ExpandableListView.getPackedPositionGroup은 항상 0을 반환합니다.

Question

문맥 메뉴가있는 ExpandableListView가 있습니다. 그것은 내가 얼마나 많은 그룹 항목을 중요하지 않습니다, 항상 0을 반환

내 코드 :

@Override 
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) { 
    super.onCreateContextMenu(menu, v, menuInfo); 

    ExpandableListView.ExpandableListContextMenuInfo info = (ExpandableListView.ExpandableListContextMenuInfo) menuInfo; 

    int group = ExpandableListView.getPackedPositionGroup((int) info.packedPosition); 
    int type = ExpandableListView.getPackedPositionType((int) info.packedPosition); 
    int child = ExpandableListView.getPackedPositionChild((int) info.packedPosition); 

    Log.d("Value ConTEXT: " + String.valueOf(group), String.valueOf(child) + " GROUP COUNT " + getExpandableListAdapter().getGroupCount()); 
    menu.setHeaderTitle(((Person) dAdapter.getGroup(group)).getName()); 
    // menu.add(0, 0, 0, "Geschiedenis verwijderen"); 
    menu.add(1, 1, 1, "Verwijderen uit lijst"); 
} 

그리고 내 사용자 지정 기본 목록 어댑터 :

public class DrinkActionAdapter extends BaseExpandableListAdapter { 

    Activity context; 
    ArrayList<Person> personsGroup; 
    ArrayList<Person> personsChild; 

    public DrinkActionAdapter(Activity context, ArrayList<Person> personsGroup, 
      ArrayList<Person> personsChild) { 
     this.context = context; 
     this.personsGroup = personsGroup; 
     this.personsChild = personsChild; 
    } 

    public void addPerson(Person p) { 
     personsGroup.add(p); 
     personsChild.add(p); 
     for (Person pp : personsGroup) { 
      Log.d(pp.getName(), pp.getName()); 
     } 
    } 

    public Object getChild(int groupPosition, int childPosition) { 
     Log.d("GetChild" + String.valueOf(groupPosition), String.valueOf(childPosition)); 
     return personsGroup.get(childPosition); 
    } 

    public long getChildId(int groupPosition, int childPosition) { 
     Log.d("GetChildID" + String.valueOf(groupPosition), String.valueOf(childPosition)); 
     return childPosition; 
    } 

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

     Person p = personsChild.get(groupPosition); 
     View v = convertView; 
     Log.d(p.getName(), p.getName() + "CHILD"); 
     if (v == null) { 

      LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      v = mInflater.inflate(R.layout.drink_action_child, null); 
     } 
     if (personsChild.size() != 0) { 
      TextView lbFavoriteDrink = (TextView) v.findViewById(R.id.drink_action_child_lb_favorite_drink); 
      if (p.getFavoriteDrink() != null) { 
       lbFavoriteDrink.setText(p.getFavoriteDrink().getName()); 
      } else { 
       lbFavoriteDrink.setText("Nog niks gedronken."); 
      } 
      TextView lbCost = (TextView) v.findViewById(R.id.drink_action_child_lb_cost); 
      lbCost.setText(String.valueOf(p.getTotalMoneySpent())); 

      TextView lbAmount = (TextView) v.findViewById(R.id.drink_action_child_lb_amount); 
      lbAmount.setText(String.valueOf(p.getTotalAmountOfDrinks())); 

      TextView lbKcal = (TextView) v.findViewById(R.id.drink_action_child_lb_kcal); 
      lbKcal.setText(String.valueOf(p.getTotalKcal())); 

      TextView lbPunishment = (TextView) v.findViewById(R.id.drink_action_child_lb_boete); 
      lbPunishment.setText(p.getPunishment()); 

      TextView lbWeightPutOn = (TextView) v.findViewById(R.id.drink_action_child_lb_weight); 
      lbWeightPutOn.setText(String.valueOf(p.getWeightPutOn())); 

      TextView lbLiters = (TextView) v.findViewById(R.id.drink_action_child_lb_liter); 
      lbLiters.setText(String.valueOf(p.getAmountOfLiters())); 

      TextView lbTimeSinceLastDrink = (TextView) v.findViewById(R.id.drink_action_child_lb_time_since_last_drink); 
      lbTimeSinceLastDrink.setText(String.valueOf(p.getTimeSinceLast()[2]) + ":" + String.valueOf(p.getTimeSinceLast()[1]) + ":" + String.valueOf(p.getTimeSinceLast()[0])); 

     } else { 
      // WHAT TO DO IF NO PROFILES 
     } 

     return v; 
    } 

    public int getChildrenCount(int groupPosition) { 
     Log.d("GetChildrenCount" + String.valueOf(groupPosition), String.valueOf(groupPosition)); 
     return 1; 
     // return persons.size(); 
    } 

    public Object getGroup(int groupPosition) { 
     Log.d(String.valueOf(groupPosition), String.valueOf(groupPosition) + personsGroup.get(groupPosition).getName()); 
     return personsGroup.get(groupPosition); 
    } 

    public int getGroupCount() { 

     return personsGroup.size(); 
    } 

    public long getGroupId(int groupPosition) { 
     Log.d(String.valueOf(groupPosition) + "GetGroupId", String.valueOf(groupPosition)); 
     return groupPosition; 
    } 

    public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { 
     Person p = personsGroup.get(groupPosition); 
     View v = convertView; 
     Log.d(groupPosition + " " + p.getName(), p.getName() + "GROUP"); 
     if (v == null) { 

      LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
      v = mInflater.inflate(R.layout.drink_action_item, null); 

     } 
     if (personsGroup.size() != 0) { 

      TextView lbName = (TextView) v.findViewById(R.id.drink_action_lb_name); 
      TextView lbAlcohol = (TextView) v.findViewById(R.id.drink_action_info_current_alcohol); 

      ImageView btnDrink = (ImageView) v.findViewById(R.id.drink_action_item_btn_drink); 
      btnDrink.setTag(p); 

      lbName.setText(p.getName()); 
      lbAlcohol.setText(String.valueOf(p.getCurrentAlcoholLevel())); 

     } else { 
      // WHAT TO DO IF NO PROFILES 
     } 

     return v; 
    } 

    public boolean hasStableIds() { 
     // TODO Auto-generated method stub 
     return true; 
    } 

    public boolean isChildSelectable(int groupPosition, int childPosition) { 
     // TODO Auto-generated method stub 
     return true; 
    } 

} 

내가에 longclick 때마다 항목을 선택하면 항상 첫 번째 항목이 선택됩니다.

Answer 1

시도는 단지 내가 아이를 longclick 할 수 있으며 그에서 NullPointerException이주는 getChildView에서 contextMenu를() 단지이 코드 ((Activity) context).registerForContextMenu(v);