在android

Question

这是我的适配器类我在android中的初学者，我想在listview中使用视图持有者添加多个textview，并且还应该有一个按钮

   package com.example.navigationdrawerexample;

    /**
     * Created by Dev2 on 12/7/2015.
     */

import java.util.ArrayList;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.TextView;

public class listadapterfdgdfg extends ArrayAdapter<String> {
    customButtonListener customListner;

    public interface customButtonListener {
        public void onButtonClickListner(int position,String value);
    }

    public void setCustomButtonListner(customButtonListener listener)
    {
        this.customListner = listener;
    }

    private Context context;

    private ArrayList<String> data = new ArrayList<String>();
    private ArrayList<String> Price = new ArrayList<String>();

    public listadapterfdgdfg(Context context, ArrayList<String> dataItem,ArrayList<String> price) {
        super(context, R.layout.child_row,dataItem);
        this.data = dataItem;
        this.Price=price;
        this.context = context;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        ViewHolder viewHolder2;
        if (convertView == null) {
            LayoutInflater inflater = LayoutInflater.from(context);
            convertView = inflater.inflate(R.layout.child_row, null);
            viewHolder = new ViewHolder();
            viewHolder2 = new ViewHolder();
            viewHolder.text = (TextView) convertView.findViewById(R.id.childTextView);
            viewHolder.prices =(TextView)convertView.findViewById(R.id.pricemine);

            //viewHolder2.prices= (TextView)convertView.findViewById(R.id.pricemine);
            viewHolder.button = (Button) convertView.findViewById(R.id.childButton);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
            viewHolder2 = (ViewHolder) convertView.getTag();
        }
        final String temp = getItem(position);

        viewHolder.text.setText(temp);

        final String temp1 =getItem(position);

        viewHolder.prices.setText(temp1);

        viewHolder.button.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                if (customListner != null) {
                    customListner.onButtonClickListner(position,temp);
                }
            }
        });

        return convertView;
    }

    public class ViewHolder {
        TextView text;
        TextView prices;
        Button button;
    }
}

在这里我以这种方式称呼这个课程

我在xml中添加价格的textview也在listadapter的构造函数中添加价格数组列表它在screeen中显示dataitems的数据  它显示相同的项目名称作为价格，我知道问题，但不知道如何解决这个问题 问题出在这里

public listadapterfdgdfg(Context context, ArrayList<String>   dataItem,ArrayList<String> price) {
        super(context, R.layout.child_row,dataItem);
        this.data = dataItem;
        this.Price=price;
        this.context = context;
    }

它显示的价格好像我声明它显示的价格数据，就好像我声明了itemlis数据

要添加商品价格

Answer 1

这里是我告诉你的完整答案：

1-数据的模型类

public class MyData{
    private String name = "";
    private double price = 0;

    //Setters and Getters...
}

2-适配器类，重命名为MyDataListAdapter

public class MyDataListAdapter extends ArrayAdapter<MyData> {
    private ArrayList<MyData> data = null;

    public MyDataListAdapter(Context context, ArrayList<MyData> dataList) {
        super(context, R.layout.child_row,dataList);
        this.data = dataList;
        this.context = context;
    }//constructor


    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null) {
            LayoutInflater inflater = LayoutInflater.from(context);
            convertView = inflater.inflate(R.layout.child_row, null);
            viewHolder = new ViewHolder();
            viewHolder.text = (TextView) convertView.findViewById(R.id.childTextView);
            viewHolder.prices =(TextView)convertView.findViewById(R.id.pricemine);
            viewHolder.button = (Button) convertView.findViewById(R.id.childButton);
            convertView.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) convertView.getTag();
        }

        //you can use data.get(position) too
        final MyData myDataItem = getItem(position);

        viewHolder.text.setText(myDataItem.getName());
        viewHolder.prices.setText(myDataItem.getPrice());
        viewHolder.button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                if (customListner != null) {
                    //pass name or price, or pass myDataItem object and handle it at onButtonClickListner()
                    customListner.onButtonClickListner(position,myDataItem.getName());
                }

            }
        });

        return convertView;
    }

    public class ViewHolder {
        TextView text;
        TextView prices;
        Button button;
    }
}//MyDataListAdapter

现在从活动或任何地方，实例化适配器

ArrayList<MyData> alldata = new ArrayList();
alldata.add(dataItem1); //.. add all items needed
MyDataListAdapter adapter = new MyDataListAdapter (context, alldata);
mListView.setAdapter(adapter);