I am creating a straight-forward foreground service with notification. The title is not showing even I am setting it with setContentTitle() function.
Here is my code for creating the channel:

 private fun createNextPrayerNotificationChannel(): NotificationChannel {
    return NotificationChannel(
        Unique.NAME_NEXT_PRAYER_CHANNEL,
        getString(R.string.next_prayer_channel),
        NotificationManager.IMPORTANCE_HIGH
    )
}

And here’s my code for creating notification:

 return NotificationCompat.Builder(this, Unique.NAME_NEXT_PRAYER_CHANNEL)
        .setOnlyAlertOnce(true)
        .setOngoing(true)
        .setPriority(NotificationCompat.PRIORITY_HIGH)
        .setStyle(NotificationCompat.BigTextStyle())
        .setSmallIcon(R.drawable.ic_notification)
        .setContentIntent(pendingIntent)
        .setCustomContentView(contentView)
        .setCustomBigContentView(contentView)
        .build()

Where the content view is custom.