ListView中的OnClickListener更新列表中的不同項目

Question

我在我的Fragment類中有ListView。這ListView有三個項目，ListView中的每個項目有兩個按鈕，btn +和btn-，以及一個TextView。

當我運行應用程序並在第一項中按btn +時，我不知道爲什麼，但最後一項中的TextView的值遞增。當我點擊btn-時，最後的TextView的值也會減少。

這是我的適配器：

package com.example.lie_.tablayout; 

import android.content.Context; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.BaseAdapter; 
import android.widget.ImageView; 
import android.widget.RatingBar; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.iarcuschin.simpleratingbar.SimpleRatingBar; 

import java.util.ArrayList; 

/** 
* Created by Ali on 17/08/2017. 
*/ 

public class MenuListPizzaAdapter extends BaseAdapter { 

    View vv; 
    TextView txtOrderNUM; 
    int counter=0; 

    private ArrayList <BuyMenuListPizza> BuyMenuListPizza; 
    private Context C; 

    public MenuListPizzaAdapter(Context c, ArrayList<BuyMenuListPizza> BuyMenuListPizza) { 
     this.BuyMenuListPizza = BuyMenuListPizza; 
     this.C=c; 
    } 

    @Override 
    public int getCount() { 
     return BuyMenuListPizza.size(); 
    } 

    @Override 
    public Object getItem(int i) { 
     return BuyMenuListPizza.get(i); 
    } 

    @Override 
    public long getItemId(int i) { 
     return i; 
    } 

    @Override 
    public View getView(final int position, View View, ViewGroup parent) 
    { 
     if (View == null) { 
      View = LayoutInflater.from(C).inflate(R.layout.buy_menu_list_pizza, parent, false); 
     } 

     TextView txtitemname = (TextView)View.findViewById(R.id.txtitemname); 
     SimpleRatingBar ratingbar = (SimpleRatingBar)View.findViewById(R.id.ratingbar); 
     final TextView txtitemcontent = (TextView)View.findViewById(R.id.txtitemcontent); 
     ImageView btnOrderADD = (ImageView)View.findViewById(R.id.btnOrderADD); 
     ImageView btnOrderDEL = (ImageView)View.findViewById(R.id.btnOrderDEL); 
     ImageView imgitem = (ImageView)View.findViewById(R.id.imgitem); 

     txtitemname.setText(BuyMenuListPizza.get(position).getName()); 
     ratingbar.setRating(BuyMenuListPizza.get(position).getRating()); 
     txtitemcontent.setText(BuyMenuListPizza.get(position).getContents()); 
     btnOrderADD.setImageResource(BuyMenuListPizza.get(position).getImgplus()); 
     btnOrderDEL.setImageResource(BuyMenuListPizza.get(position).getImgminues()); 
     imgitem.setImageResource(BuyMenuListPizza.get(position).getImgpizza()); 

     Toast.makeText(parent.getContext(),"Position getView : " + position,Toast.LENGTH_LONG).show(); 

     txtOrderNUM = (TextView)View.findViewById(R.id.txtOrderNUM); 
     txtOrderNUM.setText(BuyMenuListPizza.get(position).getCount() + ""); 

     btnOrderADD.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 
       int coun= BuyMenuListPizza.get(position).getCount(); 
       coun++; 
       txtOrderNUM.setText(coun+""); 
      } 
     }); 

     btnOrderDEL.setOnClickListener(new View.OnClickListener() { 
      @Override 
      public void onClick(View v) { 

       int coun= BuyMenuListPizza.get(position).getCount(); 
       coun--; 
       if(coun<0){ 
       } 
       else 
        txtOrderNUM.setText(coun+""); 
      } 
     }); 

     return View; 
    } 
} 

這是我的片段類：

public class Pizza extends Fragment { 
    TextView txtOrderNUM; 

    ArrayList<BuyMenuListPizza> arrayList; 
    ListView MenuPizzaList; 
    Context c; 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 

     View android = inflater.inflate(R.layout.pizza, container, false); 

     MenuPizzaList = (ListView)android.findViewById(R.id.MenuPizzaList); 
     arrayList=BuyMenuListPizzaCollection.getBuyMenuListPizza(); 
     MenuPizzaList.setAdapter(new MenuListPizzaAdapter(container.getContext(),arrayList)); 

// MenuPizzaList.setOnItemClickListener(new oncitemlicklistener()); 

    return android; 
} 

請不要說去xml文件和更改屬性，因爲我改變了我的代碼運行和OnClickListener是好的，但它不能正常工作。

我搜索了幾天以上，但沒有找到任何東西。

Answer 1

我發現問題解決使用：notyficationitemselected（getadapterposition）