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 implementation 'com.android.support:recyclerview-v7:28.0.0'

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<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <android.support.v7.widget.SearchView

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public class Name {

    private String name;

    Name(String name) {
        this.name = name;
    }

    public String getName() {
        return name;

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<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:tools="http://schemas.android.com/tools">

    <android.support.v7.widget.AppCompatTextView
        android:id="@+id/tv_name"
        android:layout_width="wrap_content"

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import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.AppCompatTextView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Adapter;
import android.widget.Filter;
import android.widget.Filterable;

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public class AnimalsAdapter extends RecyclerView.Adapter<AnimalsAdapter.AnimalsViewHolder> implements Filterable {

    private Context context;
    private List<Name> nameList;
    private List<Name> filteredNameList;

    AnimalsAdapter(Context context, List<Name> nameList) {
        super();
        this.context = context;
        this.nameList = nameList;

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/**
     * <p>Returns a filter that can be used to constrain data with a filtering
     * pattern.</p>
     *
     * <p>This method is usually implemented by {@link Adapter}
     * classes.</p>
     *
     * @return a filter used to constrain data
     */
    @Override

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@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        searchView = findViewById(R.id.search_view);
        recyclerView = findViewById(R.id.recycler_view);

        addNameToList("Giraffe");
        addNameToList("Tiger");
        addNameToList("Rhinoceros");

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searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String queryString) {
                animalsAdapter.getFilter().filter(queryString);
                return false;
            }

            @Override
            public boolean onQueryTextChange(String queryString) {
                animalsAdapter.getFilter().filter(queryString);

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    private List<Name> nameList = new ArrayList<>();
    private SearchView searchView;
    private RecyclerView recyclerView;
    private AnimalsAdapter animalsAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        searchView = findViewById(R.id.search_view);