通知不会播放声音或振动

Question

我创建了一个函数来显示应用程序中任何位置的通知。它可以正常工作，但是即使我专门为其编写代码，这些通知也不会使我们颤抖。我尚未在较旧的手机上对其进行测试，但肯定无法在Android 9上运行。这是我的代码：

fun displayLocalNotif(
        context: Context,
        notifId: Int,
        tapOpenActivityClass: Class<*>,
        channelName: String,
        notifTitle: String,
        notifText: String
    ) {
        val notificationManager =
            context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
        val channelId = channelName.toLowerCase(Locale.ROOT).replace(" ", "_")

        val intent = Intent(context, tapOpenActivityClass).apply {
            flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK
        }

        val pendingIntent: PendingIntent = PendingIntent.getActivity(context, 0, intent, 0)

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            val channel = NotificationChannel(
                channelId,
                channelName,
                NotificationManager.IMPORTANCE_DEFAULT
            )

            channel.lightColor = Color.WHITE
            channel.enableLights(true)
            val audioAttributes = AudioAttributes.Builder()
                .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
                .setUsage(AudioAttributes.USAGE_NOTIFICATION)
                .build()
            channel.setSound(Settings.System.DEFAULT_NOTIFICATION_URI, audioAttributes)

            channel.enableVibration(true)
            channel.setShowBadge(true)

            notificationManager.createNotificationChannel(channel)
        }

        val builder = NotificationCompat.Builder(context, channelId)
            .setSmallIcon(R.drawable.ic_launcher_foreground)
            .setContentTitle(notifTitle)
            .setContentText(notifText)
            .setPriority(NotificationCompat.PRIORITY_HIGH)
            .setSound(Settings.System.DEFAULT_NOTIFICATION_URI)
            .setVibrate(longArrayOf(1000, 1000))
            .setContentIntent(pendingIntent)
            .setAutoCancel(true)

        with(NotificationManagerCompat.from(context)) {
            notify(notifId, builder.build())
        }
    }

我希望这些通知能够发出默认的通知声音，振动并默认显示在锁定屏幕上。我该怎么办？