Question

我正在研究使用排球获取数据并使用recyclerview.i在Feed中显示的应用程序。每张卡片中都有一个按钮，点击后会计算点击次数并将其显示在该特定卡片的文本视图中（如instagram像按钮）。现在我希望点击的值也可以存储在与我的mysql数据库中卡中的其他项相同的行中的列（喜欢）中，当单击该按钮时。这是我尝试过但我没有得到它。任何人都可以帮忙吗？这是我的代码......

package net.simplifiedcoding.myfeed;
import android.content.Context;
import android.media.Image;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.NetworkImageView;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.w3c.dom.Text;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * Created by Belal on 11/9/2015.
 */
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder> {
    //Imageloader to load image
    private ImageLoader imageLoader;
    private Context context;

    //List to store all superheroes
    List<SuperHero> superHeroes;

    //Constructor of this class
    public CardAdapter(List<SuperHero> superHeroes, Context context) {
        super();
        //Getting all superheroes
        this.superHeroes = superHeroes;
        this.context = context;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.superheroes_list, parent, false);
        ViewHolder viewHolder = new ViewHolder(v);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder( final ViewHolder holder,    final int position) {
        //Getting the particular item from the list
          final SuperHero superHero = superHeroes.get(position);

        //Loading image from url
        imageLoader = CustomVolleyRequest.getInstance(context).getImageLoader();
        imageLoader.get(superHero.getImageUrl(), ImageLoader.getImageListener(holder.imageView, R.drawable.image, android.R.drawable.ic_dialog_alert));

        //Showing data on the views
        holder.imageView.setImageUrl(superHero.getImageUrl(), imageLoader);
        holder.textViewName.setText(superHero.getName());
        holder.textViewPublisher.setText(superHero.getPublisher());
        holder.textViewLikes.setText(superHero.getLikes());



        holder.custom_button.setOnClickListener(new View.OnClickListener() {
            int count;


            @Override
            public void onClick(View v) {

                count = 0;

                superHeroes.get(position).setCount(superHeroes.get(position).getCount() + 1);
                holder.txtCount.setText(superHeroes.get(position).getCount() + "");


                final String url = "http://10.0.2.2/likes.php";
                final String KEY_LIKES = "likes";
                final String likes = holder.txtCount.setText(superHeroes.get(position).getCount() + "".toString().trim();


                StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
                        new Response.Listener<String>() {
                            @Override
                            public void onResponse(String response) {

                            }
                        },
                        new Response.ErrorListener() {
                            @Override
                            public void onErrorResponse(VolleyError error) {

                            }
                        }){
                    @Override
                    protected Map<String,String> getParams(){
                        Map<String,String> params = new HashMap<String, String>();


                        params.put(KEY_LIKES,likes);


                        return params;
                    }
                };
                RequestQueue requestQueue = Volley.newRequestQueue(context);
                requestQueue.add(stringRequest);
            }



        });



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

    class ViewHolder extends RecyclerView.ViewHolder {
        //Views
        public NetworkImageView imageView;
        public TextView textViewName;
        public TextView textViewPublisher;
        public TextView textViewLikes;
        public TextView txtCount;
        public ImageButton custom_button;

        //Initializing Views
        public ViewHolder(View itemView) {
            super(itemView);
            imageView = (NetworkImageView) itemView.findViewById(R.id.imageViewHero);
            textViewName = (TextView) itemView.findViewById(R.id.textViewName);
            textViewPublisher = (TextView) itemView.findViewById(R.id.textViewPublisher);
            textViewLikes = (TextView) itemView.findViewById(R.id.textViewlikes);
            txtCount = (TextView) itemView.findViewById(R.id.txtCount);
            custom_button = (ImageButton) itemView.findViewById(R.id.custom_button);
        }
    }
}

Answer 1

你必须在多用户情况下将特定的卡（数据）ID发送到服务器b'z它可能会发生许多用户喜欢相同的情况吗？

另一方面，在服务器端，当您获得请求从db获取计数并添加一个并将其发送到您的设备并将其存储到数据库中并且当您收到响应时显示为count to user。

使用volley按钮在recyclelerview中将特定卡中的数据存储在mysql中

1 个答案: