SharedPreferences没有给出正确的位置值？

Question

SharedPreferences setPref = v.getContext().getSharedPreferences("PlanetAdapter", Context.MODE_PRIVATE);
                    setPref.edit().putInt("position", position).commit();

SharedPreferences getPref = getActivity ().getSharedPreferences("PlanetAdapter", Context.MODE_PRIVATE);
                int pos = getPref.getInt("position",0);

RecyclerView.Adapter

public class PlanetAdapter extends RecyclerView.Adapter<PlanetAdapter.PlanetViewHolder> {


    public interface OnItemClickListener {
        void onItemClick(String item);
    }


    private ArrayList<String> episodeslist;
    private OnItemClickListener listener;

    public PlanetAdapter(ArrayList<String> episodeslist, OnItemClickListener listener) {
        this.episodeslist = episodeslist;
        this.listener = listener;
    }

    @Override
    public PlanetAdapter.PlanetViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.planet_row, parent,false);
        PlanetViewHolder vh=new PlanetViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(PlanetAdapter.PlanetViewHolder vh, int position) {
        TextView tv = (TextView) vh.itemView;
        tv.setText(episodeslist.get(position));
        tv.setCompoundDrawablesWithIntrinsicBounds(R.drawable.bg, 0, 0, 0);

        vh.bind(episodeslist.get(position), listener);

        //holder.image.setImageResource(R.drawable.planetimage);
        vh.text.setText(episodeslist.get(position).toString());
    }



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



    public class PlanetViewHolder extends RecyclerView.ViewHolder{
        protected TextView text;
        public PlanetViewHolder(View itemView) {
            super(itemView);
            text= (TextView) itemView.findViewById(R.id.text_id);
        }
        public void bind(final String item, final OnItemClickListener listener) {
            itemView.setOnClickListener(new View.OnClickListener() {
                @Override public void onClick(View v) {
                    int position = getPosition();
                     listener.onItemClick(item);

                    SharedPreferences setPref = v.getContext().getSharedPreferences("PlanetAdapter", Context.MODE_PRIVATE);
                    setPref.edit().putInt("position", position).commit();
                }
            });
        }
    }
}

Answer 1

我想说两种选择：

更改PlanetViewWholder以接收位置

public void bind(final String item, final Int position, final OnItemClickListener listener)

然后从OnBindViewWholder执行以下操作：

public interface OnItemClickListener {
        void onItemClick(String item, Int position);
    }

listener.onItemClick(item, position); // <-- Not the getPosition()