Android ExpandableListview все дочерние элементы в каждой группе

Question

Я создаю ExpandableListview в Android. Я использую пользовательский адаптер, но мой дочерний элемент находится в каждой отдельной группе.

Результат, который я хочу:

[ First ]  [ Second ]  [ Third ] 

- AAA   - DDD   - GGG 
- BBB   - EEE   - HHH 
- CCC   - FFF   - III 

(«Первый», «Второй» и «Третий» является расширяемой имя списка групп/и другой ребенок имя элемента)

Но Мой список показать, как:

[ First ]  [ Second ]  [ Third ] 

- AAA   - AAA   - AAA 
- BBB   - BBB   - BBB 
- CCC   - CCC   - CCC 
- DDD   - DDD   - DDD 
- EEE   - EEE   - EEE 
- FFF   - FFF   - FFF 
- GGG   - GGG   - GGG 
- HHH   - HHH   - HHH 
- III   - III   - III 

Скриншот: (я изменил название группы)

Это мой код:

//ExpandableList 
private ExpandableListView mPastMedalList; 

//ListView Adapter 
private ArrayList<String> mGroupList = new ArrayList<>(); 
private ArrayList<Object> mChildList = null; 
private ArrayList<String> mChildListContent = new ArrayList<>(); 

private void setList(){ 
    setGroupData(); 
    setChildGroupData(); 

    mPastMedalList.setAdapter(new BaseExpandableAdapter(getActivity(), mGroupList, mChildList)); 
    mPastMedalList.expandGroup(0); //default expand 

    //click event 
    mPastMedalList.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() { 
     @Override 
     public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) { 
      setExpandableListViewHeight(parent, groupPosition); 
      return false; 
     } 
    }); 
} 

private void setGroupData() { 
    mGroupList.add("First"); 
    mGroupList.add("Second"); 
    mGroupList.add("Third"); 
} 

private void setChildGroupData() { 
    mChildList = new ArrayList<>(); 
    mChildListContent.add("AAA"); 
    mChildListContent.add("BBB"); 
    mChildListContent.add("CCC"); 
    mChildList.add(mChildListContent); 

    mChildList = new ArrayList<>(); 
    mChildListContent.add("DDD"); 
    mChildListContent.add("EEE"); 
    mChildListContent.add("FFF"); 
    mChildList.add(mChildListContent); 

    mChildList = new ArrayList<>(); 
    mChildListContent.add("GGG"); 
    mChildListContent.add("HHH"); 
    mChildListContent.add("III"); 
    mChildList.add(mChildListContent); 
} 

и мой источник адаптер:

public class BaseExpandableAdapter extends BaseExpandableListAdapter { 
    private ArrayList<String> groupList = null; 
    private ArrayList<Object> childList = null; 
    private LayoutInflater inflater = null; 
    private ViewHolder viewHolder = null; 

    public BaseExpandableAdapter(Context c, ArrayList<String> groupList, ArrayList<Object> childList){ 
     super(); 
     this.inflater = LayoutInflater.from(c); 
     this.groupList = groupList; 
     this.childList = childList; 
    } 

    //return group size 
    @Override 
    public int getGroupCount() { 
     return groupList.size(); 
    } 

    //return child view size 
    @Override 
    public int getChildrenCount(int groupPosition) { 
     return ((ArrayList<String>) childList.get(groupPosition)).size(); 
    } 

    //return group position 
    @Override 
    public String getGroup(int groupPosition) { 
     return groupList.get(groupPosition); 
    } 

    //return child view 
    @Override 
    public String getChild(int groupPosition, int childPosition) { 
     return ((ArrayList<String>)childList.get(groupPosition)).get(childPosition); 
    } 

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

    //return child view id 
    @Override 
    public long getChildId(int groupPosition, int childPosition) { 
     return childPosition; 
    } 

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

    //each group view ROW 
    @Override 
    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { 
     View view = convertView; 

     if(view == null){ 
      viewHolder = new ViewHolder(); 
      view = inflater.inflate(R.layout.rio2016_sports_olympic_header, null); 
      viewHolder.header = (TextView) view.findViewById(R.id.sports_olympic_list_header); 
      viewHolder.drawer = (ImageView) view.findViewById(R.id.sports_olympic_list_drawer); 
      view.setTag(viewHolder); 
     } else { 
      viewHolder = (ViewHolder)view.getTag(); 
     } 

     //change icon when open or close 
     if(isExpanded){ //open 
      viewHolder.drawer.setImageResource(R.drawable.rio2016_sports_olympic_detail_drawer_up); 
     }else{ //close 
      viewHolder.drawer.setImageResource(R.drawable.rio2016_sports_olympic_detail_drawer_down); 
     } 

     viewHolder.header.setText(getGroup(groupPosition)); 

     return view; 
    } 

    //return child view 
    @Override 
    public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { 
     View view = convertView; 

     if(view == null){ 
      viewHolder = new ViewHolder(); 
      view = inflater.inflate(R.layout.rio2016_sports_olympic_item, null); 
      viewHolder.medal = (ImageView) view.findViewById(R.id.sports_olympic_list_medal); 
      viewHolder.flag = (ImageView) view.findViewById(R.id.sports_olympic_list_flag); 
      viewHolder.countries = (TextView) view.findViewById(R.id.sports_olympic_list_countries); 
      viewHolder.name = (TextView) view.findViewById(R.id.sports_olympic_list_name); 
      view.setTag(viewHolder); 
     } else { 
      viewHolder = (ViewHolder)view.getTag(); 
     } 

     viewHolder.medal.setImageResource(R.drawable.rio2016_sports_olympic_detail_medal); 
     viewHolder.flag.setImageResource(R.drawable.rio2016_sports_olympic_detail_flag); 
     viewHolder.countries.setText("KOR"); 
     viewHolder.name.setText(getChild(groupPosition, childPosition)); 

     return view; 
    } 

    // 
    @Override 
    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     return true; 
    } 

    class ViewHolder { 
     //header 
     private TextView header; 
     private ImageView drawer; 

     //item 
     private ImageView medal; 
     private ImageView flag; 
     private TextView countries; 
     private TextView name; 
    } 
} 

Интересно, почему не каждый ребенок пункт в правильной каждой группе? Пожалуйста, помогите мне! Спасибо, все :)

Answer 1

Внутри вашей функции setChildGroupData() вы используете одну и ту же переменную mChildListContent вместо создания новой для каждого из трех. Вы должны, вероятно, сделать это ->

mChildList = new ArrayList<>(); 
    mChildListContent = new ArrayList<>(); 
    mChildListContent.add("AAA"); 
    mChildListContent.add("BBB"); 
    mChildListContent.add("CCC"); 
    mChildList.add(mChildListContent); 

    mChildList = new ArrayList<>(); 
    mChildListContent = new ArrayList<>(); 
    mChildListContent.add("DDD"); 
    mChildListContent.add("EEE"); 
    mChildListContent.add("FFF"); 
    mChildList.add(mChildListContent); 

    mChildList = new ArrayList<>(); 
    mChildListContent = new ArrayList<>(); 
    mChildListContent.add("GGG"); 
    mChildListContent.add("HHH"); 
    mChildListContent.add("III"); 
    mChildList.add(mChildListContent);