Ich verwende expandablelistview in meinem Projekt und möchte verschiedene Bilder für die Gruppenansicht hinzufügen und auch in der untergeordneten Ansicht möchte ich dasselbe tun, aber es funktioniert nicht. Im Folgenden ist mein Code aufgeführt.

MainActivity.java

public class MainActivity extends Activity {

ExpandableTests listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;

 private List<Integer> group;

    private HashMap<Integer, List<Integer>> Child;


Expandableimageadapter imgsadadapter;


public List<,Integer> groupImages;
public HashMap<Integer, List<Integer>> childImages;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // get the listview
    expListView = (ExpandableListView) findViewById(R.id.lvExp);

    // preparing list data
    prepareListData();


    expListView.setGroupIndicator(null);

    //imgsadadapter=new Expandableimageadapter(this, groupImages, childImages);

//  listAdapter = new ExpandableTests(this, listDataHeader, group, listDataChild, Child);

    listAdapter = new ExpandableTests(this, listDataHeader, groupImages, listDataChild, childImages);

    // setting list adapter
    expListView.setAdapter(listAdapter);
    //expListView.setAdapter(imgsadadapter);

    // Listview Group click listener
    expListView.setOnGroupClickListener(new OnGroupClickListener() {

        @Override
        public boolean onGroupClick(ExpandableListView parent, View v,
                int groupPosition, long id) {
            // Toast.makeText(getApplicationContext(),
            // "Group Clicked " + listDataHeader.get(groupPosition),
            // Toast.LENGTH_SHORT).show();
            return false;
        }
    });

    // Listview Group expanded listener
    expListView.setOnGroupExpandListener(new OnGroupExpandListener() {

        @Override
        public void onGroupExpand(int groupPosition) {
            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Expanded",
                    Toast.LENGTH_SHORT).show();
        }
    });

    // Listview Group collasped listener
    expListView.setOnGroupCollapseListener(new OnGroupCollapseListener() {

        @Override
        public void onGroupCollapse(int groupPosition) {
            Toast.makeText(getApplicationContext(),
                    listDataHeader.get(groupPosition) + " Collapsed",
                    Toast.LENGTH_SHORT).show();

        }
    });

    // Listview on child click listener
    expListView.setOnChildClickListener(new OnChildClickListener() {

        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                int groupPosition, int childPosition, long id) {
            // TODO Auto-generated method stub
            Toast.makeText(
                    getApplicationContext(),
                    listDataHeader.get(groupPosition)
                            + " : "
                            + listDataChild.get(
                                    listDataHeader.get(groupPosition)).get(
                                    childPosition), Toast.LENGTH_SHORT)
                    .show();
            return false;
        }
    });
}

/*
 * Preparing the list data
 */
private void prepareListData() {



    groupImages= new ArrayList<Integer>();
    groupImages.add(R.drawable.adminsetting);
    groupImages.add(R.drawable.productcategory);
   // groupImages.add(R.drawable.drinks);
   // groupImages.add(R.drawable.deserts);

    childImages = new HashMap<Integer, List<Integer>>();
    List<Integer> Maincat = new ArrayList<Integer>();
    Maincat.add(R.drawable.productcategory);
    Maincat.add(R.drawable.productcategory);
    Maincat.add(R.drawable.productcategory);
    Maincat.add(R.drawable.productcategory);
    Maincat.add(R.drawable.productcategory);
   // vegetablesi.add(R.drawable.Onions);
   // vegetablesi.add(R.drawable.Garlic);

    List<Integer> subcat = new ArrayList<Integer>();
    subcat.add(R.drawable.productcategory);
    subcat.add(R.drawable.productcategory);
    subcat.add(R.drawable.productcategory);
    subcat.add(R.drawable.productcategory);
   // fruitsi.add(R.drawable.Kiwifruit);
   // fruitsi.add(R.drawable.Grape);


   /* List<Integer> drinksi = new ArrayList<Integer>();
    drinksi.add(R.drawable.Vodka);
    drinksi.add(R.drawable.Milk);
    drinksi.add(R.drawable.Water);
    drinksi.add(R.drawable.CocaCola);
    drinksi.add(R.drawable.Sprite);


    List<Integer> desertsi = new ArrayList<Integer>();
    desertsi.add(R.drawable.Vodka);
    desertsi.add(R.drawable.Milk);
    desertsi.add(R.drawable.Water);
    desertsi.add(R.drawable.CocaCola);
    desertsi.add(R.drawable.Sprite);*/


   // childImages.put(groupImages.get(0), Maincat);
  //  childImages.put(groupImages.get(1), subcat);
    childImages.put(0, Maincat);
    childImages.put(1, subcat);


    listDataHeader = new ArrayList<String>();
    listDataChild = new HashMap<String, List<String>>();

    // Adding child data
    listDataHeader.add("Admin Setting");
    listDataHeader.add("Product & Category");
    listDataHeader.add("Client & Orders");

    // Adding child data
    List<String> top250 = new ArrayList<String>();
    top250.add("State City");
    top250.add("Sales Person");
    top250.add("City Sales Person");
    top250.add("Product Boxtype");
    top250.add("Shipping Carrier");
    //top250.add("The Dark Knight");
//  top250.add("12 Angry Men");

    List<String> nowShowing = new ArrayList<String>();
    nowShowing.add("Product");
    nowShowing.add("Category");
    nowShowing.add("Category Products");
    nowShowing.add("Product Categories");
    //nowShowing.add("Red 2");
    //nowShowing.add("The Wolverine");

    List<String> comingSoon = new ArrayList<String>();
    comingSoon.add("Client");
    comingSoon.add("Client Products");
    comingSoon.add("Client Orders");
    comingSoon.add("Client Orders Delivery");
    //comingSoon.add("Europa Report");

    listDataChild.put(listDataHeader.get(0), top250); // Header, Child data
    listDataChild.put(listDataHeader.get(1), nowShowing);
    listDataChild.put(listDataHeader.get(2), comingSoon);
}

ExpandableTests.java

public class ExpandableTests extends BaseExpandableListAdapter{


      private Context _context;

private List<Integer> _group;

private HashMap<Integer, List<Integer>> _Child;



private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;

public ExpandableTests(Context context, List<String> listDataHeader,List<Integer> group,
        HashMap<String, List<String>> listDataChild, HashMap<Integer, List<Integer>> Child) {
    this._context = context;
    this._listDataHeader = listDataHeader;
    this._listDataChild = listDataChild;
    this._group=group;
    this._Child=Child;
}


@Override
public Object getChild(int groupPosition, int childPosititon) {
    return this._listDataChild.get(this._listDataHeader.get(groupPosition))
            .get(childPosititon);
    // this._Child.get(this._group.get(groupPosition)).get(childPosititon);
}

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

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

    final String childText = (String) getChild(groupPosition, childPosition);
//  final int childimg = (Integer) getChild(groupPosition, childPosition);

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

    TextView txtListChild = (TextView) convertView.findViewById(R.id.lblListItem);

    txtListChild.setText(childText);

    ImageView imgListChild = (ImageView) convertView.findViewById(R.id.childsid);

    final int childimg = _Child.get(groupPosition).get(childPosition);
    imgListChild.setImageResource(childimg);
    //imgListChild.setImageResource(childimg);

    /*ImageView imageView = (ImageView) convertView.findViewById(R.id.childsid);
    final  int imageId = this.childImages.get(this.groupImages.get(groupPosition)).get(childPosition);
    imageView.setImageResource(imageId);*/

    return convertView;
}

@Override
public int getChildrenCount(int groupPosition) {
    return this._listDataChild.get(this._listDataHeader.get(groupPosition))
            .size();
}

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

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

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



@Override
public View getGroupView(int groupPosition, boolean isExpanded,
        View convertView, ViewGroup parent) {
    String headerTitle = (String) getGroup(groupPosition);
    //int headerimg = (Integer) getGroup(groupPosition);

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

    TextView lblListHeader = (TextView) convertView
            .findViewById(R.id.lblListHeader);
//  lblListHeader.setTypeface(null, Typeface.BOLD);
    lblListHeader.setText(headerTitle);

    ImageView imgsListHeader = (ImageView) convertView
            .findViewById(R.id.gropids);

    int headerimg = _group.get(groupPosition);
    imgsListHeader.setImageResource(headerimg);
//  lblListHeader.setTypeface(null, Typeface.BOLD);
    //imgsListHeader.setImageResource(R.drawable.ic_launcher);

    /*ImageView imageView = (ImageView) convertView.findViewById(R.id.gropids);
    int imageId = this.groupImages.get(groupPosition);
    imageView.setImageResource(imageId);*/
    return convertView;
}

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

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