滑动删除不起作用RecyclerView

Question

我正在尝试从RecyclerView上轻扫项目，但是当我删除它并关闭搜索时，被删除的项目仍然保留在列表中，但是当我在“搜索”中对其进行擦除时，它消失了。

如果我不使用搜索并在打开recyclerView时删除该项目，则可以将其删除。当我搜索并删除项目时就会出现问题。

这是我的适配器代码：

import android.annotation.SuppressLint;
import android.graphics.Color;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.TextView;

import java.util.ArrayList;

public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.ExampleViewHolder>  implements Filterable {


    private ArrayList<ItemModel> variantiConstructors;
    private ArrayList<ItemModel> mFilteredList;


    @NonNull
    @Override
    public ItemAdapter.ExampleViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_recycler,parent,false);
        RecyclerView.LayoutParams lp = new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        v.setLayoutParams(lp);
        return new ItemAdapter.ExampleViewHolder(v);
    }

    ItemAdapter(ArrayList<ItemModel> exampleList){
        variantiConstructors = exampleList;
        mFilteredList = variantiConstructors;
    }

    @Override
    public void onBindViewHolder(@NonNull final ItemAdapter.ExampleViewHolder holder, @SuppressLint("RecyclerView") final int position) {
        ItemModel item = variantiConstructors.get(position);

        holder.desc.setText(item.getCodiceArticolo());
        holder.qta.setText(item.getQta());

//        holder.qta.addTextChangedListener(new TextWatcher() {
//            @Override
//            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
//            }
//
//            @Override
//            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
//                variantiConstructors.get(position).setQta(holder.qta.getText().toString());
//            }
//
//            @Override
//            public void afterTextChanged(Editable editable) {
//            }
//        });


        if(position % 2 == 0 ){
            holder.itemView.setBackgroundColor(Color.parseColor("#5C5C5C"));

        }else if(position % 2 == 1){
            holder.itemView.setBackgroundColor(Color.parseColor("#9E9E9E"));
        }
    }


    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                final FilterResults oReturn = new FilterResults();
                final ArrayList<ItemModel> results = new ArrayList<>();
                if (mFilteredList == null)
                    mFilteredList = new ArrayList<>(variantiConstructors);
                if (constraint != null && constraint.length() > 0) {
                    if (mFilteredList != null && mFilteredList.size() > 0) {
                        for (final ItemModel cd : mFilteredList) {
                            if (cd.getCodiceArticolo().toLowerCase()
                                    .contains(constraint.toString().toLowerCase()))
                                results.add(cd);
                        }
                    }
                    oReturn.values = results;
                    oReturn.count = results.size(); //newly Aded by ZA
                } else {
                    oReturn.values = mFilteredList;
                    oReturn.count = mFilteredList.size(); //newly added by ZA
                }
                return oReturn;
            }

            @SuppressWarnings("unchecked")
            @Override
            protected void publishResults(final CharSequence constraint,
                                          FilterResults results) {
                variantiConstructors = new ArrayList<>((ArrayList<ItemModel>) results.values);
                notifyDataSetChanged();
            }
        };
    }

    @Override
    public int getItemCount() {
        return variantiConstructors.size();
    }

    public class ExampleViewHolder extends RecyclerView.ViewHolder {

        public TextView desc;
        public EditText qta;

        ExampleViewHolder(View itemView) {
            super(itemView);

            desc = itemView.findViewById(R.id.Desc);
            qta = itemView.findViewById(R.id.Qta);



        }
    }


    public ArrayList<ItemModel> getList(){
        return variantiConstructors;
    }


    public void removeItem(int position){

            variantiConstructors.remove(position);
            notifyDataSetChanged();
        }


    public ArrayList<ItemModel> getmFilteredList() {
        return mFilteredList;
    }
}