Question

（谷歌翻译）

简介： 我已经搜索了此解决方案，但没有找到它。如果此问题重复，请告诉我。谢谢。

问题： 我使用Room数据库和RecycleView创建了一个存储应用程序。然后，我寻找了将搜索添加到我的数据中的方法。一切进展顺利，但是有一个问题。如果搜索词减少，则搜索将限于可见数据。（看截图）

希望您能理解。请帮我。我看过很多教程，但是没有用。

谢谢

我的代码：过滤我的适配器

public Filter getFilter() {
        return new Filter() {
            @Override
            protected FilterResults performFiltering(CharSequence charSequence) {
                String charString = charSequence.toString();
                List<Barang> filteredList = new ArrayList<>();
                if (charString.isEmpty()) {
                    filteredList.addAll(namaBarang);
                } else {
                    for (Barang row : namaBarang) {

                        // name match condition. this might differ depending on your requirement
                        // here we are looking for name or phone number match
                        if (row.getNamaBarang().toLowerCase().contains(charString.toLowerCase())) {
                            filteredList.add(row);
                        }
                    }

                }

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

            @Override
            protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
                namaBarang = (ArrayList<Barang>) filterResults.values;
                notifyDataSetChanged();
            }
        };
    }

MainActivity

   @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        final MenuItem searchItem = menu.findItem(R.id.action_search);
        final SearchView searchView = (SearchView) searchItem.getActionView();
        searchView.setOnQueryTextListener(this);
        return true;
    }

        @Override
        public boolean onQueryTextSubmit(String query) {
            adapter.getFilter().filter(query);
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
         //   t = newText.;

            adapter.getFilter().filter(newText);
            return false;
        }

我的适配器中也有这个

void setBarangs(List<Barang> barangs){
    namaBarang = barangs;
    notifyDataSetChanged();
}

Answer 1

我的问题已经解决了：

@Override
public Filter getFilter() {
    return new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence charSequence) {
            String charString = charSequence.toString();
            List<Barang> listHasilFilter = new ArrayList<>();
            List<Barang> listYgAkandiFilter = new ArrayList<>();
            listYgAkandiFilter.addAll(namaBarangC);
            if (charString.isEmpty()) {
                listHasilFilter = listYgAkandiFilter;

            //    namaBarang = listYgAkandiFilter;
                Log.d(TAG, "" + namaBarang.size());
            } else {
                for (Barang row : namaBarangC) {

                    // name match condition. this might differ depending on your requirement
                    // here we are looking for name or phone number match
                    if (row.getNamaBarang().toLowerCase().contains(charString.toLowerCase())) {
                        listHasilFilter.add(row);
                    }
                }

            }

            FilterResults hasilFilter = new FilterResults();
            hasilFilter.values = listHasilFilter;
            return hasilFilter;
        }

        @Override
        protected void publishResults(CharSequence charSequence, FilterResults hasilFilter) {
            namaBarang = (ArrayList<Barang>) hasilFilter.values;
            notifyDataSetChanged();
        }
    };
}

谢谢

在带有Room和RecyleView的SearchView中添加过滤器

1 个答案: