How to Add/Remove Object in Recyclerview Using Arraylist in Android

Android RecyclerView addition & removal of items

I have done something similar.
In your MyAdapter:

public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
    public CardView mCardView;
    public TextView mTextViewTitle;
    public TextView mTextViewContent;
    public ImageView mImageViewContentPic;
    
    public ImageView imgViewRemoveIcon;
    public ViewHolder(View v) {
        super(v);
        mCardView = (CardView) v.findViewById(R.id.card_view);
        mTextViewTitle = (TextView) v.findViewById(R.id.item_title);
        mTextViewContent = (TextView) v.findViewById(R.id.item_content);
        mImageViewContentPic = (ImageView) v.findViewById(R.id.item_content_pic);
        //......
        imgViewRemoveIcon = (ImageView) v.findViewById(R.id.remove_icon);

        mTextViewContent.setOnClickListener(this);
        imgViewRemoveIcon.setOnClickListener(this);
        v.setOnClickListener(this);
        mTextViewContent.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                if (mItemClickListener != null) {
                    mItemClickListener.onItemClick(view, getPosition());
                }
                return false;
            }
        });
    }


    @Override
    public void onClick(View v) {
        //Log.d("View: ", v.toString());
        //Toast.makeText(v.getContext(), mTextViewTitle.getText() + " position = " + getPosition(), Toast.LENGTH_SHORT).show();
        if(v.equals(imgViewRemoveIcon)){
            removeAt(getPosition());
        }else if (mItemClickListener != null) {
            mItemClickListener.onItemClick(v, getPosition());
        }
    }
}

public void setOnItemClickListener(final OnItemClickListener mItemClickListener) {
    this.mItemClickListener = mItemClickListener;
}
public void removeAt(int position) {
    mDataset.remove(position);
    notifyItemRemoved(position);
    notifyItemRangeChanged(position, mDataSet.size());
}

Edit:

getPosition() is deprecated now, use getAdapterPosition() instead.

How to remove item from recyclerView in android

I think you should call remove(holder.getAdapterPosition()) instead of remove(position) because, when the holder's countdown finishes, it might have changed its position.

Suppose the following situation:

1º holder -> 5 seconds countdown

2º holder -> 10 seconds countdown

Since the second holder finishes after the first one, after 10 seconds, remove(1) will be called but, since the first holder has already been removed, the second holder's position will be 0. Hence, it should call remove(0) instead of remove(1) (which will cause an IndexOutOfBoundsException).

How to remove items from recyclerview adapter

Try this would work notifyItemRemoved(position)

holder.canBtn.setOnClickListener(v -> {
    cancelConfirmation(position);
});

Then pass as parameter of the current position as below cancelConfirmation(int position) and finally when the response is successful remove the item as below

if (response.isSuccessful()) {
    mData.remove(position)
    notifyItemRemoved(position);
}

Take a look at the official documentation

remove an item from one recyclerview and add it to another

well, nobody answered me again and I found the solution myself:
I added both Arraylists in the adapter and exchanged datas within the adapter itself.

adapter:

public class RecyclerViewAdapter extends RecyclerView.Adapter<ViewHolder> {
    private ArrayList<TaskModel> tasks;
    private ArrayList<TaskModel> tasks2;
    private Context context;



    public RecyclerViewAdapter(Context context, ArrayList<TaskModel> list1, ArrayList<TaskModel> list2){
        tasks = list1;
        tasks2 = list2;
        this.context = context;
    }
    @Override
    public void onBindViewHolder(@NonNull final ViewHolder holder, final int position) {
        holder.title.setText(tasks.get(position).getTitle());
        holder.description.setText(tasks.get(position).getDescription());

        holder.checkBox.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                        tasks2.add(tasks.get(position));
                        tasks.remove(position);
                        MainActivity.listView.getAdapter().notifyDataSetChanged();
                        MainActivity.finishedListView.getAdapter().notifyDataSetChanged();
            }
        });
    }

my data return after remove item in recyclerview

You forgot to save list after removing item:

public void removeItem(int position) {
    mExampleList.remove(position);
    // saving the list to shared preference:
    SharedPreferences sharedPreferences = this.getActivity().getSharedPreferences("shared preferences12", Context.MODE_PRIVATE);
    sharedPreferences.edit().putString("task list12", new Gson().toJson(mExampleList)).apply();
    ///////////// end of saving
    mAdapter.notifyItemRemoved(position);
    mAdapter.notifyDataSetChanged();
}