How to add filter on my custom list adapter in android app [duplicate]

This question already has an answer here:

• List View Filter Android 2 answers

I have successfully make a listview from my sqlite DB with 4 items in a list item is it possible to add a filter system to short the list?

Here is my custom list adapter

import java.util.ArrayList;

import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

import com.rupomkhondaker.sonalibank.R;
import com.rupomkhondaker.sonalibank.model.ContactItem;


public class PhoneListAdapter extends BaseAdapter {
    private ArrayList<ContactItem> listData;
    private LayoutInflater layoutInflater;

    public PhoneListAdapter(Activity context, ArrayList<ContactItem> listData) {
        this.listData = listData;
        layoutInflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return listData.size();
    }

    @Override
    public Object getItem(int position) {
        return listData.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = layoutInflater.inflate(R.layout.list_white_text, null);
            holder = new ViewHolder();
            holder.nameView = (TextView) convertView.findViewById(R.id.name_title);
            holder.phoneView = (TextView) convertView.findViewById(R.id.list_sub_phone);
            holder.mobileView = (TextView) convertView.findViewById(R.id.list_sub_mobile);
            holder.emailView = (TextView) convertView.findViewById(R.id.list_sub_email);
            convertView.setTag(holder);

        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        ContactItem contactItem = listData.get(position);
        holder.nameView.setText(contactItem.getName());
        holder.phoneView.setText("Ph: " + contactItem.getPhone());
        holder.mobileView.setText("Mob: " +contactItem.getMobile());
        holder.emailView.setText("Email: " +contactItem.getEmail());


        return convertView;
    }

    static class ViewHolder {
        TextView nameView;
        TextView phoneView;
        TextView mobileView;
        TextView emailView;
    }
}

And My Fragment where the list comes up

import android.app.Fragment;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import com.rupomkhondaker.sonalibank.adapter.PhoneListAdapter;
import com.rupomkhondaker.sonalibank.model.ContactItem;
import java.util.ArrayList;


public class GMOFragment extends Fragment {
    public GMOFragment(){}

    private static String DB_NAME ="SBLdata.db";// Database name

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {

        View rootView = inflater.inflate(R.layout.fragment_contact, container, false);

        final ArrayList<ContactItem> listData = getListData();

        final ListView listView = (ListView) rootView.findViewById(R.id.gmolistView);
        listView.setAdapter(new PhoneListAdapter(getActivity(), listData));


        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> a, View v, int position, long id) {
                ContactItem contactData = (ContactItem) listView.getItemAtPosition(position);
                Intent intent = new Intent(getActivity(), ContactDetail.class);
                intent.putExtra("DATA_KEY", contactData);
                startActivity(intent);
            }

        });

        //Changing Action-bar Title
        getActivity().setTitle("GM Office Contact List");

        return rootView;
    }


    private ArrayList<ContactItem> getListData() {
        ArrayList<ContactItem> listMockData = new ArrayList<ContactItem>();
        DataBaseHelper empClick = new DataBaseHelper(getActivity(), DB_NAME);
        Cursor cursor = empClick.getDetailsofGMO();

        ContactItem newsData = null;

        while (cursor.moveToNext()) {
            newsData = new ContactItem();
            newsData.setName(cursor.getString(0));
            newsData.setPhone(cursor.getString(1));
            newsData.setMobile(cursor.getString(2));
            newsData.setEmail(cursor.getString(3));

            listMockData.add(newsData);
        }
        return listMockData;
    }
}