SearchView從RecyclerView添加錯誤的項目

Question

實際上，我正在嘗試在我的RecyclerView中添加一個SearchView，以便搜索其中的各種商品，

但是當我在SearchView中搜索一個結果時遇到了一個問題，當我單擊它時就發現了所選擇的項目是錯誤的，或者更好的是，它是來自主ArrayList的項目，而不是您在中看到的搜索結果當我按它的小吃店說我已經選擇了貝勒斯時，我正在搜索貝勒斯下面的gif圖像，但是當我將其作為子項添加到另一個回收站時，它添加了ABBONDANTE而不是貝勒斯。

這是我的適配器的ViewHolder

itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(listener != null){
                    int position = getAdapterPosition();
                    if(position != RecyclerView.NO_POSITION){
                        listener.onItemClick(position);
                        Snackbar.make(v,variantiConstructors.get(position).getDeskT(),Snackbar.LENGTH_SHORT).show();
                    }
                }
            }
        });

這是我來自Activity的onClickListener，我將項目添加到其他RecyclerView

   adapterVarianti.setOnItemClickListener(new AdapterVarianti.OnItemClickListener() {
            @Override
            public void onItemClick(int position) {

                search.clearFocus();

                if (dummyDataItems.size() != 0) {

                    if (tipo.toString().equals("CON ") || tipo.toString().equals("PIU' ") || tipo.toString().equals("MENO ") || tipo.toString().equals("SENZA ")) {

// Here i'm adding the selected item to a String builder but i think it's here where i'm doing something wrong

                        tipo.append(filteredVariable.get(position).getDeskT());

// Adding item from the recyclerView where there is searchView to last item from the recyclerView on background.

                        ItemPTERM lastAdded = dummyDataItems.get(dummyDataItems.size() - 1);
                        lastAdded.setVariant(new Variant(tipo.toString()));

                        if (exampleAdapter.getItemCount() > 0) {
                            mRecyclerViewTOP.scrollToPosition(exampleAdapter.getItemCount() - 1);
                        }
                        exampleAdapter.notifyDataSetChanged();

                        tipo = new StringBuilder();

                        if(segmentedButtonGroup.getPosition() == 0){
                            tipo = new StringBuilder();
                            tipo.append("CON ");
                        }
                        if(segmentedButtonGroup.getPosition() == 1){
                            tipo = new StringBuilder();
                            tipo.append("PIU' ");
                        }
                        if(segmentedButtonGroup.getPosition() == 2){
                            tipo = new StringBuilder();
                            tipo.append("MENO ");
                        }
                        if(segmentedButtonGroup.getPosition() == 3){
                            tipo = new StringBuilder();
                            tipo.append("SENZA ");
                        }

                    }
                }
            }
        });

這是我的帶有過濾器的適配器代碼

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


    private ArrayList<VariantiConstructor> variantiConstructors;
    private ArrayList<VariantiConstructor> mFilteredList;
    private OnItemClickListener mListener;

    public interface  OnItemClickListener{
        void onItemClick(int position);
    }

    public void setOnItemClickListener(OnItemClickListener listener){
        mListener = listener;
    }

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

    AdapterVarianti(ArrayList<VariantiConstructor> exampleList){
        variantiConstructors = exampleList;
        mFilteredList = variantiConstructors;
    }

    @Override
    public void onBindViewHolder(@NonNull final AdapterVarianti.ExampleViewHolder holder, final int position) {
        final VariantiConstructor item = variantiConstructors.get(position);

        holder.desc.setText(item.getDeskT());
        holder.prepiu.setText(String.valueOf(item.getPrice()));
        holder.premeno.setText(String.valueOf(item.getPacq()));

        if(position % 2 == 0 ){
            holder.itemView.setBackgroundColor(Color.parseColor("#17e1a0"));

        }else if(position % 2 == 1){
            holder.itemView.setBackgroundColor(Color.parseColor("#7EC0EE"));
        }

    }


    @Override
    public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence constraint) {
                final FilterResults oReturn = new FilterResults();
                final ArrayList<VariantiConstructor> results = new ArrayList<>();
                if (mFilteredList == null)
                    mFilteredList = new ArrayList<>(variantiConstructors);
                if (constraint != null && constraint.length() > 0) {
                    if (mFilteredList != null && mFilteredList.size() > 0) {
                        for (final VariantiConstructor cd : mFilteredList) {
                            if (cd.getDeskT().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<VariantiConstructor>) results.values);
                // FIXME: 8/16/2017 implement Comparable with sort below
                ///Collections.sort(itemList);
                notifyDataSetChanged();
            }
        };
    }

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

    public class ExampleViewHolder extends RecyclerView.ViewHolder {

        public TextView desc;
        public TextView prepiu;
        public TextView premeno;

        ExampleViewHolder(View itemView, final OnItemClickListener listener) {
            super(itemView);

            desc = itemView.findViewById(R.id.Desc);
            prepiu = itemView.findViewById(R.id.PrePiu);
            premeno = itemView.findViewById(R.id.PreMeno);


            itemView.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if(listener != null){
                        int position = getAdapterPosition();
                        if(position != RecyclerView.NO_POSITION){
                            listener.onItemClick(position);
                            Snackbar.make(v,variantiConstructors.get(position).getDeskT(),Snackbar.LENGTH_SHORT).show();
                        }
                    }
                }
            });


        }
    }


}

Answer 1

通過使用以下代碼將列表再次傳遞給Activity來解決：

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

並在活動代碼中：

 tipo.append(adapterVarianti.getList().get(position).getDeskT());