How to add filter and scrolling to search.

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Java

Mobile

Android

Hello android enthusiasts

1. How can I add filter to a search framework in my app
2. How can I make the search result scroll by dynamically adding scrollviewer
3. How to populate the search keywords and result from text files in assets/raw folder
See the code below

MAINACTIVITY
public class MainActivity extends ActionBarActivity {

    Button btnSearch;
    private Toolbar toolbar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        toolbar = (Toolbar) findViewById(R.id.tool_bar); // Attaching the layout to the toolbar object
        setSupportActionBar(toolbar);

        Button btnSearch = (Button) findViewById(R.id.btnSearch);
        btnSearch.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                onSearchRequested();
            }
        });
    }
SEARCHACTIVITY
public class SearchActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        Map<string,string> map = new Hashtable<string,string>();
        map.put("Salam","Hello in arabic");//How to read/populate search result from text files in asseta folder
        map.put("Bonjour", "Hello in french");//How to read/populate search result from text files in asseta folder
        map.put("Hola", "Hello In Spanish");//How to read/populate search result from text files in asseta folder
        String result = "Found Nothing!";
        super.onCreate(savedInstanceState);
        Intent intent = getIntent();
        if (Intent.ACTION_SEARCH.equals(intent.getAction()))
        {
            String query = intent.getStringExtra(SearchManager.QUERY);
            Log.i("search","query="+query);
            String str = map.get(query);
            if (str!=null)
            {
                result = "result: "+query+" is "+str;
            }
        }
        TextView text = new TextView(this);
        text.setText(result);
        text.setTextSize(20);
        text.setGravity(Gravity.CENTER | Gravity.CENTER_HORIZONTAL);
        setContentView(text);
        text.setVerticalScrollBarEnabled(true);
        text.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
        text.setSingleLine(false);


    }

Kindly help