addTextChangedListener with listview with subtext

Question

I want to search through the list and display the result in the list again so I used addtextchangelistener, but can't find a way to make it work with listview with subtext

Here's my code:

  package com.android;

    import java.io.FileNotFoundException;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.InputStreamReader;
    import java.io.LineNumberReader;
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.util.StringTokenizer;

    import android.app.ListActivity;
    import android.os.Bundle;
    import android.text.Editable;
    import android.text.TextWatcher;
    import android.util.Log;
    import android.view.View;
    import android.widget.ArrayAdapter;
    import android.widget.EditText;
    import android.widget.ListView;
    import android.widget.SimpleAdapter;
    import android.widget.TextView;

    public class MyListDemoActivity extends ListActivity {
        /** Called when the activity is first created. */
        TextView tv;



        //** List<String> content;

        EditText actv;
        List<String> arr_sort;
        //** ArrayAdapter<String> adapter;
        SimpleAdapter simpleadapter;
        ListView lv;

        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.main);

            String line = " ";

            LineNumberReader linenoreader = null;
            StringTokenizer stringtokanixer = null;
        //**    content = new ArrayList<String>();
            List<Map<String,String>> data= new ArrayList<Map<String,String>>();

            lv = (ListView) findViewById(android.R.id.list);

            try {

                InputStream istream = getResources().openRawResource(R.raw.grelist);
                InputStreamReader streamreader = new InputStreamReader(istream);

                linenoreader = new LineNumberReader(streamreader);
                linenoreader.mark(15);
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }// try catch ends here

            Log.v("getting", "working");

            for(int i=0;i<8;i++)
            {
                Map<String,String> datum= new HashMap<String,String>(2);
                try {
                    line = linenoreader.readLine();
                    Log.v("item",line);
                } catch (IOException e) {

                    e.printStackTrace();
                }
                Log.v("getting", line);
                stringtokanixer = new StringTokenizer(line);

                String st = stringtokanixer.nextToken();
                String meaning="";
                while (stringtokanixer.hasMoreTokens()) {
                    meaning +=" " +stringtokanixer.nextToken();

                }// for ends

                // map is used to add word and meaning 
                datum.put("word",st);
                datum.put("meaning",meaning);
                data.add(datum);

                //List<String> is usedto add
        //**        content.add(st);
            }


            simpleadapter = new SimpleAdapter(this, data, android.R.layout.simple_list_item_2, new String[]{"word","meaning"}, new int[]{android.R.id.text1,android.R.id.text2});

            // setListAdapter(adapter);

            lv.setAdapter(simpleadapter);
            tv = (TextView) findViewById(R.id.textView1);

            actv = (EditText) findViewById(R.id.editText1);


            /*  
                actv.addTextChangedListener(new TextWatcher() {
                int len = 0;


                @Override
                public void onTextChanged(CharSequence s, int start, int before,
                        int count) {
                        arr_sort = new ArrayList<String>();

                        len = actv.getText().length();

                        for (int i = 0; i < content.size(); i++) {
                            if (len <= content.get(i).length()) {
                                if (actv.getText()
                                        .toString()
                                        .trim()
                                        .equalsIgnoreCase(
                                                (String) content.get(i).subSequence(0,
                                                        len))) {

                                    arr_sort.add(content.get(i));
                                    Log.v("infor loop afterTextChanged", s.toString());
                                }

                            }

                        }

            //          adapter.notifyDataSetChanged();

                        adapter = new ArrayAdapter<String>(MyListDemoActivity.this,
                            android.R.layout.simple_list_item_1, arr_sort);
                        setListAdapter(adapter);
                }

                @Override
                public void beforeTextChanged(CharSequence s, int start, int count,
                        int after) {
                        Log.v("beforetextchange","hello here");
                }

                @Override
                public void afterTextChanged(Editable s) {
                    Log.v("aftertextchange","hello here");

                }
            }); // text watcher class ends here
    */


        }// on create ends here

        public void onListItemClick(ListView ls, View v, int position, long id) {
            //tv.setText(content.get(position));

            // tv.setText(content[position]) // in case of string

        }// endsd here onListItemClick(
    }

Answer 1

I have answered already in two of the StackOverflow questions itself you can them,

First is using getFilter() that android provides for Filtering using Filterable interface to the Adapter class. You can check it from here.

Second is using an external jar Lambdaj which is the best and efficient way of filtering a huge data from a List. You can check that also from here.