Kotlin searchView does not reload Firebase array - firebase

Question

I have one activity with 2 recyclerViews, both recyclers are used with Firebase. One of the recyclers displays the results of a query, the other recycler has a listener that updates every time there is an update in Firebase. I added a searchView to filter the results from Firebase. The issue I'm having is when I'm trying to search the results from the Firebase query, when I start typing I see results but when I click the X to stop searching, the adapter does not reload the array and i don't see the list of items unless I reload the activity. I'm not sure what I'm missing here. Any help/suggestion is greatly appreciated. Here is my code:
Adapter
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.Filter
import android.widget.Filterable
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.eduardoz.ezmdapp.Model.Charges
import com.eduardoz.ezmdapp.R
class ChargesAdapter (private var charges: ArrayList<Charges>
, private var chargesAll: ArrayList<Charges>
, private val itemClick: (Charges) -> Unit)
: RecyclerView.Adapter<ChargesAdapter.ViewHolder>()
, Filterable {
inner class ViewHolder(itemView: View, val itemClick: (Charges) -> Unit) :
RecyclerView.ViewHolder(itemView) {
private val chargeCode = itemView.findViewById<TextView>(R.id.chargeCodeTxt)
private val chargeDescription = itemView.findViewById<TextView>(R.id.chargeDescriptionTxt)
fun bindCharges(charges: Charges) {
chargeCode?.text = charges.chargeCode
chargeDescription?.text = charges.chargeDescription
itemView.setOnClickListener { itemClick(charges) }
}
}
init {
this.charges = charges
chargesAll = java.util.ArrayList(charges)
}
override fun getItemCount(): Int {
return charges.count()
}
override fun onBindViewHolder(holder: ChargesAdapter.ViewHolder, position: Int) {
holder.bindCharges(charges[position])
}
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ChargesAdapter.ViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.charges_list, parent, false)
return ViewHolder(view, itemClick)
}
override fun getFilter(): Filter {
return searchFilter
}
private val searchFilter: Filter = object: Filter() {
override fun performFiltering(constraint: CharSequence?): FilterResults {
val filteredList: ArrayList<Charges> = ArrayList()
if (constraint!!.isEmpty()) {
filteredList.addAll(chargesAll)
} else {
for(item in chargesAll) {
if
(item.chargeDescription.toLowerCase().contains(constraint.toString().toLowerCase())) {
filteredList.add(item)
}
}
}
val searchResults = FilterResults()
searchResults.values = filteredList
return searchResults
}
override fun publishResults(constraint: CharSequence?, results: FilterResults?) {
charges.clear()
charges.addAll(results!!.values as Collection<Charges>)
notifyDataSetChanged()
}
}
}
Activity
descriptionSearch.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
override fun onQueryTextSubmit(query: String): Boolean {
return false
}
override fun onQueryTextChange(newText: String): Boolean {
if (newText.isNotEmpty()) {
searchViewBar(newText)
} else {
if (newText.isEmpty()) { //I ADDED THIS TO RELOAD THE ADAPTER
charges.clear()
chargeList()
}
}
return false
}
})
private fun searchViewBar(newText: String) {
chargesListener = chargesCollectionRef
.whereGreaterThanOrEqualTo(CHARGE_DESCRIPTION, newText)
.whereLessThanOrEqualTo(CHARGE_DESCRIPTION, newText+"z")
.addSnapshotListener(this) { snapshot, exception ->
if (exception != null) {
println("error")
}
if (snapshot != null) {
charges.clear()
parseData(snapshot)
}
}
}
fun parseData(snapshot: QuerySnapshot) {
for (document in snapshot.documents) {
val data = document.data
val chargeCode = data!![CHARGE_CODE] as String
val chargeDescription = data[CHARGE_DESCRIPTION] as String
val chargeSpecialty = data[CHARGE_SPECIALTY] as String
val newChargeList = Charges(chargeCode, chargeDescription, chargeSpecialty)
charges.add(newChargeList)
}
chargesFromAdapter.notifyDataSetChanged()
}