java - 如何解决recyclerview中按钮自动点击的问题？这是一个错误吗？

Question

对于我的 Android 项目，我在一个布局中使用了回收 View ，该布局有 10 多个 View 持有者，每个 View 持有者都有一个按钮和一个文本。

每当我单击第一个项目或 View 持有者中的按钮时，也会自动单击第 8 个项目。当我单击第二个按钮时，将单击第 9 个按钮。

于是我在google上搜索了这个问题，然后我发现这个问题很少见。我也得到了这种类型的解决方案，但这部分解决了我的问题。

所以我想知道这是错误还是我的错误？？

CaptionedImagesAdapterMenu.java

package com.boredboy.atithikhana;

import android.annotation.SuppressLint;
import android.content.Context;
import android.content.SharedPreferences;
import android.support.annotation.NonNull;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.PopupMenu;
import android.widget.TextView;
import android.widget.Toast;

import com.cepheuen.elegantnumberbutton.view.ElegantNumberButton;
import com.facebook.share.Share;

import java.util.Objects;


class CaptionedImagesAdapterMenu extends
        RecyclerView.Adapter<CaptionedImagesAdapterMenu.ViewHolder>{
    private String[] captions;
    private String[] foodName;
    private String[] desc;
    private String[] price;
    private Context context;
    private Listener listener;
    private Remover remover;
    private SparseBooleanArray hidebtns = new SparseBooleanArray();
    private SparseBooleanArray setnums = new SparseBooleanArray();


    public interface Remover{
        void onRemove(int position);
    }
    public interface Listener{
        void onClick(int position);
    }

    public static class ViewHolder extends RecyclerView.ViewHolder {
        private CardView cardView;
        private Button button;
        private  ElegantNumberButton numberButton;
        public ViewHolder(CardView v) {
            super(v);
            cardView = v;
            this.button = v.findViewById(R.id.addbt);
            this.numberButton = v.findViewById(R.id.numberincdec);
        }
    }

    public CaptionedImagesAdapterMenu(Context context,String[] foodName, String[] desc,String[] captions, String[] price){
        this.context = context;
        this.foodName = foodName;
        this.captions = captions;
        this.desc = desc;
        this.price = price;
    }

    public void setListener(Listener listener){
        this.listener = listener;
    }
    public void setRemover(Remover remover){
        this.remover =remover;
    }
    @Override
    public int getItemCount(){
        return captions.length;
    }

    @Override
    public CaptionedImagesAdapterMenu.ViewHolder onCreateViewHolder(
            ViewGroup parent, int viewType){
        CardView cv = (CardView) LayoutInflater.from(parent.getContext())
                .inflate(R.layout.card_captioned_image_menu, parent, false);;
        return new ViewHolder(cv);
    }

    @SuppressLint("SetTextI18n")
    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, @SuppressLint("RecyclerView") final int position){
        SharedPreferences preferences = context.getSharedPreferences("NEWV",0);
        SharedPreferences.Editor editor = preferences.edit();
        SharedPreferences prr = context.getSharedPreferences("ELEV",0);
        SharedPreferences.Editor editor1 = prr.edit();
        holder.button.setVisibility(hidebtns.get(position,false)?View.GONE:View.VISIBLE);
        holder.numberButton.setVisibility(hidebtns.get(position,false)?View.VISIBLE:View.GONE);
        String elval = prr.getString("elev","1");
        holder.numberButton.setNumber(Objects.requireNonNull(setnums.get(position) ? elval : "1"));
        CardView cardView = holder.cardView;
        TextView textView = cardView.findViewById(R.id.info_text);
        textView.setText(captions[position]);
        TextView textView1 = cardView.findViewById(R.id.info_menu);
        textView1.setText(desc[position]);
        TextView textView2 = cardView.findViewById(R.id.info_price);
        textView2.setText("₹ " + price[position]);
        TextView textView3 = cardView.findViewById(R.id.food_Info);
        textView3.setText(foodName[position]);

        holder.button.setOnClickListener(view -> {
            holder.button.setVisibility(View.GONE);
            holder.numberButton.setVisibility(View.VISIBLE);
            holder.numberButton.setNumber("1");
            hidebtns.put(position,true);
            setnums.put(position,false);
            editor.putString("newv", String.valueOf(holder.numberButton.getNumber()));
            editor.apply();
            if(listener!=null)
            {
              listener.onClick(position);
            }
        });


        holder.numberButton.setOnValueChangeListener((view, oldValue, newValue) -> {
            if (newValue < 1) {
                holder.button.setVisibility(View.VISIBLE);
                holder.numberButton.setVisibility(View.GONE);
                editor1.clear();
                editor1.putString("elev", String.valueOf(newValue));
                editor1.apply();
                hidebtns.put(position,false );
                setnums.put(position,true);
                if (remover != null)
                {
                    remover.onRemove(position);
                }
                editor.clear();
                editor.apply();
                }

            if (newValue > 0) {
                editor.putString("newv", String.valueOf(newValue));
                editor.apply();
                editor1.clear();
                editor1.putString("elev", String.valueOf(newValue));
                editor1.apply();
                hidebtns.put(position,true);
                setnums.put(position,true);
                if(listener!=null)
                {
                    listener.onClick(position);
                }
            }
        });


    }
    }

Answer 1

如您所知，recyclerview 回收 View 以获得更好的性能。在观看代码时，您的 View 持有者 View 中的可见性会发生一些变化。

尝试一下这个解决方案。在 onBindViewHolder 下添加条件，使用相应的 String.valueOf(holder.numberButton.getNumber()) 检查您的首选项中的数据，并切换 holder.buttonholder.numberButton 的可见性查看。