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copied!<p>I also have this problem. Finally I found the root cause and the solution. To fix this, instead of setting the checkState for the checkBox, you should set its containing listView's checkState.</p> <pre><code> public class MyExpandableListViewAdapter extends BaseExpandableListAdapter { .... private boolean[][] checkedState; private void prepareData() { checkedState =new boolean[itemData.length][]; for (int i=0; i<itemData.length; i++) { groupData.append(i, String.format("Group %d", i)); checkedState[i] = new boolean[itemData[i].length]; Arrays.fill(checkedState[i],false); } } @Override public View getChildView(final int groupPosition, final int childPosition,boolean isLastChild, View convertView, ViewGroup parent) { View itemView = convertView; final ViewHolder vh; if (itemView == null) { LayoutInflater inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); itemView = inflater.inflate(R.layout.item_view, null); vh = new ViewHolder(); vh.layout = (CheckableLinearLayout)itemView.findViewById(R.id.layout); itemView.setTag(vh); } else { vh = (ViewHolder)itemView.getTag(); } final ExpandableListView listView = ((ExpandableListView)((MainActivity)context).findViewById(R.id.list)); final int position = listView.getFlatListPosition(ExpandableListView.getPackedPositionForChild(groupPosition, childPosition)); listView.setItemChecked(position, checkedState[groupPosition][childPosition]); vh.layout.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { ((CheckableLinearLayout)v).toggle(); checkedState[groupPosition][childPosition] = !checkedState[groupPosition][childPosition]; listView.setItemChecked(position, ((CheckableLinearLayout)v).isChecked()); } }); return itemView; } ... } </code></pre>

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