Expendable list view in android

Expentable list view in android:

Layout:

Main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
    <ExpandableListView android:layout_height="wrap_content"
    android:layout_weight="1"
    android:id="@android:id/list"
    android:layout_width="fill_parent"
    android:groupIndicator="@drawable/icon"
    android:divider="@null"></ExpandableListView> 
</LinearLayout>

child.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent" android:layout_height="wrap_content">
    <ImageView android:layout_width="wrap_content" android:id="@+id/imageView1" android:src="@drawable/icon2" android:layout_height="wrap_content" android:layout_gravity="center_horizontal"></ImageView>
    <TextView android:text="TextView" android:layout_width="wrap_content"  android:id="@+id/textView1" android:layout_gravity="center_horizontal" android:layout_height="fill_parent" android:gravity="center_vertical"></TextView>
  </LinearLayout>

ExpandableListExample.java

package com.android.valllllll2000;

import android.os.Bundle;

import android.view.View;
import android.view.ViewGroup;
import android.widget.AbsListView;
import android.widget.BaseExpandableListAdapter;

import android.app.ExpandableListActivity;
import android.graphics.Typeface;
import android.widget.TextView;

public class ExpandableListExample extends ExpandableListActivity {

    private MyExpandableListAdapter mAdapter;
    private String[] preguntas;
    private String[][] respuestas;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        // getting the arrays from the ressources

        // group array
        preguntas = getResources().getStringArray(R.array.countries);

        // children array
        String[] respuestas1 = getResources().getStringArray(R.array.capitals);
        respuestas = new String[respuestas1.length][1];
        for (int i = 0; i < respuestas1.length; i++) {
            respuestas[i][0] = respuestas1[i];
        }

        // Set up our adapter
        mAdapter = new MyExpandableListAdapter();
        setListAdapter(mAdapter);
    }

    public class MyExpandableListAdapter extends BaseExpandableListAdapter {

        public Object getChild(int groupPosition, int childPosition) {
            return respuestas[groupPosition][childPosition];
        }

        public long getChildId(int groupPosition, int childPosition) {
            return childPosition;
        }

        public int getChildrenCount(int groupPosition) {
            return respuestas[groupPosition].length;
        }

        public TextView getGenericView() {
            // Layout parameters for the ExpandableListView
            AbsListView.LayoutParams lp = new AbsListView.LayoutParams(
                    ViewGroup.LayoutParams.FILL_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
           
            TextView textView = new TextView(ExpandableListExample.this);
           
            textView.setLayoutParams(lp);

            textView.setPadding(60, 5, 0, 5);
            textView.setTextAppearance(getBaseContext(), R.style.TitleText);
            return textView;
        }

        public View getChildView(int groupPosition, int childPosition,
                boolean isLastChild, View convertView, ViewGroup parent) {
           
            //Including a custom view for the child image and text
            View inflatedView = View.inflate(getApplicationContext(),
                    R.layout.child, null);
            inflatedView.setPadding(50, 0, 0, 0);
            TextView textView =(TextView)inflatedView.findViewById(R.id.textView1);
           
            //lets set up a custom font
            Typeface font = Typeface.createFromAsset(getAssets(),"BLOODY.ttf");
            textView.setTypeface(font);
            textView.setTextSize(17);
            textView.setText(getChild(groupPosition, childPosition).toString());
            return inflatedView;
        }

        public Object getGroup(int groupPosition) {
            return preguntas[groupPosition];
        }

        public int getGroupCount() {
            return preguntas.length;
        }

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

        public View getGroupView(int groupPosition, boolean isExpanded,
                View convertView, ViewGroup parent) {
            TextView textView = getGenericView();
            textView.setText(getGroup(groupPosition).toString());
            return textView;
        }

        public boolean isChildSelectable(int groupPosition, int childPosition) {
            return true;
        }

        public boolean hasStableIds() {
            return true;
        }

    }
}