Develop Reference

How to get string value from a recyclerview

i have a recyclerview for a movie and i need the movie name for using intent putextra. I Already make the click listener and got the adapter position, but but it only returns the array of the adapter like in the picture.
picture of output in logcat
how can i get the strings so i can use the intent putextra?
here is my recyclerview code
public class movieRecyclerViewAdapter extends RecyclerView.Adapter<movieRecyclerViewAdapter.myViewHolder> {
private static final String TAG = "movieRecyclerViewAdapter";
private onMovieClickListener movieClickListener;
private final ArrayList<movie> movies;
public movieRecyclerViewAdapter(ArrayList<movie> movieArrayList, onMovieClickListener onMovieClickListener){
this.movies = movieArrayList;
this.movieClickListener = onMovieClickListener;
Log.d("mainMenuAdmin", "Adapter List size : " + movieArrayList.size() );
}
#NonNull
#Override
public movieRecyclerViewAdapter.myViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_movie, parent, false);
return new myViewHolder(view, movieClickListener);
}
#Override
public void onBindViewHolder(#NonNull movieRecyclerViewAdapter.myViewHolder holder, int position) {
Log.d(TAG, "onBindViewHolder: called");
String img = movies.get(position).getMovie_image();
holder.judul.setText(movies.get(position).getNamaMovie());
holder.tahun.setText(movies.get(position).getTahunMovie());
Picasso.get().load(img).error(R.mipmap.ic_launcher).placeholder(R.mipmap.ic_launcher_round).into(holder.image);
}
#Override
public int getItemCount() {
return movies.size();
}
public static class myViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private final TextView judul, tahun;
private final ImageView image;
RelativeLayout parent;
onMovieClickListener onMovieClickListener;
public myViewHolder(#NonNull View itemView, onMovieClickListener onMovieClickListener) {
super(itemView);
judul = itemView.findViewById(R.id.txtJudul);
tahun = itemView.findViewById(R.id.txtTahun);
image = itemView.findViewById(R.id.imagePoster);
parent = itemView.findViewById(R.id.parent_layout);
this.onMovieClickListener = onMovieClickListener;
itemView.setOnClickListener(this);
}
#Override
public void onClick(View view) {
onMovieClickListener.onMovieClick(view, this.getLayoutPosition());
}
}
public interface onMovieClickListener{
void onMovieClick(View v, int position);
}}
i've tried everything but it still return the array value not the string value of movie name

You have made a good effort 👌 but you are doing few things wrong here. Let me explain you all things step by step.
You need a string value from your click listener but you are passing a view + position in click. so to fix this you firstly need to change you interface like this.
public interface onMovieClickListener{
void onMovieClick(movie movie, int position);
}
2nd mistake is that you don't have your movie in your ViewHolder. Thats why you can not pass string in your listener. To fix this you need to change your myViewHolder like below.
public static class myViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private final TextView judul, tahun;
private final ImageView image;
RelativeLayout parent;
movie movie;
onMovieClickListener onMovieClickListener;
public myViewHolder(#NonNull View itemView) {
super(itemView);
judul = itemView.findViewById(R.id.txtJudul);
tahun = itemView.findViewById(R.id.txtTahun);
image = itemView.findViewById(R.id.imagePoster);
parent = itemView.findViewById(R.id.parent_layout);
itemView.setOnClickListener(this);
}
public void bind(movie movie, onMovieClickListener onMovieClickListener)
{
this.movie = movie;
this.onMovieClickListener = onMovieClickListener;
}
#Override
public void onClick(View view) {
onMovieClickListener.onMovieClick(movie, this.getLayoutPosition());
}
}
Change your adapter functions like this.
#NonNull
#Override
public movieRecyclerViewAdapter.myViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_movie, parent, false);
return new myViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull movieRecyclerViewAdapter.myViewHolder holder, int position) {
Log.d(TAG, "onBindViewHolder: called");
String img = movies.get(position).getMovie_image();
holder.judul.setText(movies.get(position).getNamaMovie());
holder.tahun.setText(movies.get(position).getTahunMovie());
Picasso.get().load(img).error(R.mipmap.ic_launcher).placeholder(R.mipmap.ic_launcher_round).into(holder.image);
holder.bind(movies.get(position), this.movieClickListener);
}
That's IT!!!
Now you have your movie in your listener and you can use your movie to get any variable inside movie like movie name etc..
I am pasting whole java file here so that you can just copy and paste code to test.
public class movieRecyclerViewAdapter extends RecyclerView.Adapter<movieRecyclerViewAdapter.myViewHolder> {
private static final String TAG = "movieRecyclerViewAdapter";
private onMovieClickListener movieClickListener;
private final ArrayList<movie> movies;
public movieRecyclerViewAdapter(ArrayList<movie> movieArrayList, onMovieClickListener onMovieClickListener){
this.movies = movieArrayList;
this.movieClickListener = onMovieClickListener;
Log.d("mainMenuAdmin", "Adapter List size : " + movieArrayList.size() );
}
#NonNull
#Override
public movieRecyclerViewAdapter.myViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_movie, parent, false);
return new myViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull movieRecyclerViewAdapter.myViewHolder holder, int position) {
Log.d(TAG, "onBindViewHolder: called");
String img = movies.get(position).getMovie_image();
holder.judul.setText(movies.get(position).getNamaMovie());
holder.tahun.setText(movies.get(position).getTahunMovie());
Picasso.get().load(img).error(R.mipmap.ic_launcher).placeholder(R.mipmap.ic_launcher_round).into(holder.image);
holder.bind(movies.get(position), this.movieClickListener);
}
#Override
public int getItemCount() {
return movies.size();
}
public static class myViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
private final TextView judul, tahun;
private final ImageView image;
RelativeLayout parent;
movie movie;
onMovieClickListener onMovieClickListener;
public myViewHolder(#NonNull View itemView) {
super(itemView);
judul = itemView.findViewById(R.id.txtJudul);
tahun = itemView.findViewById(R.id.txtTahun);
image = itemView.findViewById(R.id.imagePoster);
parent = itemView.findViewById(R.id.parent_layout);
itemView.setOnClickListener(this);
}
public void bind(movie movie, onMovieClickListener onMovieClickListener)
{
this.movie = movie;
this.onMovieClickListener = onMovieClickListener;
}
#Override
public void onClick(View view) {
onMovieClickListener.onMovieClick(movie, this.getLayoutPosition());
}
}
public interface onMovieClickListener{
void onMovieClick(movie movie, int position);
}}
**
Few suggestions:
Don't send View via your listener to your activity/fragment
Your camel case for your variables.
Start class name with capital letter.
**
These few suggestions will make your code more readable.
Happy Coding 💚!!

Change interface listener to :
public interface onMovieClickListener {
void onMovieClick(View v, Movie movie);
}
Then define your setOnClickListener as :
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onMovieClickListener.onMovieClick(v, movies.get(getAdapterPosition()));
}
}
});
You'll be able to get the selected movie and display name as needed.

Android Recycler View problem in "onBindViewHolder" function "static method cannot be called from non-static method"

I am new to android and java. I am not able to call ViewHolder.setCategoryName(name); in the onBindViewHolder function. I know there are probably similar questions but nothing has worked for me yet. The compiler gives error "non-static functions cannot be called from a static context", I haven't used static keyword anywhere in my code.
public class CategoryAdapter extends RecyclerView.Adapter<CategoryAdapter.ViewHolder> {
private List<CategoryModel> categoryModelList;
public CategoryAdapter(List<CategoryModel> categoryModelList) {
this.categoryModelList = categoryModelList;
}
#NonNull
#Override
public CategoryAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int position) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.category_item,viewGroup,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull CategoryAdapter.ViewHolder holder, int position) {
String icon = categoryModelList.get(position).getCategoryIconLink();
String name = categoryModelList.get(position).getCategoryName();
ViewHolder.setCategoryName(name);
}
#Override
public int getItemCount() {
return categoryModelList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private ImageView categoryIcon;
private TextView categoryName;
public ViewHolder(#NonNull View itemView) {
super(itemView);
categoryIcon = itemView.findViewById(R.id.category_icon);
categoryName = itemView.findViewById(R.id.category_name);
}
private void setCategoryIcon(){
}
private void setCategoryName(String name){
categoryName.setText(name);
}
}
}

The problem is that your method isn't static but you are trying to call from a static context:
private void setCategoryName
You would need to do:
private static void setCategoryName
However, for this type of action, you can just use the holder variable:
holder.bind(categoryModelList.get(position))

try this:
public class CategoryAdapter extends RecyclerView.Adapter<CategoryAdapter.ViewHolder> {
private List<CategoryModel> categoryModelList;
public CategoryAdapter(List<CategoryModel> categoryModelList) {
this.categoryModelList = categoryModelList;
}
#NonNull
#Override
public CategoryAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int position) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.category_item,viewGroup,false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull CategoryAdapter.ViewHolder holder, int position) {
holder.bind(categoryModelList.get(position))
}
#Override
public int getItemCount() {
return categoryModelList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
private ImageView categoryIcon;
private TextView categoryName;
public ViewHolder(#NonNull View itemView) {
super(itemView);
categoryIcon = itemView.findViewById(R.id.category_icon);
categoryName = itemView.findViewById(R.id.category_name);
}
public void bind(CategoryModel categoryModel){
categoryName.setText(categoryModel.getCategoryName());
}
}
}

How to make one view bigger than the other views in RecyclerView?

I have few images in the json API, and I managed to fetch those images using volley Library. I used recyclerview with an image adapter to display image views vertically in two columns, but I want to make one image big and display it as the first image that user can click on. Also that image will be changed each interval of time. Basically, the API will do all the backend task like setting the time and telling which image to be displayed on the top of the recyclerview if not all images must have the same size and be shown in 2 columns vertically.
I have square layout class for recyclerview. I just want to know how I can do this. Even the concept will be fine.

you will have to create two view one for small item other for the header item and in onBindViewHolder have to bind those accordingly the following code is an example of a news article app and should help.
public class AdapterNewsArticlesListWithHeader extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private List<NewsArticles> items = new ArrayList<>();
private Context ctx;
private NewsArticles header;
private static final int TYPE_HEADER = 0;
private static final int TYPE_ITEM = 1;
private OnItemClickListener mOnItemClickListener;
public interface OnItemClickListener {
void onItemClick(View view, NewsArticles obj, int position);
}
public void setOnItemClickListener(final OnItemClickListener mItemClickListener) {
this.mOnItemClickListener = mItemClickListener;
}
// Provide a suitable constructor (depends on the kind of dataset)
public AdapterNewsArticlesListWithHeader(Context context, NewsArticles header, List<NewsArticles> items) {
this.items = items;
this.header = header;
ctx = context;
}
public class ViewHolder extends RecyclerView.ViewHolder {
// each data item is just a string in this case
public TextView title;
public TextView short_content;
public TextView date;
public ImageView image;
public LinearLayout lyt_parent;
public ViewHolder(View v) {
super(v);
title = (TextView) v.findViewById(R.id.title);
short_content = (TextView) v.findViewById(R.id.short_content);
date = (TextView) v.findViewById(R.id.date);
image = (ImageView) v.findViewById(R.id.image);
lyt_parent = (LinearLayout) v.findViewById(R.id.lyt_parent);
}
}
class ViewHolderHeader extends RecyclerView.ViewHolder {
public TextView title;
public TextView date;
public ImageView image;
public LinearLayout lyt_parent;
public ViewHolderHeader(View v) {
super(v);
title = (TextView) v.findViewById(R.id.title);
date = (TextView) v.findViewById(R.id.date);
image = (ImageView) v.findViewById(R.id.image);
lyt_parent = (LinearLayout) v.findViewById(R.id.lyt_parent);
}
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == TYPE_HEADER) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_header, parent, false);
return new ViewHolderHeader(v);
} else if (viewType == TYPE_ITEM) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_news, parent, false);
return new ViewHolder(v);
}
return null;
}
// Replace the contents of a view (invoked by the layout manager)
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
if (holder instanceof ViewHolderHeader) {
ViewHolderHeader vHeader = (ViewHolderHeader) holder;
vHeader.title.setText(header.getTitle());
vHeader.date.setText(header.getDate());
Picasso.with(ctx).load(header.getImage()).into(vHeader.image);
vHeader.lyt_parent.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//TODO: do your thing
}
});
} else if (holder instanceof ViewHolder) {
final NewsArticles c = items.get(position);
ViewHolder vItem = (ViewHolder) holder;
vItem.title.setText(c.getTitle());
vItem.short_content.setText(c.getShort_content());
vItem.date.setText(c.getDate());
Picasso.with(ctx).load(c.getImage()).into(vItem.image);
vItem.lyt_parent.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//TODO: do your thing
}
});
}
}
// need to override this method
#Override
public int getItemViewType(int position) {
if (isPositionHeader(position)) {
return TYPE_HEADER;
}
return TYPE_ITEM;
}
private boolean isPositionHeader(int position) {
return position == 0;
}
public NewsArticles getItem(int position) {
return items.get(position);
}
// Return the size of your dataset (invoked by the layout manager)
#Override
public int getItemCount() {
return items.size();
}
}

Usage time of all (individual) applications in android [Usage]

I tried executing the code below, but this gives the "Last Time Used" of the applications.
public class UsageListAdapter extends RecyclerView.Adapter<UsageListAdapter.ViewHolder> {
private List<CustomUsageStats> mCustomUsageStatsList = new ArrayList<>();
private DateFormat mDateFormat = new SimpleDateFormat();
/**
* Provide a reference to the type of views that you are using (custom ViewHolder)
*/
public static class ViewHolder extends RecyclerView.ViewHolder {
private final TextView mPackageName;
private final TextView mLastTimeUsed;
private final ImageView mAppIcon;
public ViewHolder(View v) {
super(v);
mPackageName = (TextView) v.findViewById(R.id.textview_package_name);
mLastTimeUsed = (TextView) v.findViewById(R.id.textview_last_time_used);
mAppIcon = (ImageView) v.findViewById(R.id.app_icon);
}
public TextView getLastTimeUsed() {
return mLastTimeUsed;
}
public TextView getPackageName() {
return mPackageName;
}
public ImageView getAppIcon() {
return mAppIcon;
}
}
public UsageListAdapter() {
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View v = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.usage_row, viewGroup, false);
return new ViewHolder(v);
}
#Override
public void onBindViewHolder(ViewHolder viewHolder, final int position) {
viewHolder.getPackageName().setText(
mCustomUsageStatsList.get(position).usageStats.getPackageName());
long lastTimeUsed = mCustomUsageStatsList.get(position).usageStats.getLastTimeUsed();
viewHolder.getLastTimeUsed().setText(mDateFormat.format(new Date(lastTimeUsed)));
viewHolder.getAppIcon().setImageDrawable(mCustomUsageStatsList.get(position).appIcon);
}
#Override
public int getItemCount() {
return mCustomUsageStatsList.size();
}
public void setCustomUsageStatsList(List<CustomUsageStats> customUsageStats) {
mCustomUsageStatsList = customUsageStats;
}
}
So can anyone modify this and get the time used of each application (in foreground/background) and display it.

RecyclerView messed up data when scrolling

Having a problem when scrolling RecyclerView after scrolling down and up. The idea is to change elements color, but when I scroll down everything is great and when the scroll goes up - the elements, which are shouldn't be colored are changing color.
Here's my adapter:
public class NotificationsAdapter extends RecyclerView.Adapter<NotificationsAdapter.ViewHolder> {
private NotificationData notificationData;
private Context mContext;
private ArrayList<NotificationData> infromationList = new ArrayList<>();
public NotificationsAdapter(Context context, ArrayList<NotificationData> infromationList) {
this.infromationList = infromationList;
this.mContext = context;
}
#Override
public NotificationsAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemLayoutView;
ViewHolder viewHolder;
itemLayoutView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.notification_single_item, parent, false);
viewHolder = new ViewHolder(itemLayoutView, viewType);
return viewHolder;
}
#Override
public void onBindViewHolder(NotificationsAdapter.ViewHolder holder, int position) {
notificationData = infromationList.get(position);
holder.notificationDate.setText(convertDate(notificationData.getDate()));
holder.notificationStatus.setText(notificationData.getNotificationStatus());
holder.orderDescription.setText(notificationData.getNotificationLabel());
if ("true".equals(notificationData.getReadStatus())) {
holder.root.setBackgroundColor(mContext.getResources().getColor(R.color.white));
holder.notificationStatus.setTypeface(Typeface.create("sans-serif-light", Typeface.NORMAL));
}
}
#Override
public int getItemCount() {
return (null != infromationList ? infromationList.size() : 0);
}
public static class ViewHolder extends RecyclerView.ViewHolder {
public TextView notificationDate;
public TextView notificationStatus;
public TextView orderDescription;
public LinearLayout root;
public ViewHolder(View itemView, int position) {
super(itemView);
notificationDate = (TextView) itemView.findViewById(R.id.notificationDate);
notificationStatus = (TextView) itemView.findViewById(R.id.notificationStatus);
orderDescription = (TextView) itemView.findViewById(R.id.orderDescription);
root = (LinearLayout) itemView.findViewById(R.id.root);
}
}
private String convertDate(String date) {
String convertedDate;
String[] parts = new String[2];
parts = date.split("T");
date = parts[0];
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-mm-dd");
Date testDate = null;
try {
testDate = sdf.parse(date);
}catch(Exception ex){
ex.printStackTrace();
}
SimpleDateFormat formatter = new SimpleDateFormat("dd.mm.yyyy");
convertedDate = formatter.format(testDate);
return convertedDate;
}
}

I had the same problem and the only solution I found for this is:
holder.setIsRecyclable(false);
Your recycler will not recycle anymore so the items will be the same when you scroll, and if you want to delete some item do not use notifyitemRemoved(position), use notifyDataSetChanged() instead.

Add setHasStableIds(true); in your adapter constructor and
Override these two methodes in adapter.
#Override
public long getItemId(int position) {
return position;
}
#Override
public int getItemViewType(int position) {
return position;
}

There is problem in your onBindViewHolder(...), should be:
if ("true".equals(notificationData.getReadStatus())) {
holder.root.setBackgroundColor(mContext.getResources().getColor(R.color.white));
holder.notificationStatus.setTypeface(Typeface.create("sans-serif-light", Typeface.NORMAL));
}
else {
holder.root.setBackgroundColor(yourDefaultColor);
holder.notificationStatus.setTypeface(yourDefaultTypeface);
}

#Override
public void onBindViewHolder(final MyViewHolder holder, int position) {
final UserData userdata = userdataList.get(position);
holder.setIsRecyclable(false);
holder.name.setText(userdata.getName());
holder.active.setChecked(userdata.getActive());
String userPic = userdata.getPic();
holder.active.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked){
userdata.setActive(isChecked);
}
});
}

onBindHolder called several times as Recycler View needs a view unless new one. So each time you set visilibity in child views, other views states are also changes.
Whenever you scroll up and down, these views are getting re-drawed with wrong visibility options so always specify both the conditions cause recycler view doesn't know the previous state/conditions/values of our widgets.
Solution :
If in If block you set visibility of any android widget.setVisibility(View.Gone) then in else block you have to set it's visibility opposite value like widget.setVisibility(View.Visible) to overcome the above problem.
#Override
public void onBindViewHolder(ViewHolder viewHolder, int i) {
viewHolder.tvName.setText(ModelCategoryProducts.name.get(i));
viewHolder.tvPrice.setText("Rs."+String.format("%.2f", Float.parseFloat(ModelCategoryProducts.price.get(i))));
if(ModelCategoryProducts.special_price.get(i).equals("null")) {
viewHolder.tvSpecialPrice.setVisibility(View.GONE); // here visibility is gone and in else it's opposite visibility i set.
viewHolder.tvPrice.setTextColor(Color.parseColor("#ff0000"));
viewHolder.tvPrice.setPaintFlags(0);// here paint flag is 0 and in else it's opposite flag that i want is set.
}else if(!ModelCategoryProducts.special_price.get(i).equals("null")){
viewHolder.tvPrice.setTextColor(Color.parseColor("#E0E0E0"));
viewHolder.tvSpecialPrice.setVisibility(View.VISIBLE);
viewHolder.tvSpecialPrice.setText("Rs." + String.format("%.2f", Float.parseFloat(ModelCategoryProducts.special_price.get(i))));
viewHolder.tvPrice.setPaintFlags(viewHolder.tvPrice.getPaintFlags() | Paint.STRIKE_THRU_TEXT_FLAG);
}
if (!ModelCategoryProducts.image_url.get(i).isEmpty()) {
Picasso.with(context)
.load(ModelCategoryProducts.image_url.get(i))
.into(viewHolder.ivProduct);
}
viewHolder.setClickListener(new ItemClickListener() {
#Override
public void onClick(View view, int position, boolean isLongClick) {
if (isLongClick) {
// Toast.makeText(context, "#" + position + " - " + ModelCategoryProducts.name.get(position) + " (Long click)", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(context, "#" + position + " - " + ModelCategoryProducts.name.get(position), Toast.LENGTH_SHORT).show();
Intent i = new Intent(context, ProductDetail.class);
i.putExtra("position",position);
i.putExtra("flagHlvCheck", 5);
context.startActivity(i);
}
}
});
}

Try adding this in the adapter.
#Override
public int getItemViewType(int position)
{
return position;
}

If someone might face issues with some of the fields in the viewholder getting random values, then try to set all the fields with atleast any default value.

#Override
public DataObjectHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.custom_layout, parent, false);
DataObjectHolder dataObjectHolder = new DataObjectHolder(view);
dataObjectHolder.setIsRecyclable(false);
return dataObjectHolder;
}

The best way is indicate an ArrayList for example as a Model and have some parameters and define setter and getter for that.
package com.test.mohammaddvi.snappfood.Model;
public class OfferList {
private boolean visibilityOrder;
private int number;
public OfferList(int number, boolean visibilityOrder) {
this.number=number;
this.visibilityOrder=visibilityOrder;
}
public boolean isVisibilityOrder() {
return visibilityOrder;
}
public void setVisibilityOrder(boolean visibilityOrder) {
this.visibilityOrder = visibilityOrder;
}
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
}
and set the the variables as where you want and for get you must do it in onBindViewHolder of your recyclerview Adapter:
if (offerList.isVisibilityOrder()) {
holder.foodMinusButton.setVisibility(View.VISIBLE);
holder.foodOrderNumber.setText(offerList.getNumber() + "");
holder.foodOrderNumber.setVisibility(View.VISIBLE);
} else {
holder.foodMinusButton.setVisibility(View.INVISIBLE);
}
and indicate it your recyclerview adapter:
public class RecyclerViewMenuFragmentAdapter extends RecyclerView.Adapter<RecyclerViewMenuFragmentAdapter.SingleItemInMenuFragment> {
private ArrayList<Food> foodList;
private Context mContext;
private List<OfferList> offers;
public RecyclerViewMenuFragmentAdapter(ArrayList<Food> foodList, Context mContext, List<OfferList> offers) {
this.foodList = foodList;
this.mContext = mContext;
this.offers = offers;
}

class AnyRVAdapter: androidx.recyclerview.widget.RecyclerView.Adapter<AnyRVAdapter.MViewHolder>() {
// put saver outside viewholder
val saveLayId = mutableListOf<Int>()
inner class MViewHolder(itemView: View) :
androidx.recyclerview.widget.RecyclerView.ViewHolder(itemView) {
fun bindModel(d: TesListModel.MList, position:Int) {
// concept here
val showedId= saveLayId.find { s -> s == layoutPosition}
if (idClicked == null) {
// save the layout id
lyClicked.visibility = View.VISIBLE
saveLayId.add(layoutPosition)
} else {
// remove the layout id
lyClicked.visibility = View.INVISIBLE
saveLayId.remove(layoutPosition)
}
}
}
but i think this code is heavy if you use for large data set.

Guys this has worked for me..
override fun setHasStableIds(hasStableIds: Boolean) {
setHasStableIds(true)
}
override fun getItemId(position: Int): Long {
return position.toLong()
}
override fun getItemViewType(position: Int): Int {
return position
}