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Android Kotlin expanding textview in adapter causes unwanted expanding another textviews

I show a list of items using adapter and recyclerview. Each item shows only 4 lines of biography-textView. In order to see whole biography, user clicks 'expand' textView. My code functions but there is a problem because sometimes (somehow randomly) one 'expand' click (f.e. in item No 1) causes expanding 2-3 biography textView more in another items(f.e. items No 7 and 12). What is wrong with my code? How to check it/identify why items textView are extra expand?
Can anyone help?
class ShowMastersAdapter (
private val masterList: ArrayList<Master>,
private val itemListener: OnItemClickListener
) : RecyclerView.Adapter<ShowMastersAdapter.ShowMasterViewHolder>() {
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ShowMasterViewHolder {
val view = LayoutInflater.from(parent.context).inflate(R.layout.item_master, parent, false)
return ShowMasterViewHolder(view)
}
override fun onBindViewHolder(holder: ShowMasterViewHolder, position: Int) {
holder.bindData(position)
}
override fun getItemCount(): Int {
return masterList.size
}
inner class ShowMasterViewHolder(view: View) : RecyclerView.ViewHolder(view) {
fun bindData(position: Int) {
val masterBiography = itemView.findViewById<TextView>(R.id.item_master_biography)
val masterExpandBiography =itemView.findViewById<TextView>(R.id.item_master_expand_text)
masterBiography.text = masterList[position].biography
masterExpandBiography.setOnClickListener {
itemListener.onReadMoreTextClick(masterExpandBiography, masterBiography)
}
}
}
interface OnItemClickListener {
fun onReadMoreTextClick(expandText: TextView, biographyText: TextView)
}
}
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/layout_top_part">
<TextView
android:id="#+id/item_master_biography"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="#dimen/item_master_margin_start"
android:layout_marginEnd="#dimen/item_master_margin_end"
android:ellipsize="end"
android:maxLines="4"
android:text="unknown"
android:textSize="#dimen/font_main_size_item_master"
app:layout_constraintBottom_toTopOf="#+id/item_master_expand_text"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/item_master_biography_label" />
<TextView
android:id="#+id/item_master_expand_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:text="#string/it_master_expand_text"
android:textColor="#color/text_as_link"
android:textSize="16sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
class FragmentShowMasters() : Fragment(), ShowMastersAdapter.OnItemClickListener{
private var listOfMasters: ArrayList<Master> = ArrayList()
private lateinit var myRecycler: RecyclerView
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,savedInstanceState:Bundle?): View {
myView = inflater.inflate(R.layout.fragment_show_masters, container, false)
myRecycler = myView.findViewById(R.id.recycler_show_masters)
myRecycler.setHasFixedSize(true)
myRecycler.adapter = ShowMastersAdapter(listOfMasters, this, highlightSearchText)
myRecycler.adapter?.notifyDataSetChanged()
myRecycler.layoutManager = LinearLayoutManager(this.context)
return myView
}
override fun onReadMoreTextClick(expandText: TextView, biographyText: TextView) {
if (biographyText.maxLines == 4) {
biographyText.maxLines = Int.MAX_VALUE
expandText.text = getString(R.string.it_master_shrink_text)
} else {
biographyText.maxLines = 4
expandText.text = getString(R.string.it_master_expand_text)
}
}
}

RecyclerView Not showing Text

I am new to mobile development with kotlin and I am trying to add a new item to the recyclerview.
The item is added to the recycler view but the text is not visible. I don't get what it's wrong.
I am using Kotlin in Android Studio 4.2
The class AgentAttributes only contains two properties:val Name:String ,val Value:String
**activity_main.xml**
<EditText
android:id="#+id/etSearch"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:hint="No emp"
app:layout_constraintEnd_toStartOf="#+id/btnSearch"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/btnSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#android:string/search_go"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/rvAgentAttributes"
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/etSearch" />
**MainActivity.kt**
private lateinit var agentAttributesAdapter:AgentAttributesAdapter
private lateinit var binding: ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = ActivityMainBinding.inflate(layoutInflater)
val view = binding.root
setContentView(view)
//setContentView(R.layout.activity_main)
//constructor
agentAttributesAdapter = AgentAttributesAdapter(mutableListOf())
//Definition of Recycler view adapter
binding.rvAgentAttributes.adapter = agentAttributesAdapter
binding.rvAgentAttributes.layoutManager = LinearLayoutManager(this)
//THIS IS THE WAY THAT I AM TRYING TO ADD A NEW ITEM
val agentAttr = AgentAttributes("Nombre","JOEL ROMUALDO LOPEZ SALIDO")
agentAttributesAdapter.addAttributes(agentAttr)
**AgentAttributesAdapter**
class AgentViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): AgentViewHolder {
return AgentViewHolder(
LayoutInflater.from(parent.context).inflate(
R.layout.agent_details,
parent,
false
)
)
override fun onBindViewHolder(holder: AgentViewHolder, position: Int) {
val layoutInflater = LayoutInflater.from(holder.itemView.context)
binding = AgentDetailsBinding.inflate(layoutInflater)
//val view = binding.root
val currentAgent = agent_attributes[position]
holder.itemView.apply {
binding.tvAttribute.text = currentAgent.Name.toString()
}
}
override fun getItemCount(): Int {
return agent_attributes.size
}
fun addAttributes(attr:AgentAttributes){
agent_attributes.add(attr)
notifyItemInserted(agent_attributes.size - 1)
}

There's no need to inflate your layout in the "binding" step:
override fun onBindViewHolder(viewHolder: ChoicesViewHolder, pos: Int) {
AgentDetailsBinding.bind(viewHolder.itemView).apply {
val currentAgent = agent_attributes[position]
tvAttribute.text = currentAgent.Name.toString()
}
}
PS: variables should be lower case, so currentAgent should have a name, no Name

Android recyclerView problem - multi-layer scrolling content?

I am brand new in Android/kotlin development. I created my very first app with a recyclerView to display the folders and files of the phone. I put the recyclerView into a segment, created my data structure and adapter. Assembled together. It works - or seems to work. But the problem is that when I try to scroll the list, the initial state remains "ther" and the list content starts to scroll. Like it was two different layers. I have no clue where to find the problem. Never heard about such a bug like this. Please give me advice, some keywords where to dig and find the solution. Thanks!
class BrowseFileFragment : Fragment() {
private lateinit var attachedCtx : Context
override fun onAttach(context: Context) {
super.onAttach(context)
this.attachedCtx = context
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?,savedInstanceState: Bundle?): View?
{
var view : View = inflater.inflate(R.layout.fragment_browse_file, container, false)
val modelFactory = FileBrowseModelFactory()
val data = modelFactory.create()
bindModelToView(data, view)
return view
}
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)
}
private fun bindModelToView(data: BrowseSettings, view: View)
{
var adapter = MyFileAdapter(data.FoldersAndFiles, this.attachedCtx)
var recyclerView = view.findViewById<RecyclerView>(R.id.fileItemView)
var linearLayoutManager = LinearLayoutManager(this.attachedCtx)
recyclerView.layoutManager = linearLayoutManager
recyclerView.adapter = adapter
var folderLabel = view.findViewById<TextView>(R.id.folderName)
folderLabel.text = data.CurrentFolder
}
}
The segment layout
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".BrowseFileFragment">
<TextView
android:id="#+id/folderName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="#string/hello_first_fragment"
android:textAlignment="viewStart"
android:textAppearance="#style/TextAppearance.AppCompat.Display1"
android:textStyle="bold"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/fileItemView"
android:layout_width="match_parent"
app:layout_constrainedHeight="true"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="#+id/folderName"
app:layout_constraintStart_toStartOf="#+id/folderName"
app:layout_constraintTop_toBottomOf="#+id/folderName" />
</androidx.constraintlayout.widget.ConstraintLayout>
The list line layout
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="60dp">
<TextView
android:background="#color/cardview_shadow_start_color"
android:id="#+id/itemName"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintBottom_toTopOf="parent"
android:padding="5dp"
android:textSize="30dp"
android:textStyle="bold" />
</androidx.constraintlayout.widget.ConstraintLayout>
And finally my adapter:
class MyFileAdapter(private val items: List<FileItem>, private val context: Context)
: RecyclerView.Adapter<MyFileAdapter.MyViewHolder>()
{
class MyViewHolder (itemView: View) :RecyclerView.ViewHolder(itemView), View.OnClickListener {
init {
itemView.setOnClickListener(this)
}
fun bindItem(f: FileItem) {
var name: TextView = itemView.findViewById(R.id.itemName) as TextView
name.text = f.Name
}
}
override fun getItemCount() = items.size
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
val view = LayoutInflater
.from(context)
.inflate(R.layout.recyclerview_filteitem_row, parent, false)
return MyViewHolder(view)
}
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
var item = items\[position\]
holder!!.bindItem( item )
}
}

It found out that as the whole list view is saved as a segment, this segment loads "automatically" and was loaded programatically also, and the two "loads" causes this thing. :( Thanks for your time guys.

how to properly make a vertical recycler view inside a scroll view that will not slow the fragment to appear?

I want to make UI like this:
as you can see, there is a vertical recycler view there. that recycler view is inside scroll view. so I want to make the screen can be scrolled down as much as item data in the recycler view. here is the xml I use:
<ScrollView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:id="#+id/scrollView_user_control"
tools:context=".Fragments.UserControl.UserControlFragment">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/constraintLayout_profile">
<de.hdodenhof.circleimageview.CircleImageView
android:id="#+id/imageView_profile_image_user_control"
android:layout_width="80dp"
android:layout_height="80dp"
android:src="#drawable/user"
app:civ_border_width="0.5dp"
app:civ_border_color="#FF000000"
android:layout_marginEnd="8dp"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginStart="8dp"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginTop="32dp"
app:layout_constraintTop_toTopOf="parent"/>
<TextView
android:text="User Fullname"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView_user_fullname_user_control"
android:layout_marginTop="24dp"
app:layout_constraintTop_toBottomOf="#+id/imageView_profile_image_user_control"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="8dp"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="8dp" android:textSize="18sp"/>
<TextView
android:text="user#email.com"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView_user_email_user_control"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginEnd="8dp"
app:layout_constraintStart_toStartOf="parent"
android:layout_marginStart="8dp"
app:layout_constraintTop_toBottomOf="#+id/textView_user_fullname_user_control"
android:layout_marginTop="8dp"/>
<TextView
android:text="AKAN DIHADIRI"
android:layout_width="0dp"
android:layout_height="35dp"
android:id="#+id/textView_will_come_user_control"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
android:layout_marginTop="32dp"
app:layout_constraintTop_toBottomOf="#+id/textView_user_email_user_control"
android:gravity="center|left"
android:paddingStart="16dp" android:background="#D2D1D6"/>
<androidx.recyclerview.widget.RecyclerView
android:layout_width="0dp"
android:layout_height="wrap_content"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/textView_will_come_user_control"
tools:listitem="#layout/item_general_event"
android:id="#+id/recyclerView_attended_event_user_control"/>
<ImageView
android:src="#drawable/ic_settings"
android:layout_width="30dp"
android:layout_height="30dp"
android:id="#+id/imageView_gear_setting_user_control"
app:layout_constraintTop_toTopOf="#+id/imageView_profile_image_user_control"
app:layout_constraintEnd_toEndOf="parent" android:layout_marginEnd="24dp"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
if I fetch 20 data from server and set it those 20 items to the recycler view, it will make my app slow, I mean the fragment will appear around 2 seconds after fragment transaction.
If I limit the data to be only one data that fetched from server that need to be shown to recycler view. it will make my app faster.
so it clears that, the more items in the recycler view inside scroll view, the more slower it takes to show the fragment.
here is my code :
class UserControlFragment : Fragment() {
lateinit var progressBar : ProgressBar
lateinit var gearSettingImageView: ImageView
lateinit var emailTextView: TextView
lateinit var userFullNameTextView :TextView
lateinit var profilePictureImageView : ImageView
lateinit var fragmentView : View
lateinit var recyclerView : RecyclerView
lateinit var sharedPrefManager : SharedPreferenceManager
lateinit var eventAdapter : GeneralEventRecyclerViewAdapter
private var attendedEvents = ArrayList<Event>()
private var userData : User? = null
lateinit var mContext : Context
lateinit var mActivity : FragmentActivity
override fun onAttach(context: Context) {
super.onAttach(context)
mContext = context
activity?.let { mActivity = it }
}
override fun onCreateView(
inflater: LayoutInflater, container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
fragmentView = inflater.inflate(R.layout.fragment_user_control, container, false)
sharedPrefManager = SharedPreferenceManager.getInstance(mContext)
setUpViewsDeclaration()
getUserData()
updateUI()
initRecyclerView()
return fragmentView
}
private fun setUpViewsDeclaration() {
progressBar = mActivity.progressBar_main_activity
gearSettingImageView = fragmentView.findViewById(R.id.imageView_gear_setting_user_control)
emailTextView = fragmentView.findViewById(R.id.textView_user_email_user_control)
profilePictureImageView = fragmentView.findViewById(R.id.imageView_profile_image_user_control)
userFullNameTextView = fragmentView.findViewById(R.id.textView_user_fullname_user_control)
recyclerView = fragmentView.findViewById(R.id.recyclerView_attended_event_user_control)
}
private fun getUserData() {
userData = sharedPrefManager.loadUserData()
if (userData == null) {
performLogOut()
return
}
getAttendedEvents()
}
private fun updateUI() {
userData?.let {
userFullNameTextView.text = it.fullname
emailTextView.text = it.email
Picasso.get()
.load(it.profilePicturePath)
.into(profilePictureImageView)
}
}
private fun initRecyclerView() {
eventAdapter = GeneralEventRecyclerViewAdapter(mContext)
val layoutManager = LinearLayoutManager(mContext, RecyclerView.VERTICAL,false)
recyclerView.adapter = eventAdapter
recyclerView.layoutManager = layoutManager
recyclerView.isNestedScrollingEnabled = false
eventAdapter.setOnItemClickListener(object: OnEventKMListener {
override fun eventKMClicked(position: Int) {
val selectedEvent = attendedEvents[position]
val eventDetailDestination = UserControlFragmentDirections.actionGlobalDestinationEventDetail(selectedEvent)
Navigation.findNavController(fragmentView).navigate(eventDetailDestination)
}
})
}
private fun getAttendedEvents() {
showLoadingState(true)
FirestoreKMClient.getRecommendedEvents(userData!!.domicile) { errorMessage, events ->
errorMessage?.let {
activity?.toast(it)
} ?: run {
val eventList = events ?: ArrayList()
attendedEvents = eventList
eventAdapter.submitList(eventList)
showLoadingState(false)
}
}
}
private fun showLoadingState(enabled: Boolean) {
if (enabled) {
progressBar.visibility = View.VISIBLE
recyclerView.visibility = View.GONE
} else {
progressBar.visibility = View.GONE
recyclerView.visibility = View.VISIBLE
}
}
}
I have tried to move the background processing from onCreateView to onResume but it doesn't make any effect.
so how to solve this ? Java is OK

Kotlin Android Recycler view inside Fragment with Bottom Navigation not working

I am trying to develop social networking app which uses Android Jetpack Libraries but while using Navigation Component to use bottom navigation to navigate through fragments inside an activity , This Adapter throws an error at LayoutInflator() which causes app to crash
Can anyone help me through this:
My Adapter Class:
class FeedAdapter : PagedListAdapter<feed,FeedAdapter.ViewHolder>(FeedDiffCallBack()){
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
val userPost = LayoutInflater.from(parent.context)
.inflate(R.layout.feedrow,parent,false)
return ViewHolder(userPost)
}
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val feedItem = getItem(position)
if(feedItem != null){
holder.bind(feedItem)
}
}
class ViewHolder(itemView:View):RecyclerView.ViewHolder(itemView) {
//Retrieve data
private val username:TextView = itemView.post_name
private val userPic:ImageView = itemView.feedImage1
private val location:TextView = itemView.postLocation
private val time:TextView = itemView.postTime
private val post:ImageView = itemView.postImage
fun bind(feed: feed) = with(itemView){
//TODO:Bind Data with View
showFeedData(feed)
}
private fun showFeedData(feed: feed) {
username.text = feed.username
userPic.setImageURI(null)
userPic.visibility = View.GONE
location.text = feed.location
time.text = feed.timeStamp.toString()
post.setImageURI(Uri.parse(feed.mUrl))
}
}
}
class FeedDiffCallBack : DiffUtil.ItemCallback<feed>() {
override fun areItemsTheSame(oldItem:feed, newItem: feed): Boolean {
return oldItem?.id == newItem?.id
}
override fun areContentsTheSame(oldItem: feed, newItem: feed): Boolean {
return oldItem == newItem
}
}
Fragment Class:
class FeedFragment : Fragment() {
companion object {
fun newInstance() = FeedFragment()
}
private lateinit var viewModel: FeedViewModel
override fun onCreateView(
inflater: LayoutInflater,
container: ViewGroup?,
savedInstanceState: Bundle?
): View? {
val view = inflater.inflate(R.layout.feed_fragment, container, false)
val context = getContext() ?: return view
val factory = InjectorUtils.provideViewModelFactory(context)
viewModel =
ViewModelProviders.of(this,factory).get(FeedViewModel::class.java)
val adapter = FeedAdapter()
view.findViewById<RecyclerView>(R.id.feedView).adapter = adapter
view.findViewById<RecyclerView>(R.id.feedView).layoutManager =
LinearLayoutManager(MyApplication.getContext())
subscribeUI(adapter)
return view
}
private fun subscribeUI(adapter: FeedAdapter) {
viewModel.showFeed().observe(this, object:Observer<PagedList<feed>>{
override fun onChanged(t: PagedList<feed>?) {
adapter.submitList(t)
adapter.notifyDataSetChanged()
}
})
}
override fun onActivityCreated(savedInstanceState: Bundle?) {
super.onActivityCreated(savedInstanceState)
}
}
feed_row.xml
Individual item for recycler view -->
<RelativeLayout
android:id="#+id/postContainer"
android:layout_margin="10dp"
android:elevation="2dp"
android:background="#drawable/bg_parent_rounded_corner"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<!--TODO:Change to Circle Image View-->
<ImageView
android:id="#+id/profileImage"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_marginTop="5dp"
android:layout_marginLeft="5dp"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
/>
<LinearLayout
android:id="#+id/postDetail_1"
android:orientation="vertical"
android:layout_marginTop="5dp"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:layout_marginRight="20dp"
android:layout_alignParentRight="true">
<TextView
android:id="#+id/post_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
style="#style/LabelStyle"
android:textSize="15sp"
android:fontFamily="#font/sf_pro_display_semibold" />
<LinearLayout
android:id="#+id/postDetail_2"
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:id="#+id/postLocation"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<TextView
android:id="#+id/postTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="120dp" />
</LinearLayout>
</LinearLayout>
<ImageView
android:id="#+id/postImage"
android:layout_height="200dp"
android:layout_width="match_parent"
android:layout_below="#+id/postDetail_1"
android:adjustViewBounds="true"
android:scaleType="fitCenter"
android:layout_marginTop="6dp"
/>
</RelativeLayout>

Your issue might be in this method,
override fun onBindViewHolder(holder: ViewHolder, position: Int) {
val feedItem = getItem(position)
if(feedItem != null){
holder.bind(feedItem)
}
}
Your ViewHolder is using poisition from method parameter which might be inconsistent
See from here,
So, you should change line to this:
val feedItem = getItem(holder.adapterPosition)
instead of
val feedItem = getItem(position)
I hope it resolves the issue.

This might help some one looking for the same Exception to be cleared :
What I did is that my feed_row.xml above is included inside < layout > tags and I changed it in this way , So the exception got cleared:
Before Exception:
<layout xmlns:android="http://schemas.android.com/apk/res/android">
After changing to this Exception cleared:
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
I don't know how it works but it did work!!! So Anyone who knows what happens there can explain please!