How to add image in expandablelistivew?

Question

I am using expandablelistview in my project,and I want to add different images for group view and also in child view I want to do same,but its not working,following is my co

Answer 1

You are trying to convert String to Integer

In your

ExpandableTests class

comment following lines

//in getChildView() method
   // final int childimg = (Integer) getChild(groupPosition, childPosition);

//in getGroupView method
//String headerTitle = (String) getGroup(groupPosition);

And use any default icon for following images like

imgsListHeader.setImageResource(R.drawable.ic_launcher);
imgListChild.setImageResource(R.drawable.ic_launcher);

By this way you will get out of crash and hope you will get idea further image displaying.

Answer 2

Replace following line with previous one in getChildView

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

Replace following line with previous one in getGroupView

int headerimg = _group.get(groupPosition);
imgsListHeader.setImageResource(headerimg);

Replace following line MainActivity

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

Add one more image in

  groupImages arraylist in prepareListData method

Replace following lines

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

To

 childImages.put(0, Maincat);
 childImages.put(1, subcat);

For Indicator icon

Add following line in getGroupView() in ExpandableTests

ImageView imgIndicator = (ImageView) convertView.findViewById(R.id.indicator);
        if (isExpanded) {
            imgIndicator.setImageResource(R.drawable.minus);
        } else {
            imgIndicator.setImageResource(R.drawable.plus);
        }

Add following imageview in list_group.xml

<ImageView
        android:id="@+id/indicator"
        android:layout_width="24sp"
        android:layout_height="24sp"
        android:layout_alignParentRight="true"
       />