A basic Android ExpandableListFragment (SavedTabsFragment) example.

saved_tabs.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent">

    <ExpandableListView android:id="@+id/list"
                        android:layout_height="match_parent"
                        android:layout_width="match_parent" />

</LinearLayout>

SavedTabsFragment.java

package com.advinture.ukuleletabs.fragments;

import android.app.ExpandableListActivity;
import android.app.Fragment;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.TextView;
import com.advinture.ukuleletabs.R;

/**
 * Pieced together from:
 * Android samples: com.example.android.apis.view.ExpandableList1
 * http://androidword.blogspot.com/2012/01/how-to-use-expandablelistview.html
 * http://stackoverflow.com/questions/6938560/android-fragments-setcontentview-alternative
 * http://stackoverflow.com/questions/6495898/findviewbyid-in-fragment-android
 */
public class SavedTabsFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View v = inflater.inflate(R.layout.saved_tabs, null);
        ExpandableListView elv = (ExpandableListView) v.findViewById(R.id.list);
        elv.setAdapter(new SavedTabsListAdapter());
        return v;
    }

    public class SavedTabsListAdapter extends BaseExpandableListAdapter {

        private String[] groups = { "People Names", "Dog Names", "Cat Names", "Fish Names" };

        private String[][] children = {
            { "Arnold", "Barry", "Chuck", "David" },
            { "Ace", "Bandit", "Cha-Cha", "Deuce" },
            { "Fluffy", "Snuggles" },
            { "Goldy", "Bubbles" }
        };

        @Override
        public int getGroupCount() {
            return groups.length;
        }

        @Override
        public int getChildrenCount(int i) {
            return children[i].length;
        }

        @Override
        public Object getGroup(int i) {
            return groups[i];
        }

        @Override
        public Object getChild(int i, int i1) {
            return children[i][i1];
        }

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

        @Override
        public long getChildId(int i, int i1) {
            return i1;
        }

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

        @Override
        public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {
            TextView textView = new TextView(SavedTabsFragment.this.getActivity());
            textView.setText(getGroup(i).toString());
            return textView;
        }

        @Override
        public View getChildView(int i, int i1, boolean b, View view, ViewGroup viewGroup) {
            TextView textView = new TextView(SavedTabsFragment.this.getActivity());
            textView.setText(getChild(i, i1).toString());
            return textView;
        }

        @Override
        public boolean isChildSelectable(int i, int i1) {
            return true;
        }

    }

}

thankyou