Filter方法只返回Android的第一项

Question

我有RecyclerView并且我尝试使用过滤器来搜索回收器项及其工作，但是当我使用它并输入任何东西时，结果只是列表的第一项。

这是过滤方法

 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;
}

这是菜单

  @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

为什么每次搜索都要创建适配器的新实例？

recyclerAdapter = new TodoRecyclerAdapter(search);

而是一次创建并调用recyclerAdapter.notifyDataSetChanged();