Question

我正在尝试搜索recyclerview项目。为此，我实施了Filterable。问题是 - 匹配项目的安装，我得到了整个项目列表。这是Adapter类的构造函数：

public RecyclerAdapter (ArrayList<List<ResponseModel>> items) {
    this.items = items; // original items
    this.tempItems = items; // for searching purpose
}

以下是覆盖的方法：

@Override
    public Filter getFilter() {
        return new Filter() {

            @Override
            protected FilterResults performFiltering(CharSequence constraint) {

                String charString = constraint.toString();
                if (charString.isEmpty()) {
                    items = tempItems;
                } else {
                    ArrayList<List<ResponseModel>> filteredList = new ArrayList<>();

                    for (List<ResponseModel> responseModel : tempItems) {
                        for (int i =0; i < tempItems.size() ; i++) {
                            if (responseModel.get(i).getName().toLowerCase().contains(charString)){
                                filteredList.add(responseModel);
                            }
                        }
                    }
                    items = filteredList;

                }
                FilterResults filterResults = new FilterResults();
                filterResults.values = items;
                return filterResults;
            }

            @Override
            protected void publishResults(CharSequence constraint, FilterResults results) {

                items = (ArrayList<List<ResponseModel>>) results.values;
                notifyDataSetChanged();

            }
        };
    }

这是在Fragment类中的onCreate optionsMenu：

@Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        inflater.inflate(R.menu.options_menu, menu);
        MenuItem item = menu.findItem(R.id.action_search);
        SearchView sv = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.action_search));
        MenuItemCompat.setShowAsAction(item, MenuItemCompat.SHOW_AS_ACTION_COLLAPSE_ACTION_VIEW | MenuItemCompat.SHOW_AS_ACTION_IF_ROOM);
        MenuItemCompat.setActionView(item, sv);
        sv.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                adapter.getFilter().filter(newText);
                return true;
            }
        });
    }

Answer 1

在publishResultsMethod

中尝试以下内容

 @Override
 protected void publishResults(CharSequence constraint, FilterResults results) {
        items.clear();
        items.addAll((ArrayList<List<ResponseModel>>) results.values);
        notifyDataSetChanged();
  }

在RecyclerView上实现“搜索”功能

1 个答案: