Search custom listview with database

Excuse me. I am weak in English Language. Please do not negative score! I know how to search the list view of the dynamic view ... But I do not know how to search the database list view . Can you tell me search codes list view the values of its items database is filled ?

this is my codes in database class:

    public DrLists findProduct(String Title) {
    String query = "Select * FROM " + TABLE_NAME + " WHERE " + TABLE_NAME + " =  \"" + Title + "\"" ;

    SQLiteDatabase db = this.getWritableDatabase();

    Cursor cursor = db.rawQuery(query, null);

drLists=new DrLists();

    if (cursor.moveToFirst()) {
        cursor.moveToFirst();
        drLists.setId(Integer.parseInt(cursor.getString(0)));
        drLists.setName(cursor.getString(1));
        drLists.setFamily(cursor.getString(2));
        cursor.close();
    } else {
        drLists = null;
    }
    db.close();
    return drLists;
}

and this is my codes in Activity:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.navigation);
    databaseAssets=new DatabaseAssets(getApplicationContext());
    try {
        databaseAssets.createDataBase();
        databaseAssets.openDataBase();
    }catch (IOException e){
        e.printStackTrace();
    }
    editText=(EditText)findViewById(R.id.edt_search);
    Button search = (Button)findViewById(R.id.btn_search);
    drawerLayout = (DrawerLayout) findViewById(R.id.my_drawerlayout);
    navigationView = (NavigationView) findViewById(R.id.my_navigation);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,
            drawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
    drawerLayout.setDrawerListener(toggle);
    toggle.syncState();


    search.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
             drLists=new DrLists();

            drLists=databaseAssets.findProduct(editText.getText().toString());

        }
    });

But does not findProduct function! What is the problem?