gistfile1.java

@Override
public int getChildrenCount(int groupPosition) {
        int size=mapList.get(getMapGroup(groupPosition)).size();	
        return size;
}

@Override
public String getGroup(int groupPosition) {		
        String group=(String)getMapGroup(groupPosition);
	return group;
}

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

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