Expandable list view onChildClick Listener

I have implemented expandable listview with child items as checkboxes.I am trying to use on child click listener to get children items that are checked. But I am not getting any response in the log and not even the toast. Following is my class:

public class FirstFragment extends Fragment  {
    private ExpandListAdapter ExpAdapter;
    private ArrayList<ExpandListGroup> ExpListItems;
    private ExpandableListView ExpandList;
    private Button btnApply;
    @Override
    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

    }
        @Override
        public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle
        savedInstanceState){
            View view = inflater.inflate(R.layout.fragment_one, container, false);//fragment_one layout is the layout for first tab in filter
            ExpandList = (ExpandableListView) view.findViewById(R.id.ExpList);
            ExpListItems = SetStandardGroups();
            ExpAdapter = new ExpandListAdapter(this.getActivity(), ExpListItems);
            ExpandList.setAdapter(ExpAdapter);
            ExpandList.setClickable(true);


            ExpandList.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
                @Override
                public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
                    String child = (String) ExpAdapter.getChild(groupPosition, childPosition);

                    Toast.makeText(getActivity(), child, Toast.LENGTH_SHORT).show();

                    return false;
                }
            });

          int i;
           int a= ExpandList.getExpandableListAdapter().getGroupCount();
           for (i=0;i<a;i++){
               ExpandList.expandGroup(i);

           }
            return view;
        }


    public ArrayList<ExpandListGroup> SetStandardGroups() {
        ArrayList<ExpandListGroup> list = new ArrayList<ExpandListGroup>();
        ArrayList<ExpandListChild> list2 = new ArrayList<ExpandListChild>();

        ExpandListGroup gru1 = new ExpandListGroup();
        gru1.setName("A");

        ExpandListChild ch1_1 = new ExpandListChild();
        ch1_1.setName("Akurdi");
        ch1_1.setTag(null);
        list2.add(ch1_1);
        ExpandListChild ch1_2 = new ExpandListChild();
        ch1_2.setName("Aundh");
        ch1_2.setTag(null);
        list2.add(ch1_2);

        gru1.setItems(list2);

        list2 = new ArrayList<ExpandListChild>();

        ExpandListGroup gru2 = new ExpandListGroup();
        gru2.setName("B");
        ExpandListChild ch2_1 = new ExpandListChild();
        ch2_1.setName("Balewadi");
        ch2_1.setTag(null);
        list2.add(ch2_1);
        ExpandListChild ch2_2 = new ExpandListChild();
        ch2_2.setName("Bavdhan");
        ch2_2.setTag(null);
        list2.add(ch2_2);
        gru2.setItems(list2);

        list2 = new ArrayList<ExpandListChild>();

        ExpandListGroup gru3 = new ExpandListGroup();
        gru3.setName("C");
        ExpandListChild ch3_1 = new ExpandListChild();
        ch3_1.setName("Camp");
        ch3_1.setTag(null);
        list2.add(ch3_1);

        gru3.setItems(list2);

        list2 = new ArrayList<ExpandListChild>();

        ExpandListGroup gru4 = new ExpandListGroup();
        gru4.setName("D");
        ExpandListChild ch4_1 = new ExpandListChild();
        ch4_1.setName("Deccan Gymkhana");
        ch4_1.setTag(null);
        list2.add(ch4_1);
        ExpandListChild ch4_2 = new ExpandListChild();
        ch4_2.setName("Dhole Patil Road");
        ch4_2.setTag(null);
        list2.add(ch4_2);
        gru4.setItems(list2);

        list2 = new ArrayList<ExpandListChild>();

        ExpandListGroup gru5 = new ExpandListGroup();
        gru5.setName("E");
        ExpandListChild ch5_1 = new ExpandListChild();
        ch5_1.setName("Erandwane");
        ch5_1.setTag(null);
        list2.add(ch5_1);
        ExpandListChild ch5_2 = new ExpandListChild();
        ch5_2.setName("Eat Street");
        ch5_2.setTag(null);
        list2.add(ch5_2);

        gru5.setItems(list2);

        list.add(gru1);
        list.add(gru2);
        list.add(gru3);
        list.add(gru4);
        list.add(gru5);

        return list;
    }