user_utils.kt

object UserUtils {

fun queryContacts() {
      val listOfContact= mutableListOf<String>()
      listOfContacts.add("9500552211")
      listOfContacts.add("9500552212")
      listOfContacts.add("9500552213")
      listOfContacts.add("9500552214")
      listOfContacts.add("9500552215")
      listOfContacts.add("9500552216")
      listOfContacts.add("9500552217")
      listOfContacts.add("9500552218")
      listOfContacts.add("9500552219")
      listOfContacts.add("9500552210")
      listOfContacts.add("9500552221")

    val subLists: List<List<String>> = listOfContact.chunked(size = 10)
    ContactsQuery.totalQueryCount=subLists.size  
    val contactQuery= ContactsQuery()
    for(index in subLists.indices)
       contactQuery.makeQuery(index,ArrayList(subLists[index]), onQueryListener)
}

private val onQueryListener=object : QueryListener {
        override fun onCompleted(queriedList: ArrayList<UserProfile>) {
          //handle the result
        }

        override fun onStart(position: Int, contactBatch: ArrayList<String>) {
            Timber.v("onQueryStart pos: $position inputs: ${contactBatch.size}")
        }
    }
        


}