ListAdapter内の特定の子ボタンの参照を取得する方法

Question

私はBaseExpandableListAdapterに拡張されたクラスを持っていて、各グループにボタンを作成しました。合計6つのグループがあります。 getChildViewのアダプタでは、ボタンのテキストを特定の位置（たとえば2）に変更したいと考えています。

私はタグ機能について聞いたが、私は私の場合のためにそれを使用する方法がわかりません。 specific childのbutton textをどのように変更することができますか？

@Override 
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { 
    final int position = groupPosition + 1; 

    switch (position) { 
     case 1: 
      allQuestions = MyConstants.QUESTIONS_1; 
      break; 
     case 2: 
      allQuestions = MyConstants.QUESTIONS_2; 
      break; 
     case 3: 
      allQuestions = MyConstants.QUESTIONS_3; 
      break; 
     case 4: 
      allQuestions = MyConstants.QUESTIONS_4; 
      break; 
     case 5: 
      allQuestions = MyConstants.QUESTIONS_5; 
      break; 
     case 6: 
      allQuestions = MyConstants.QUESTIONS_6; 
      break; 
    } 

    int correctQuestions = MyDatabase.getInstance(context).getCorrectQuestions(position).getCount(); 
    int wrongQuestions = MyDatabase.getInstance(context).getWrongQuestions(position).getCount(); 
    int openQuestions = allQuestions - correctQuestions - wrongQuestions; 

    if (convertView == null) { 
     LayoutInflater infalInflater = (LayoutInflater) this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     convertView = infalInflater.inflate(R.layout.list_item, null); 
    } 

    tv_questionOpenResult = (TextView) convertView.findViewById(R.id.tv_questionOpenResult); 
    tv_correctAmountResult = (TextView) convertView.findViewById(R.id.tv_correctAmountResult); 
    tv_wrongAmountResult = (TextView) convertView.findViewById(R.id.tv_wrongAmountResult); 

    bt_openQuestions = (Button) convertView.findViewById(R.id.bt_openQuestions); 
    bt_openQuestions.setTag(position); 
    bt_correctQuestions = (Button) convertView.findViewById(R.id.bt_correctQuestions); 
    bt_wrongQuestions = (Button) convertView.findViewById(R.id.bt_wrongQuestions); 


    if (allQuestions == correctQuestions) { 
     bt_openQuestions.setEnabled(true); 
     bt_openQuestions.setText("Test"); 
     allCorrect = true; 
    } 

}

Answer 1

package com.example.adapter; 

import android.app.Dialog; 
import android.app.ProgressDialog; 
import android.content.Context; 

import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 

import android.widget.BaseExpandableListAdapter; 

import android.widget.CheckBox; 
import android.widget.CompoundButton; 
import android.widget.TextView; 



import com.example.R; 
import com.example.model.filter_Item; 


import org.json.JSONObject; 


import java.util.ArrayList; 
import java.util.HashMap; 


public class Filter_ExpandableAdapter extends BaseExpandableListAdapter { 
    private Context _context; 
    ArrayList<String> _listDataHeader; 




    HashMap<Integer, ArrayList<filter_Item>> list_child = new HashMap<>(); 
    private HashMap<Integer, boolean[]> mChildCheckStates; 
    public static ArrayList<filter_Item> selected_list_child = new ArrayList<>(); 
    private ChildViewHolder childViewHolder; 



    public Filter_ExpandableAdapter(Context _context, ArrayList<String> _listDataHeader, HashMap<Integer, ArrayList<filter_Item>> list_child) { 
     this._context = _context; 
     this._listDataHeader = _listDataHeader; 
     this.list_child = list_child; 
     mChildCheckStates = new HashMap<Integer, boolean[]>(); 

    } 

    @Override 
    public int getGroupCount() { 
     return this._listDataHeader.size(); 
    } 

    @Override 
    public int getChildrenCount(int groupPosition) { 
     return list_child.get(groupPosition).size(); 

    } 

    @Override 
    public Object getGroup(int groupPosition) { 
     return this._listDataHeader.get(groupPosition); 
    } 

    @Override 
    public Object getChild(int groupPosition, int childPosition) { 
     return list_child.get(groupPosition).get(childPosition); 


    } 


    @Override 
    public long getGroupId(int groupPosition) { 
     return groupPosition; 
    } 

    @Override 
    public long getChildId(int groupPosition, int childPosition) { 
     return childPosition; 
    } 

    @Override 
    public boolean hasStableIds() { 
     return false; 
    } 

    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { 

     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.header_row_filter, null); 
     } 
     TextView lblListHeader = (TextView) convertView.findViewById(R.id.filter_name); 
     lblListHeader.setText(_listDataHeader.get(groupPosition).toString()); 

     return convertView; 
    } 


    @Override 
    public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { 

     final int mGroupPosition = groupPosition; 
     final int mChildPosition = childPosition; 


     if (convertView == null) { 
      LayoutInflater infalInflater = (LayoutInflater) this._context 
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      convertView = infalInflater.inflate(R.layout.child_row_filter, null); 
      childViewHolder = new ChildViewHolder(); 
      childViewHolder.select_item = (CheckBox) convertView.findViewById(R.id.select_checkbox); 
      convertView.setTag(R.layout.child_row_filter, childViewHolder); 
     } else { 
      childViewHolder = (ChildViewHolder) convertView.getTag(R.layout.child_row_filter); 
     } 

     childViewHolder.select_item.setText("" + list_child.get(groupPosition).get(childPosition).getLc_sub_name()); 
     childViewHolder.select_item.setOnCheckedChangeListener(null); 


     if (mChildCheckStates.containsKey(mGroupPosition)) { 
      boolean getChecked[] = mChildCheckStates.get(mGroupPosition); 
      childViewHolder.select_item.setChecked(getChecked[mChildPosition]); 

     } 
     else { 
      boolean getChecked[] = new boolean[getChildrenCount(mGroupPosition)]; 
      mChildCheckStates.put(mGroupPosition, getChecked); 
      childViewHolder.select_item.setChecked(false); 
     } 


     childViewHolder.select_item.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { 

      @Override 
      public void onCheckedChanged(CompoundButton buttonView, 
             boolean isChecked) { 
       if (isChecked) { 
        boolean getChecked[] = mChildCheckStates.get(mGroupPosition); 
        getChecked[mChildPosition] = isChecked; 
        mChildCheckStates.put(mGroupPosition, getChecked); 
        selected_list_child.add(list_child.get(groupPosition).get(childPosition)); 
       } 
       else 
       { 
        boolean getChecked[] = mChildCheckStates.get(mGroupPosition); 
        getChecked[mChildPosition] = isChecked; 
        mChildCheckStates.put(mGroupPosition, getChecked); 
        selected_list_child.remove(list_child.get(groupPosition).get(childPosition)); 
       } 
       notifyDataSetChanged(); 
      } 
     }); 

     return convertView; 
    } 

    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return true; 
    } 
    private class ChildViewHolder { 
     CheckBox select_item; 

    } 




} 

...このコードを試してみてください