Android : How to filter ListView using a EditText when enter is pressed?

So, right now, I have the a EditText that filters the data in the ListView as the text is changed. But, I want to change it so that it only filters when the enter key is pressed. I can't seem to figure it out.

It's pulling the data from a database.

public class SearchActivity extends NavDrawerActivity {


    private DBHandler dbHelper;
    private SimpleCursorAdapter dataAdapter;
    private EditText myFilter;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //setContentView(R.layout.activity_main_activity3);

        FrameLayout frameLayout = (FrameLayout) findViewById(R.id.activity_frame);
        // inflate the custom activity layout
        LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View activityView = layoutInflater.inflate(R.layout.activity_main_activity3, null, false);
        // add the custom layout of this activity to frame layout.
        frameLayout.addView(activityView);

        dbHelper = new DBHandler(this);
        dbHelper.open();

        //Clean all data
        dbHelper.deleteAllRecipes();
        //Add some data
        dbHelper.insertSomeRecipes();

        //Generate ListView from SQLite Database
        displayListView();

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    private void displayListView() {

        final Cursor cursor = dbHelper.fetchAllRecipes();

        // The desired columns to be bound
        String[] columns = new String[]{
                //DBHandler.COLUMN_CODE,
                DBHandler.COLUMN_NAME,
                DBHandler.COLUMN_TYPE,
                DBHandler.COLUMN_INGRED
        };

        // the XML defined views which the data will be bound to
        int[] to = new int[]{
                //R.id.code,
                R.id.name,
                R.id.type,
                R.id.ingredient,
        };

        // create the adapter using the cursor pointing to the desired data
        //as well as the layout information
        dataAdapter = new SimpleCursorAdapter(
                this, R.layout.recipeinfo,
                cursor,
                columns,
                to,
                0);

        ListView listView = (ListView) findViewById(R.id.listView1);
        // Assign adapter to ListView
        listView.setAdapter(dataAdapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> listView, View view,
                                    int position, long id) {
                // Get the cursor, positioned to the corresponding row in the result set
                //Cursor cursor = (Cursor) listView.getItemAtPosition(position);
                Intent n = new Intent(getApplicationContext(), RecipeActivity.class);
                n.putExtra("position", position);
                startActivity(n);
            }
        });

        final EditText myFilter = (EditText) findViewById(R.id.myFilter);
                myFilter.addTextChangedListener(new TextWatcher() {

                    public void afterTextChanged(Editable s) {
                    }

                    public void beforeTextChanged(CharSequence s, int start,
                                                  int count, int after) {
                    }

                    public void onTextChanged(CharSequence s, int start,
                                              int before, int count) {
                        dataAdapter.getFilter().filter(s.toString());

                    }
                });

        dataAdapter.setFilterQueryProvider(new FilterQueryProvider() {
            public Cursor runQuery(CharSequence constraint) {
                return dbHelper.fetchRecipesByName(constraint.toString());
            }
        });

    }

}