過濾方法只返回第一個項目Android

Question

我有RecyclerView我試圖讓過濾器搜索到回收項目及其工作，但是當我使用它並輸入任何內容時，結果只是列表的第一項。

這是篩選方法

private List<Data> filter(List<Data> datas, String newText) { 
    newText = newText.toLowerCase(); 

    final List<Data> filteredModelList = new ArrayList<>(); 
    for (Data data : datas) { 

     final String text = data.getTODO_TITLE().toLowerCase(); 
     if (text.contains(newText)) { 
      filteredModelList.add(data); 
     } 
    } 
    return filteredModelList; 
} 

，這是菜單

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.menu_search, menu); 
    MenuItem searchItem = menu.findItem(R.id.action_search); 
    SearchView searchView = (SearchView) MenuItemCompat.getActionView(searchItem); 
    searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() { 
     @Override 
     public void onFocusChange(View v, boolean hasFocus) { 
     } 
    }); 
    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { 
     @Override 
     public boolean onQueryTextSubmit(String query) { 

      return true; 
     } 
     @Override 
     public boolean onQueryTextChange(final String searchQuery) { 
      final List<Data> filteredModelList = filter(dbList, searchQuery); 
      filteredModelList.indexOf(searchQuery); 
      List <Data> search =filteredModelList; 
      todoRecyclerView.scrollToPosition(0); 
      recyclerAdapter = new TodoRecyclerAdapter(search); 
      recyclerAdapter.notifyDataSetChanged(); 

      return false;}}); 
    MenuItemCompat.setOnActionExpandListener(searchItem, new MenuItemCompat.OnActionExpandListener() { 
     @Override 
     public boolean onMenuItemActionCollapse(MenuItem item) { 
      return true; 
     } 
     @Override 
     public boolean onMenuItemActionExpand(MenuItem item) { 
      return true; 
     } 
    }); 
    return true; 
} 
@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    int id = item.getItemId(); 
    if (id == R.id.action_search) { 
     return true; 
    } 
    return super.onOptionsItemSelected(item); 
}} 

Answer 1

爲什麼要創建適配器的新實例每次你搜索？

recyclerAdapter = new TodoRecyclerAdapter(search);

而是創造一次調用recyclerAdapter.notifyDataSetChanged();