在Listview中搜索不起作用

Question

我想在ListView中搜索项目。我添加了搜索功能。当我运行该应用程序时，我会看到搜索栏，但是当我在其中键入内容时，它并没有过滤ListView中的项目。我不知道错误在哪里。

    public class HotellijstActivity extends AppCompatActivity {

       private HotelArrayAdapter mijnAdapter;


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


          // Database

          Thread mijnThread = new Thread(new Runnable() {
            @Override
            public void run() {
                if (ApplicatieDatabase.getDatabase(HotellijstActivity.super.getApplicationContext()).getHotelDao().getAlleHotels().size() == 0) {
                    ApplicatieDatabase.getDatabase(HotellijstActivity.super.getApplicationContext()).getHotelDao().voegNieuweHotelToe(new Hotel(0, "Disneyland Hotel", "5min. lopen", R.drawable.disneyland_hotel));
                    ApplicatieDatabase.getDatabase(HotellijstActivity.super.getApplicationContext()).getHotelDao().voegNieuweHotelToe(new Hotel(0, "Disney's Hotel New York", "10min. lopen", R.drawable.disney_hotel_new_york)); 
                }
                final List<Hotel> alleHotels = ApplicatieDatabase.getDatabase(HotellijstActivity.super.getApplicationContext()).getHotelDao().getAlleHotels();

                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        // fill up the list
                        vulLijstOp(alleHotels);
                    }
                });
            }
        });
        mijnThread.start();
    }

使用数据库中的数据填充列表

    public void vulLijstOp(final List<Hotel> alleHotels) {
        mijnAdapter = new HotelArrayAdapter(this, alleHotels);
//my ListView id
        ListView listview = (ListView)findViewById(R.id.lstHotels);
//my EditText id
        EditText editText = (EditText)findViewById(R.id.editSearch);
        listview.setAdapter(mijnAdapter);

        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
                (HotellijstActivity.this).mijnAdapter.getFilter().filter(charSequence);
            }

            @Override
            public void afterTextChanged(Editable editable) {

            }
        });
      }
    }