Toolbar search view implementation in fragment

menu_action_search.xml-

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    tools:context="com.activities.MyActivity">
    <item
        android:id="@+id/action_search"
        android:icon="@drawable/search"
        android:orderInCategory="100"
        android:title="@string/action_search"
        app:actionViewClass="android.widget.SearchView"
        app:showAsAction="always" />

</menu>



  Class- MyFragment.java

  private MyFilterAdpater mAdapter;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setHasOptionsMenu(true);
        mAdapter = new MyFilterAdpater(getContext(), mArrayList);
    }


    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onPrepareOptionsMenu(menu);
        inflater.inflate(R.menu.menu_action_search, menu);
        MenuItem item = menu.findItem(R.id.action_search);
        searchView = (SearchView) MenuItemCompat.getActionView(item);
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String s) {
                searchView.clearFocus();
                return false;
            }

            @Override
            public boolean onQueryTextChange(String s) {
                final List<MyModel> filteredList = filter(mArrayList, s.toLowerCase());
                mAdapter.setFilter(filteredList);
                return true;
            }
        });

    }

      private List<MyModel.Data> filter(List<MyModel.Data> models, String query) {
        query = query.toLowerCase();
        final List<MyModel.Data> filteredList = new ArrayList<>();
        for (MyModel model : models) {
            final String text = (model.getCustmorName()).toLowerCase();
            if (text.contains(query)) {
                filteredList.add(model);
            }
        }
        return filteredList;
    }

Class- MyFilterAdpater

   private ArrayList<MyModel>  mResultList;

   public void setFilter(List<MyModel.Data> model) {
        mResultList = new ArrayList<>();
        mResultList.addAll(model);
        notifyDataSetChanged();
    }