Clash Royale CLAN TAG#URR8PPP

Filtering in my custom adapter not working

I'm trying to add a filter to my recylerview adapter. I'm following this tutorial https://www.androidhive.info/2017/11/android-recyclerview-with-search-filter-functionality/ . But, i'm using edittext. Here is how i set my edittext

<EditText
android:imeOptions="flagNoExtractUi"
android:hint="Search"
android:id="@+id/itemsearch"
android:layout_width="match_parent"
android:layout_height="wrap_content" />


and here is how i setup my search

itemsearch.addTextChangedListener(new TextWatcher()
@Override
public void afterTextChanged(Editable arg0)
String text = itemsearch.getText().toString().toLowerCase(Locale.getDefault());
adapter_order.getFilter().filter(text);
Log.d("TEXT", text);


@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3)


@Override


public void onTextChanged(CharSequence arg0, int arg1, int arg2,
int arg3)

// TODO Auto-generated method stub

);


and here is my filter() inside my adapter

filter()

@Override
public Filter getFilter()

Log.d("GO", "GO FILTER");

return new Filter()
@Override
protected FilterResults performFiltering(CharSequence charSequence)
String charString = charSequence.toString();
Log.d("MYS", charString);
if (charString.isEmpty())
listfilter = list;
else
List<Model_item> filteredList = new ArrayList<>();
for (Model_item row : list)
if (row.getItemName().toLowerCase().contains(charString.toLowerCase())
listfilter = filteredList;


FilterResults filterResults = new FilterResults();
filterResults.values = listfilter;
return filterResults;


@Override
protected void publishResults(CharSequence charSequence, FilterResults filterResults)
listfilter = (ArrayList<Model_item>) filterResults.values;
notifyDataSetChanged();

;



but nothing happen. and my Log.d inside filter() is not showing

Log.d

filter()

class Adapter extends

<Model_item> { ...

onBind()

matches()

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