输入过滤器工作正常但删除了一些单词后无法显示列表中的项目。重新过滤不起作用。我找不到解决方案，
这是我的Adapter类。
public class DealerListAdapter extends RecyclerView.Adapter<DealerListAdapter.ViewHolderDealerList> {
private LayoutInflater layoutInflater;
public Context mcontext;
private ArrayList<SuggestGetSet> dealerArrayList = new ArrayList<>();
Typeface type;
private static String selectedRepId, selectedDealerId, selectedDealerName;
public DealerListAdapter(Context context) {
layoutInflater = LayoutInflater.from(context);
type = Typeface.createFromAsset(context.getAssets(), "helvr.ttf");
}
public static String getDealerName() {
return selectedDealerName;
}
public static String getDealerID() {
return selectedDealerId;
}
public static String getRepID() {
return selectedRepId;
}
public DealerListAdapter(ArrayList<SuggestGetSet> list, Context context) {
this.mcontext = context;
layoutInflater = LayoutInflater.from(context);
this.dealerArrayList = list;
type = Typeface.createFromAsset(context.getAssets(), "helvr.ttf");
}
public void setDealertList(ArrayList<SuggestGetSet> dealerAList) {
this.dealerArrayList = dealerAList;
notifyItemRangeChanged(0, dealerArrayList.size());
}
@Override
public ViewHolderDealerList onCreateViewHolder(ViewGroup parent, int viewType) {
View view = layoutInflater.inflate(R.layout.custom_dealer_list_layout, parent, false);
ViewHolderDealerList viewHolderDealerList = new ViewHolderDealerList(view);
return viewHolderDealerList;
}
@Override
public void onBindViewHolder(ViewHolderDealerList holder, int position) {
final SuggestGetSet model = dealerArrayList.get(position);
holder.bind(model);
//SuggestGetSet currentDealer = dealerArrayList.get(position);
//holder.dealerName.setText(currentDealer.getName());
//holder.dealerName.setTypeface(type);
final int pos = position;
holder.dealerName.setText(dealerArrayList.get(position).getName());
holder.dealerName.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
selectedDealerId = dealerArrayList.get(pos).getDealerId();
selectedRepId = dealerArrayList.get(pos).getId();
selectedDealerName = dealerArrayList.get(pos).getName();
Toast.makeText(layoutInflater.getContext(), dealerArrayList.get(pos).getName() + " / " + dealerArrayList.get(pos).getDealerId() + " / " + dealerArrayList.get(pos).getId(), Toast.LENGTH_LONG).show();
}
});
}
@Override
public int getItemCount() {
return dealerArrayList.size();
}
public void setModels(ArrayList<SuggestGetSet> models) {
dealerArrayList = new ArrayList<>(models);
}
static class ViewHolderDealerList extends RecyclerView.ViewHolder {
private TextView dealerName, dealerId;
public ViewHolderDealerList(View itemView) {
super(itemView);
dealerName = (TextView) itemView.findViewById(R.id.yourDelaerName);
dealerId = (TextView) itemView.findViewById(R.id.txtDelaerCollection);
}
public void bind(SuggestGetSet model) {
dealerName.setText(model.getName());
}
}
//search animations
public SuggestGetSet removeItem(int position) {
final SuggestGetSet model = dealerArrayList.remove(position);
notifyItemRemoved(position);
return model;
}
public void addItem(int position, SuggestGetSet model) {
dealerArrayList.add(position, model);
notifyItemInserted(position);
}
public void moveItem(int fromPosition, int toPosition) {
final SuggestGetSet model = dealerArrayList.remove(fromPosition);
dealerArrayList.add(toPosition, model);
notifyItemMoved(fromPosition, toPosition);
}
public void animateTo(ArrayList<SuggestGetSet> models) {
applyAndAnimateRemovals(models);
applyAndAnimateAdditions(models);
applyAndAnimateMovedItems(models);
}
private void applyAndAnimateMovedItems(ArrayList<SuggestGetSet> models) {
for (int toPosition = dealerArrayList.size() - 1; toPosition >= 0; toPosition--) {
final SuggestGetSet model = dealerArrayList.get(toPosition);
final int fromPosition = models.indexOf(model);
if (fromPosition >= 0 && fromPosition != toPosition) {
moveItem(fromPosition, toPosition);
}
}
notifyDataSetChanged();
}
private void applyAndAnimateAdditions(ArrayList<SuggestGetSet> models) {
for (int i = 0, count = dealerArrayList.size(); i < count; i++) {
final SuggestGetSet model = dealerArrayList.get(i);
if (!models.contains(model)) {
addItem(i, model);
}
}
notifyDataSetChanged();
}
private void applyAndAnimateRemovals(ArrayList<SuggestGetSet> models) {
for (int i = dealerArrayList.size() - 1; i >= 0; i--) {
final SuggestGetSet model = dealerArrayList.get(i);
if (!models.contains(model)) {
removeItem(i);
}
}
notifyDataSetChanged();
}
}
这是我的片段类。
public class YourDealerListFragment extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private VollySingleton vollySingleton;
private RequestQueue requestQueue;
private RecyclerView recyclerView;
private DealerListAdapter dlAdapter;
private HashMap<String, String> hashMap;
private ArrayList<SuggestGetSet> dealerList = new ArrayList<>();
private String repNo;
private StaggeredGridLayoutManager staggeredGridLayoutManager;
private GridMenuFragment mGridMenuFragment;
private Toolbar toolbar;
public YourDealerListFragment() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* @param param1 Parameter 1.
* @param param2 Parameter 2.
* @return A new instance of fragment YourDealerListFragment.
*/
// TODO: Rename and change types and number of parameters
public static YourDealerListFragment newInstance(String param1, String param2) {
YourDealerListFragment fragment = new YourDealerListFragment();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
vollySingleton = VollySingleton.getsInstance();
requestQueue = vollySingleton.getmRequestQueue();
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_your_dealer_list, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.dealerListRecyclerView);
getJsonRequest();
//get data from sqlite
final SQLiteHandler sqLiteHandler = new SQLiteHandler(getActivity().getApplicationContext());
Cursor cr = sqLiteHandler.getData(sqLiteHandler);
cr.moveToFirst();
do {
repNo = cr.getString(0);
} while (cr.moveToNext());
cr.close();
//listview
ListView listView = (ListView) view.findViewById(R.id.listViewChoose);
SearchView searchView = (SearchView) view.findViewById(R.id.dealerNameSearchView);
searchView.setOnQueryTextListener(listener);
//custom context menu
mGridMenuFragment = GridMenuFragment.newInstance(R.drawable.background);
setupGridMenu();
mGridMenuFragment.setOnClickMenuListener(new GridMenuFragment.OnClickMenuListener() {
@Override
public void onClickMenu(GridMenu gridMenu, int position) {
switch (position) {
case 0:
Intent intent = new Intent(getActivity(), SelectItem.class);
startActivity(intent);
getActivity();
break;
}
}
});
//dealers' recycler view item click
recyclerView.addOnItemTouchListener(new NavigationDrawerFragment.RecycleTouchListner(getActivity(), recyclerView, new NavigationDrawerFragment.ClickListener() {
@Override
public void onClick(View view, int position) {
FragmentTransaction tx = getActivity().getSupportFragmentManager().beginTransaction();
tx.replace(R.id.main_frame, mGridMenuFragment);
tx.addToBackStack(null);
tx.commit();
}
}));
return view;
}
@Override
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setHasOptionsMenu(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
dealerList = new ArrayList<>();
staggeredGridLayoutManager = new StaggeredGridLayoutManager(3, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
dlAdapter = new DealerListAdapter(dealerList,getActivity());
recyclerView.setAdapter(dlAdapter);
}
//search dealer from search view
SearchView.OnQueryTextListener listener = new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
return false;
}
@Override
public boolean onQueryTextChange(String s) {
final ArrayList<SuggestGetSet> filteredModelList = filter(dealerList, s);
dlAdapter.animateTo(filteredModelList);
recyclerView.scrollToPosition(0);
dlAdapter.notifyDataSetChanged();
return true;
}
};
private ArrayList<SuggestGetSet> filter(ArrayList<SuggestGetSet> models, String query) {
query = query.toLowerCase();
if (query.equals("")) {
dlAdapter.notifyDataSetChanged();
return dealerList;
}
final ArrayList<SuggestGetSet> filteredModelList = new ArrayList<>();
for (SuggestGetSet model : models) {
final String text = model.getName().toLowerCase();
if (text.contains(query)) {
filteredModelList.add(model);
}
}
return filteredModelList;
}
//custom context menu data
private void setupGridMenu() {
List<GridMenu> menus = new ArrayList<>();
menus.add(new GridMenu("Order", R.drawable.nnn));
menus.add(new GridMenu("Banking", R.drawable.n));
menus.add(new GridMenu("Credit Note", R.drawable.nn));
menus.add(new GridMenu("Cheques", R.drawable.nnnn));
menus.add(new GridMenu("Invoice Dispatch", R.drawable.nnnnn));
menus.add(new GridMenu("Goods Return", R.drawable.nnnnnn));
mGridMenuFragment.setupMenu(menus);
}
private void getJsonRequest() {
CustomJsonObjectRequest request = new CustomJsonObjectRequest(Request.Method.POST, AppConfig.URL_JSON_DEALER_LIST, hashMap, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
JSONObject jsonObject = new JSONObject(String.valueOf(response));
if (jsonObject.names().get(0).equals("feed")) {
dealerList = parseJsonResponse(response);
dlAdapter.setDealertList(dealerList);
} else {
Toast.makeText(getActivity(), "No Dealers Available", Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
/*dealerList = parseJsonResponse(response);
dlAdapter.setDealertList(dealerList);*/
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
}) {
protected Map<String, String> getParams() throws AuthFailureError {
hashMap = new HashMap<String, String>();
hashMap.put("repNo", repNo);
return hashMap;
}
};
requestQueue.add(request);
}
private ArrayList<SuggestGetSet> parseJsonResponse(JSONObject response) {
ArrayList<SuggestGetSet> groupList = new ArrayList<>();
if (response != null || response.length() > 0) {
try {
JSONArray arrayDelaers = response.getJSONArray(KEY_FEED_NAME);
for (int i = 0; i < arrayDelaers.length(); i++) {
JSONObject currentObject = arrayDelaers.getJSONObject(i);
String rep = currentObject.getString(KEY_REP_ID);
String name = currentObject.getString(KEY_REP_NAME);
String dealerId = currentObject.getString(KEY_DEALER_ID);
SuggestGetSet delaers = new SuggestGetSet();
delaers.setId(rep);
delaers.setName(name);
delaers.setDealerId(dealerId);
groupList.add(delaers);
}
//Toast.makeText(getApplicationContext(), productList.toString(), Toast.LENGTH_LONG).show();
} catch (JSONException e) {
e.printStackTrace();
}
}
return groupList;
}
public static interface ClickListener {
public void onClick(View view, int position);
//public void onLongClick(View view, int position);
}
}
这是我的SuggestGetSet类。
public class SuggestGetSet {
String dealer_id, rep_id, dealer_name;
public SuggestGetSet() {
}
public SuggestGetSet(String dealer_id, String id, String name) {
this.dealer_id=dealer_id;
this.rep_id=id;
this.dealer_name=name;
/*this.setDealerId(dealer_id);
this.setName(name);*/
}
public String getId() {
return rep_id;
}
public void setId(String id) {
this.rep_id = id;
}
public String getDealerId() {
return dealer_id;
}
public void setDealerId(String dealer_id) {
this.dealer_id = dealer_id;
}
public String getName() {
return dealer_name;
}
public void setName(String name) {
this.dealer_name = name;
}
}
答案 0 :(得分：0)
原因是您在适配器中只使用了一个列表，因此一旦删除了数据，就不会再显示它。
我建议有两个清单。一个是完整列表，另一个是您显示的列表。因此，当您搜索时，您可以搜索完整列表并将相关项添加到您显示的列表中。
这也不是进行搜索的最佳方式，因为搜索是在主线程中完成的。
尝试使用Filterable。一个例子如下。
公共类YourAdapter扩展了RecyclerView.Adapter实现了Filterable {
private ArrayList<YourModel> mCompleteList, mFilteredList;
private Context context;
public RecyclerLiquorAdapter(Context context ArrayList<LiquorItem> mCompleteList) {
this.context = context;
this.mCompleteList = mCompleteList;
mFilteredList = new ArrayList<>(mCompleteList);
}
@Override
public RecyclerLiquorAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//Your createViewHolder implementation
}
@Override
public void onBindViewHolder(final RecyclerLiquorAdapter.ViewHolder holder, final int position) {
//Your bindview holder implementation
}
@Override
public int getItemCount() {
return mFilteredList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
//Your view holder implementation
}
@Override
public Filter getFilter() {
return new MyFilter(this, mCompleteList);
}
public static class MyFilter extends Filter {
private final MyAdapter adapter;
private final List<Model> originalList;
private final List<Model> filteredList;
public LiquorFilter(RecyclerLiquorAdapter adapter, List<LiquorItem> originalList) {
this.adapter = adapter;
this.originalList = originalList;
this.filteredList = new ArrayList<>();
}
@Override
protected FilterResults performFiltering(CharSequence constraint) {
filteredList.clear();
FilterResults results = new FilterResults();
// We implement here the filter logic
if (constraint == null || constraint.length() == 0) {
// No filter implemented we return all the list
filteredList.addAll(originalList);
} else {
//Implement your filter logic here
}
}
}
results.values = filteredList;
results.count = filteredList.size();
return results;
}
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
// Now we have to inform the adapter about the new list filtered
adapter.mFilteredList.clear();
adapter.mFilteredList.addAll((ArrayList<LiquorItem>) results.values);
adapter.notifyDataSetChanged();
}
}
通过使用此功能，您可以确保所有列表操作都在后台线程中完成，并且您的UI不受影响。