Android ExpandableListView Gruppennummer beim Schließen der Gruppe

Question

Ich möchte onclick auf Gruppen einer benutzerdefinierten ExpandableListView behandeln. Mit diesem Code erhalte ich die Nummer der Gruppe, wenn ich darauf klicke:

exList.setOnGroupClickListener(new OnGroupClickListener() { 

    @Override 
    public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) { 

     Log.i("group position", groupPosition + ""); 
     return false; 
    } 
}); 

Ich füge den vereinfachten Code hinzu. Ich hoffe, Sie können herausfinden, was das Problem sein könnte:

public class ProductLists extends Activity { 
    private static final String G_TEXT = "G_TEXT"; 
    private static final String C_TITLE = "C_TITLE"; 
    private static final String C_TEXT = "C_TEXT"; 
    private static final String C_CB = "C_CB"; 

    List<Map<String, String>> groupData = new ArrayList<Map<String, String>>();  
    List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>(); 

    List<Map<String, Boolean>> groupCheckBox = new ArrayList<Map<String,Boolean>>(); 
    List<List<Map<String, Boolean>>> childCheckBox = new ArrayList<List<Map<String,Boolean>>>(); 
    String loadedexpanded; 
    String upperString; 
    int number, k_num, k_num2; 

    String etext_newitem; 
    EditText et_newitem; 

    String CheckedItem; 
    String CheckedItems; 
    ExpandBaseAdapter adapter; 
    ExpandableListView exList; 

    HotOrNot info; 
    ArrayList<String> grpsfav = new ArrayList<String>(); 

    ArrayList<String> OftenUsedAll = new ArrayList<String>(); 
    ArrayList<String> OftenUsedID = new ArrayList<String>(); 
    ArrayList<String> OftenUsedName = new ArrayList<String>(); 
    ArrayList<String> OftenUsedNumber = new ArrayList<String>(); 

    Button sqlExp, sqlAdd; 
    ArrayList<String> PRLists = new ArrayList<String>(); 
    ArrayList<String> PRListsR = new ArrayList<String>(); 
    ArrayList<String> PRListsID = new ArrayList<String>(); 
    ArrayList<String> PRLists2 = new ArrayList<String>(); 
    ArrayList<String> todoItems = new ArrayList<String>(); 
    ArrayList<String> todoItemsID = new ArrayList<String>(); 
    ArrayList<String> todoItemsNAME = new ArrayList<String>(); 
    List<String> usable_chars = Arrays.asList(";", "'", "/", "\"", "%", "'\'", "$", "+", "-", "=", ":", "_"); 
    ArrayList<String> todoItemsTEMP = new ArrayList<String>(); 
    ArrayList<String> todoItemsIDTEMP = new ArrayList<String>(); 
    ArrayList<String> todoItemsNAMETEMP = new ArrayList<String>(); 

    ArrayList<String> inners = new ArrayList<String>(); 
    ArrayList result2; 
    Button sqlView, sqlValami; 
    Cursor c, c2; 
    String newlistname, modifiedlistname; 
    String loadedCapital, loadedshowhints; 
    SharedPreferences sharedPreferences; 

    ExpandableListView expandlist; 
    DisplayMetrics metrics; 
    int width; 

    List<String> selectionList = Arrays.asList("Rename", "Delete"); 
    List<String> selectionListA = Arrays.asList("Add item", "Rename group", "Delete group"); 
    CharSequence[] selectionList2, selectionList2A; 
    String rowIdtobemodified, rowIDtobedeleted; 
    int groupPosition; 
    int childPosition; 
    AlertDialog.Builder builder; 

    Dialog dialog_newitem, dialog_newgroup; 

    Dialog dialog_renamelist, dialog_deletelist; 
    EditText et_renamelist, et_deletelist; 
    //String etext_renamelist, etext_deletelist; 
    String renamelist_name, deletelist_name; 
    Spinner SPProductLists3, SPProductLists32; 
    Button btn_rename_save, btn_rename_cancel, btn_delete_save, btn_delete_cancel; 
    String allerrors_newproductlistdialog; 
    ArrayList<String> errors_addgroup = new ArrayList<String>(); 
    String selected_item_from_lists_torename, selected_item_from_lists_torename2; 
    List<String> nonusable_chars = Arrays.asList(";", "'", "/", "\"", "%", "'\'", "$", "+", "-", "=", ":", "_"); 

    int max; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.layout_productlists3); 

     exList = (ExpandableListView) findViewById(R.id.layoutExListView); 

     info = new HotOrNot(this); 
     info.open(); 
     //----------------------------query tables-------------------------------- 
     c = info.showAllTables(); 
     if (c.moveToFirst()) 
     { 
      do{ 
       PRLists.add(c.getString(0)); 

      }while (c.moveToNext()); 
     } 
     if (PRLists.size() >= 0) 
     { 
      for (int i=0; i<PRLists.size(); i++) 
      { 
       Log.d("PRLists(" + i + ")", PRLists.get(i) + ""); 
      } 
     } 

     //Declare base adapter 
     max = 0; 
     for (int i = 0; i < PRLists.size(); i++) 
     { 
      Map<String, String> curGroupMap = new HashMap<String, String>(); 
      groupData.add(curGroupMap); 
      curGroupMap.put(G_TEXT, PRLists.get(i).replaceAll("_", " ").substring(2, PRLists.get(i).replaceAll("_", " ").length())); 

      List<Map<String, String>> children = new ArrayList<Map<String, String>>(); 

      if (!PRLists.get(i).equals("PR_Often_Used")) 
      { 
       Log.i("tabla", PRLists.get(i) + ""); 
       c2 = info.getAllTitlesPRtables(PRLists.get(i)); 
       if (c2.moveToFirst()) 
       { 
        do{ 
         Map<String, String> curChildMap = new HashMap<String, String>(); 
         children.add(curChildMap); 
         curChildMap.put(C_TITLE, c2.getString(1).replaceAll("_", " ")); 
         curChildMap.put(C_TEXT, "Child "); 
        }while (c2.moveToNext()); 
       } 
      } 
      else 
      { 
       Log.i("tabla", "PR_OFTEN_USED"); 
       c2 = info.getAllTitlesOftenUsed("PR_Often_Used"); 
       if (c2.moveToFirst()) 
       { 
        do{ 
         Map<String, String> curChildMap = new HashMap<String, String>(); 
         children.add(curChildMap); 
         curChildMap.put(C_TITLE, c2.getString(1).replaceAll("_", " ")); 
         curChildMap.put(C_TEXT, "Child "); 
        }while (c2.moveToNext()); 
       } 
      } 

      if (children.size() > max) 
      { 
       max = children.size(); 
      } 
      childData.add(children); 
     } 
     info.close(); 

     for (int i = 0; i < PRLists.size(); i++) { 
      List<Map<String, Boolean>> childCB = new ArrayList<Map<String,Boolean>>(); 
      for (int j = 0; j < max; j++) { //leghosszabb belso lista merete 
       Map<String, Boolean> curCB = new HashMap<String, Boolean>(); 
       childCB.add(curCB); 
       curCB.put(C_CB, false); 
      } 
      childCheckBox.add(childCB); 
     } 

     adapter = new ExpandBaseAdapter(ProductLists.this, 
     groupData, childData, groupCheckBox, childCheckBox); 
     exList = (ExpandableListView) findViewById(R.id.layoutExListView); 
     exList.setAdapter(adapter); 
     exList.setGroupIndicator(null); 
     exList.setDivider(null); 

     int groupCount = adapter.getGroupCount(); 
     for (int i = 0; i < groupCount; i++) { 
      exList.collapseGroup(i); 
     } 

     exList.setOnChildClickListener(new OnChildClickListener() { 
      public boolean onChildClick(ExpandableListView parent, View v, 
        int groupPosition, int childPosition, long id) { 

       CheckBox checkBox = (CheckBox) v.findViewById(R.id.multiple_checkbox); 
       checkBox.toggle(); 
       if (childCheckBox.get(groupPosition).get(childPosition).get(C_CB)) //ha itt hiba akkor azert van m az adapterben akkor allitok cb statuszt ha van children, es mivel ha nincs akkor ez ertelmezhetetlen 
       { 
        childCheckBox.get(groupPosition).get(childPosition).put(C_CB, false); 
       } 
       else { 
        childCheckBox.get(groupPosition).get(childPosition).put(C_CB, true); 
       } 

       return false; 
      } 
     }); 

     exList.setOnGroupClickListener(new OnGroupClickListener() { 

      @Override 
      public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) { 

       //Log.i("group position", groupPosition + ""); 
       Toast.makeText(ProductLists.this, "group position" + groupPosition, Toast.LENGTH_SHORT).show(); 
       Log.i("PRLists.get(groupPosition)", PRLists.get(groupPosition)); 
       if (PRLists.get(groupPosition).equals("PR_Often_Used")) 
       { 

       } 
       return false; 
      } 
     }); 

     exList.setOnItemLongClickListener(new OnItemLongClickListener() { 
      @Override 
      public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) { 
       if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_CHILD) { 
        groupPosition = ExpandableListView.getPackedPositionGroup(id); 
        childPosition = ExpandableListView.getPackedPositionChild(id); 

        selectionList2 = selectionList.toArray(new CharSequence[selectionList.size()]); 
        builder = new AlertDialog.Builder(ProductLists.this); 
        builder.setItems(selectionList2, new DialogInterface.OnClickListener() 
        { 
         public void onClick(DialogInterface dialog, final int item) 
         { 
          if (selectionList2[item].equals("Rename")) 
          { 
          } 
          if (selectionList2[item].equals("Delete")) 
          { 
          } 
         } 
        }); 
        builder.show(); 
        return true; 
       } 
       else if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_GROUP) { 
        groupPosition = ExpandableListView.getPackedPositionGroup(id); 
        Log.i("tablagrp", PRLists.get(groupPosition) + "-" + groupPosition); 

        selectionList2A = selectionListA.toArray(new CharSequence[selectionListA.size()]); 
        builder = new AlertDialog.Builder(ProductLists.this); 
        builder.setItems(selectionList2A, new DialogInterface.OnClickListener() 
        { 
         public void onClick(DialogInterface dialog, final int item) 
         { 
          if (selectionList2A[item].equals("Add item")) 
          { 
          } 
          else if (selectionList2A[item].equals("Rename group")) 
          { 
          } 
          else if (selectionList2A[item].equals("Delete group")) 
          { 
          } 
         } 
        }); 
        builder.show(); 
        return true; 
       } 
       return false; 
      } 
     }); 
    } 


    public void refreshList() { 
     if (PRLists.size() >= 0) { 
      PRLists.clear(); 
      PRListsID.clear(); 
     } 
     groupData.clear(); 
     childData.clear(); 
     groupCheckBox.clear(); 
     childCheckBox.clear(); 

     info = new HotOrNot(this); 
     info.open(); 
     //----------------------------query tables-------------------------------- 
     c = info.showAllTables(); 
     if (c.moveToFirst()) 
     { 
      do{ 
       PRLists.add(c.getString(0)); 
      }while (c.moveToNext()); 
     } 
     if (PRLists.size() >= 0) 
     { 
      for (int i=0; i<PRLists.size(); i++) 
      { 
       Log.d("PRLists(" + i + ")", PRLists.get(i) + ""); 
      } 
     } 
     ExpandBaseAdapter adapter = new ExpandBaseAdapter(ProductLists.this, groupData, childData, groupCheckBox, childCheckBox); 
     ExpandableListView exList = (ExpandableListView) findViewById(R.id.layoutExListView); 
     exList.setAdapter(adapter); 
     max = 0; 
     for (int i = 0; i < PRLists.size(); i++) 
     { 
      Map<String, String> curGroupMap = new HashMap<String, String>(); 
      groupData.add(curGroupMap); 
      curGroupMap.put(G_TEXT, PRLists.get(i).replaceAll("_", " ").substring(2, PRLists.get(i).replaceAll("_", " ").length())); 
      ArrayList parent = new ArrayList(); 
      List<Map<String, String>> children = new ArrayList<Map<String, String>>(); 
      ArrayList child = new ArrayList(); 
      c2 = info.getAllTitlesPRtables(PRLists.get(i)); 
      if (c2.moveToFirst()) 
      { 
       do{ 
        Map<String, String> curChildMap = new HashMap<String, String>(); 
        children.add(curChildMap); 
        curChildMap.put(C_TITLE, c2.getString(1).replaceAll("_", " ")); 
        curChildMap.put(C_TEXT, "Child "); 
       }while (c2.moveToNext()); 
      } 
      if (children.size() > max) { 
       max = children.size(); 
      } 
      childData.add(children); 
     } 
     info.close(); 
     for (int i = 0; i < PRLists.size(); i++) { 
      List<Map<String, Boolean>> childCB = new ArrayList<Map<String,Boolean>>(); 
      for (int j = 0; j < max; j++) { 
       Map<String, Boolean> curCB = new HashMap<String, Boolean>(); 
       childCB.add(curCB); 
       curCB.put(C_CB, false); 
      } 
      childCheckBox.add(childCB); 
     } 

     adapter.notifyDataSetChanged(); 
     //expand only those groups that was expanded by the user 
     for (int i = 0; i < grpsfav.size(); i++) { 
      Log.i("grpsfav items", grpsfav.get(i)); 
      exList.expandGroup(Integer.valueOf(grpsfav.get(i))); 
     } 
    } 
    //the Holder class------------------------------------------------------------------- 

    static class ViewHolder { 
     TextView cTitle; 
     // TextView cText; 
     CheckBox checkBox; 
    } 

    public class ExpandBaseAdapter extends BaseExpandableListAdapter { 

     String loadedFontSize, loadedFontType, loadedConfDel, loadedshowhints; 
     SharedPreferences sharedPreferences; 

     Context mContext; 
     private static final String G_TEXT = "G_TEXT"; 
     //private static final String G_CB = "G_CB"; 
     private static final String C_TITLE = "C_TITLE"; 
     private static final String C_TEXT = "C_TEXT"; 
     private static final String C_CB = "C_CB"; 

     List<Map<String, String>> groupData = new ArrayList<Map<String, String>>(); 
     List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>(); 

     List<Map<String, Boolean>> groupCheckBox = new ArrayList<Map<String,Boolean>>(); 
     List<List<Map<String, Boolean>>> childCheckBox = new ArrayList<List<Map<String,Boolean>>>(); 

     private Context context; 

     ViewHolder holder; 

     public ExpandBaseAdapter(Context context, 
       List<Map<String, String>> groupData, List<List<Map<String, String>>> childData, 
       List<Map<String, Boolean>> groupCheckBox, List<List<Map<String, Boolean>>> childCheckBox) { 
      this.groupData = groupData; 
      this.childData = childData; 
      this.groupCheckBox = groupCheckBox; 
      this.childCheckBox = childCheckBox; 
      this.context = context; 
      mContext = context; 
     } 

     public View getGroupView(int groupPosition, boolean isExpanded, 
       View convertView, ViewGroup parent) { 
      View view = convertView; 
      if (view == null) { 
       LayoutInflater inflater = (LayoutInflater) 
        context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
       view = inflater.inflate(R.layout.groupitem, null); 
      } 
      TextView title = (TextView) view.findViewById(R.id.groupText); 
      title.setText(getGroup(groupPosition).toString()); 
      ImageView image = (ImageView) view.findViewById(R.id.groupBox); 
      if (isExpanded) { 
       image.setBackgroundResource(R.drawable.expander_ic_maximized); 
      } 
      else { 
       image.setBackgroundResource(R.drawable.expander_ic_minimized); 
      } 
      return view; 
     } 

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

     public Object getGroup(int groupPosition) { 
      return groupData.get(groupPosition).get(G_TEXT).toString(); 
     } 

     public int getGroupCount() { 
      return groupData.size(); 
     } 

     // ************************************** 
     public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { 
      if (convertView == null) 
      { 
       LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
       convertView = inflater.inflate(R.layout.childitem, null); 
       holder = new ViewHolder(); 
       holder.cTitle = (TextView) convertView.findViewById(R.id.child_title); 
       holder.checkBox = (CheckBox) convertView.findViewById(R.id.multiple_checkbox); 
       convertView.setTag(holder); 
      } 
      else 
      { 
       holder = (ViewHolder) convertView.getTag(); 
      } 
      holder.cTitle.setText(childData.get(groupPosition).get(childPosition).get(C_TITLE).toString()); 
      if (getChildrenCount(groupPosition) > 0) { 
       Log.i("chlrden", getChildrenCount(groupPosition) + ""); 
       holder.checkBox.setChecked(childCheckBox.get(groupPosition).get(childPosition).get(C_CB)); 
      } 
      return convertView; 
     } 

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

     public Object getChild(int groupPosition, int childPosition) { 
      return childData.get(groupPosition).get(childPosition).get(C_TITLE).toString(); 
     } 

     public int getChildrenCount(int groupPosition) { 
      return childData.get(groupPosition).size(); 
     } 

     // ************************************** 
     public boolean hasStableIds() { 
      return true; 
     } 

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


    public void SaveExpanded(String key, String value){ 
     sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); 
     SharedPreferences.Editor editor = sharedPreferences.edit(); 
     editor.putString(key, value); 
     editor.commit(); 
     } 
    public void LoadExpanded(){ 
     sharedPreferences = PreferenceManager.getDefaultSharedPreferences(getApplicationContext()); 
     loadedexpanded = sharedPreferences.getString("expand", "false"); 
    } 
} 

Allerdings, wenn ich es noch einmal klicken, wird die Gruppe schließt, aber ich habe nicht die Gruppennummer. Ich verstehe es nur, wenn ich eine Gruppe öffne.

Wenn ich

verwenden

exList.setOnGroupClickListener(new OnGroupClickListener() { 

    @Override 
    public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) { 

     if (groupPosition > 0){ 
      return true; 
     } 
     return false; 
    } 

}); 

ich die Gruppennummer beiden Male, aber dann die Gruppen öffnen nicht.

Irgendwelche Ideen?

Answer 1

In onCreate() Ihre Einrichtung Ihrer ExpListView (findViewById, Adapter, Gruppe/Kind Listener etc.). Aber in refresh() Ihre Einrichtung Ihrer ExpListView ohne den Hörer einzustellen ... Sie rufen nur findViewById und stellen Sie den Adapter. Sie müssen das gleiche tun, wie Sie in onCreate() getan haben.

Allerdings glaube ich nicht, dass Sie Ihre ExpListView in refresh() "reinitialisieren" müssen und Sie sollten Ihren Code wahrscheinlich überprüfen. Wenn Sie möchte ich würde vorschlagen, dass Sie Ihre ExpListView als Membervariable definieren und in refresh entfernen Sie die Zeile

ExpandableListView exList = (ExpandableListView) findViewById(R.id.layoutExListView); 

in Ihrem refresh Methode

Answer 2

jedoch die onGroupClickListener nicht richtig funktioniert, habe ich eine andere Lösung gefunden . Ich benutzte setOnGroupExpandListener und setOnGroupCollapseListener und sie arbeiten magisch!