Question

SearchListAdapter.java

RecyclerView List使用EditText实现可过滤的列表搜索不起作用。请查看此代码。在我的情况下，列表已被过滤，但由于哪个列表保持不变，因此不会更改recyclerView适配器。

/**
 * Created by Dell on 4/8/2016.
 */
public class SearchListAdapter extends RecyclerView.Adapter<SearchListAdapter.ViewHolder> implements Filterable {

    private Context context;
    public static ArrayList<ChapterListModel> chapterList;

    private List<ChapterListModel> orignalChapterList = new ArrayList<>();
    private final List<ChapterListModel> filteredChapterList;

    public SearchListAdapter(Context context, ArrayList<ChapterListModel> chapterList) {
        this.context = context;
        this.chapterList = chapterList;
        orignalChapterList = chapterList;
        filteredChapterList = new ArrayList<>();

    }


    @Override
    public SearchListAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return new ViewHolder(
                LayoutInflater.from(parent.getContext()).inflate(R.layout.single_row_chapter_list, parent, false)
        );
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, final int position) {

        holder.title.setText(chapterList.get(position).getTitle());
    }


    @Override
    public int getItemCount() {
        return chapterList.size();
    }

    @Override
    public Filter getFilter() {
        return new CustomFilter(this, orignalChapterList);
    }

    public class ViewHolder extends RecyclerView.ViewHolder  {

        TextView title;

        public ViewHolder(View itemView) {
            super(itemView);
            title = (TextView) itemView.findViewById(R.id.textView);
        }
    }

    public class CustomFilter extends Filter {
        private SearchListAdapter adapter;
        private final List<ChapterListModel> originalList;
        private final List<ChapterListModel> filteredList;

        private CustomFilter(SearchListAdapter adapter, List<ChapterListModel> originalList) {
            super();
            this.adapter = adapter;
            this.originalList = new LinkedList<>(originalList);
            this.filteredList = new ArrayList<>();
        }

        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            filteredList.clear();
            final FilterResults results = new FilterResults();

            if (constraint.length() == 0) {
                filteredList.addAll(originalList);
            } else {
                final String filterPattern = constraint.toString().toLowerCase().trim();

                for (final ChapterListModel chapter : originalList) {
                    if (chapter.getTitle().contains(filterPattern)) {
                        filteredList.add(chapter);
                    }
                }
            }
            results.values = filteredList;
            results.count = filteredList.size();
            return results;
        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            adapter.filteredChapterList.clear();
            adapter.filteredChapterList.addAll((List<ChapterListModel>) results.values);
            adapter.notifyDataSetChanged();
        }
    }
}

Answer 1

最后完成但是使用另一种方式，而不是实现fiterable。

        @Override
        public void onTextChanged(CharSequence s, int start,
                                  int before, int count) {


            final String query = s.toString().toLowerCase().trim();
            final ArrayList<ChapterListModel> filteredList = new ArrayList<>();

            for (int i = 0; i < chapterLists.size(); i++) {

                final String text = chapterLists.get(i).getTitle().toLowerCase();
                if (text.contains(query)) {
                    filteredList.add(chapterLists.get(i));
                }
            }

            recyclerView.setLayoutManager(new LinearLayoutManager(SearchActivity.this));
            adapter = new SearchListAdapter(SearchActivity.this, filteredList);
            recyclerView.setAdapter(adapter);
            adapter.notifyDataSetChanged();  // data set changed


        }

Answer 2

您的onBindViewHolder和getItemCount方法应使用filteredChapterList。现在，您正在过滤列表，正确通知适配器更改，但您始终使用原始列表！

在构造函数中，您还应该更改filteredChapterList = new ArrayList<>(originalChapterList)

Answer 3

et_serachList.addTextChangedListener(new TextWatcher() { @覆盖 public void beforeTextChanged(CharSequence s, int start, int count, int after) { } @覆盖 public void onTextChanged(CharSequence s, int start, int before, int count) {

            final String query = s.toString();
            final ArrayList<data> filteredList = new ArrayList<>();
            if (data_single.size()!=0) {
                for (int i = 0; i < data_single.size(); i++) {
                    final String text = data_single.get(i).getMobile_no();
                    System.out.println("getMobile_number" + text);
                    if (text.contains(query)) {
                        filteredList.add(data_single.get(i));
                    }
                    personAdapter = new DeliverPersonAdapter(getContext(), filteredList);
                    recyclerView.setAdapter(personAdapter);
                    report_order = new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false);
                    recyclerView.setLayoutManager(report_order);
                    personAdapter.notifyDataSetChanged();
                }
            }
        }
        @Override
        public void afterTextChanged(Editable s) {
            //  filter(s.toString());

        }
    });

RecyclerView列表项使用EditText实现可过滤的搜索不起作用

3 个答案: