Retrieve display profiles using UID on a FirestoreRecycler Adapter using Kotlin? - kotlin

Question

I am having difficulties retrieving the information correctly from Firebase Firestore for my Recycler Adapter. I am not sure what I might be doing wrong but I used a Document Reference to get the required field but now it seems to just copy the same thing over and over, I want it to display each created users profile and display it on my RecyclerAdapter but am not sure what I should do and have tried different methods but get a
"No setter/field error" on my Model Class "Users".
This is my Firebase Schema
This is what it is outputting
This is what I have my code as so far
[Update]
This is what I have imported
import Models.User
import android.content.Intent
import android.content.res.Configuration
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import android.view.LayoutInflater
import android.view.MenuItem
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import android.widget.Toast
import androidx.appcompat.app.ActionBarDrawerToggle
import androidx.appcompat.widget.Toolbar
import androidx.core.view.GravityCompat
import androidx.drawerlayout.widget.DrawerLayout
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.firebase.ui.firestore.FirestoreRecyclerAdapter
import com.firebase.ui.firestore.FirestoreRecyclerOptions
import com.google.android.material.navigation.NavigationView
import com.google.firebase.auth.FirebaseAuth
import com.google.firebase.firestore.*
import com.squareup.picasso.Picasso
import de.hdodenhof.circleimageview.CircleImageView
import kotlinx.android.synthetic.main.all_nearby_users.*
import kotlinx.android.synthetic.main.toolbar_layout.*
Oncreate
auth = FirebaseAuth.getInstance()
val customUserId = auth.currentUser!!.uid
val db = FirebaseFirestore.getInstance()
val userRef = db.collection("sUsers").document(customUserId)
val userQuery = db.collection("sUsers").orderBy("Full Name", Query.Direction.DESCENDING).limit(10)
//User List Layout
all_users_nearby_list.layoutManager = LinearLayoutManager(this)
//Firestore
val firestoreRecyclerOptions: FirestoreRecyclerOptions<Users> = FirestoreRecyclerOptions.Builder<Users>()
.setQuery(userQuery, Users::class.java)
.build()
adapter = UserFirestoreRecyclerAdapter(firestoreRecyclerOptions)
all_users_nearby_list.adapter = adapter
Firestore Recycler Adapter
private inner class UserFirestoreRecyclerAdapter internal constructor
(firestoreRecyclerOptions: FirestoreRecyclerOptions<Users>): FirestoreRecyclerAdapter<Users, UserViewHolder>(firestoreRecyclerOptions) {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): UserViewHolder {
val userView = LayoutInflater.from(parent.context)
.inflate(R.layout.display_users_profile, parent, false)
return UserViewHolder(userView)
}
override fun onBindViewHolder(holder: UserViewHolder, position: Int, model: Users) {
holder.setFullname(model.fullname)
holder.setProfileimage(model.profileImage)
}
}
UserViewHolder
private inner class UserViewHolder internal constructor (private val pView: View) : RecyclerView.ViewHolder(pView) {
internal fun setFullname(fullname: String) {
val username = pView.findViewById<TextView>(R.id.usernameTextView)
val db = FirebaseFirestore.getInstance()
val docRef = db.collection("sUsers").document(auth.currentUser!!.uid)
docRef.get()
.addOnSuccessListener { document ->
if (document != null) {
Log.d("HomeActivity", "DocumentSnapshot data: ${document.data}")
username.text = document.getString("Full Name")
} else {
Log.d("HomeActivity", "No such document")
}
}
.addOnFailureListener { exception ->
Log.d("HomeActivity", "get failed with ", exception)
}
username.text = fullname
Log.d("HomeActivity", "Current Data: " + fullname)
}
internal fun setProfileimage(profileImage: String) {
val userProfileImage = pView.findViewById<CircleImageView>(R.id.profileUserImage)
Picasso.get().load(profileImage).into(userProfileImage)
}
}
Model Class
package Models
class Users(
var fullname: String= "",
var profileImage: String= "",
var uid: String? = "",
var haircut: Boolean? = null,
var waxing: Boolean? = null,
var nails: Boolean? = null,
var profileRatingBar: Float? = 1.0f
)
My onStart and onStop
override fun onStart() {
super.onStart()
adapter!!.startListening()
}
override fun onStop() {
super.onStop()
if (adapter != null) {
adapter!!.stopListening()
}
}

Answer 1

This is how I would write your RecyclerView. Key points:
Don't make a 2nd FireStore query inside the ViewHolder
Your Firestore schema must exactly match your model
Use lifecycle owner instead of onStart/onStop
Firebase UI doesn't capture the uid; so do this manually (see apply)
ViewHolder must "hold" the views as fields (to avoid calling find every time)
Model represents 1 object, so I name it "User" not "Users"
Set layoutManager in XML to reduce boilerplate in onCreate
Layout XML
<androidx.recyclerview.widget.RecyclerView
...
app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
tools:itemCount="5"
tools:listitem="#layout/display_users_profile"
... />
Activity onCreate
val query = FirebaseFirestore.getInstance()
.collection("sUsers") // Why not "users" ?
.orderBy("fullname", Query.Direction.DESCENDING)
.limit(10)
val options = FirestoreRecyclerOptions.Builder<User>()
.setLifeCycleOwner(this)
.setQuery(query) { it.toObject(User::class.java)!!.apply { uid = it.id } }
.build()
all_users_nearby_list.adapter = UserFirestoreRecyclerAdapter(options)
Adapter
internal class UserFirestoreRecyclerAdapter(options: FirestoreRecyclerOptions<User>) :
FirestoreRecyclerAdapter<User, UserViewHolder>(options) {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int) =
LayoutInflater.from(parent.context)
.inflate(R.layout.display_users_profile, parent, false)
.let { UserViewHolder(it) }
override fun onBindViewHolder(holder: UserViewHolder, position: Int, model: Users) =
holder.bind(model)
}
ViewHolder
internal class UserViewHolder(itemView: View) :
RecyclerView.ViewHolder(itemView) {
// Hold view refs
private val usernameTextView: TextView = itemView.userNameTextView
private val profileUserImage: ImageView = itemView.profileUserImage
internal fun bind(model: User) {
model.apply {
usernameTextView.text = fullname
Picasso.get().load(profileImage).into(profileUserImage)
}
}
}
Model
// Set sensible defaults here (or null if no sensible default)
data class User(
var uid: String = "",
var fullname: String= "",
var profileImage: String= "",
var haircut: Boolean = false,
var waxing: Boolean = false,
var nails: Boolean = false,
var profileRatingBar: Float? = null
)