(p0, 0, intent, 0)

        val builder = NotificationCompat.Builder(p0!!, "androidAlarm")
            .setSmallIcon(drawable.notification_bg)
            .setContentTitle("Your reminder!")
            .setContentText("Your work has to be done now!")
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setDefaults(NotificationCompat.DEFAULT_ALL)
            .setContentIntent(pendingIntent)


        val notificationManager = NotificationManagerCompat.from(p0)
        if (ActivityCompat.checkSelfPermission(
                p0,
                Manifest.permission.POST_NOTIFICATIONS
            ) != PackageManager.PERMISSION_GRANTED
        ) {
            // TODO: Consider calling
            //    ActivityCompat#requestPermissions
            // here to request the missing permissions, and then overriding
            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
            //                                          int[] grantResults)
            // to handle the case where the user grants the permission. See the documentation
            // for ActivityCompat#requestPermissions for more details.
            return
        }
        notificationManager.notify(123, builder.build())
    }

}

**如果用户愿意，我也不知道如何重复警报。

***我尝试在请求代码参数中使用 System.currentTimeMillis()，但没有帮助。

我搜索了很多但没有找到多少。*****