android retrofit how to connect search bar?

Question

Java

unable to connect search to
mainactivity

package com.example.mikhailzagrebaev.myapplication;

import android.content.Intent;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.SearchView;
import android.widget.Toast;

import com.example.mikhailzagrebaev.myapplication.Models.PostModel;

import java.util.ArrayList;
import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class MainActivity extends AppCompatActivity implements SearchView.OnQueryTextListener {

    RecyclerView recyclerView;
    private List<PostModel> posts;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        posts = new ArrayList<>();

        recyclerView = (RecyclerView) findViewById(R.id.posts_recycle_view);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
        recyclerView.setLayoutManager(layoutManager);

        PostsAdapter adapter = new PostsAdapter(posts);
        recyclerView.setAdapter(adapter);



        App.getApi().getData(244).enqueue(new Callback<List<PostModel>>() {
            @Override
            public void onResponse(Call<List<PostModel>> call, Response<List<PostModel>> response) {
                posts.addAll(response.body());
                recyclerView.getAdapter().notifyDataSetChanged();
            }

            @Override
            public void onFailure(Call<List<PostModel>> call, Throwable t) {
                Toast.makeText(getApplicationContext(),t.getMessage(), Toast.LENGTH_SHORT).show();
            }
        });
    }
    @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_search, menu);
        MenuItem searchItem = menu.findItem(R.id.search);
        SearchView searchView = (SearchView)
                searchItem.getActionView();
        searchView.setOnQueryTextListener(this);
        return true;
    }

    @Override
    public boolean onQueryTextSubmit(String query) {
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        return false;
    }
}

adapter

import android.os.Build;
import android.support.v7.widget.RecyclerView;
import android.text.Html;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.mikhailzagrebaev.myapplication.Models.PostModel;
import com.example.mikhailzagrebaev.myapplication.Models.Row;

import java.util.List;



public class PostsAdapter extends RecyclerView.Adapter<PostsAdapter.ViewHolder> {

    private List<PostModel> posts;

    public PostsAdapter(List<PostModel> posts) {
        this.posts = posts;
    }

    @Override
    public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.post_item, parent, false);
        return new ViewHolder(v);
    }

    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        PostModel post = posts.get(position);
        Row row =post.getRow();

            holder.post.setText(("Адрес: " + (String.valueOf(row.getAddress()))+
                    "\nТип парковки: " +
                    (String.valueOf(row.getType())) +
                    "\nМетро: "+ (String.valueOf(row.getNearestSubwayStation()))+
                    "\nКол-во мест: "+
                            (String.valueOf(row.getParkingSpace()))

                    ));

    }

    @Override
    public int getItemCount() {
        if (posts == null)
            return 0;
        return posts.size();
    }

    class ViewHolder extends RecyclerView.ViewHolder {
        TextView post;


        public ViewHolder(View itemView) {
            super(itemView);
            post = (TextView) itemView.findViewById(R.id.postitem_post);

        }
    }
}

log

java.lang.ClassCastException: android.support.v7.widget.SearchView cannot be cast to android.widget.SearchView
                                                                                              at com.example.mikhailzagrebaev.myapplication.MainActivity.onCreateOptionsMenu(MainActivity.java:63)
                                                                                              at android.app.Activity.onCreatePanelMenu(Activity.java:3294)
                                                                                              at android.support.v4.app.FragmentActivity.onCreatePanelMenu(FragmentActivity.java:364)
                                                                                              at android.support.v7.view.WindowCallbackWrapper.onCreatePanelMenu(WindowCallbackWrapper.java:93)
                                                                                              at android.support.v7.app.AppCompatDelegateImplBase$AppCompatWindowCallbackBase.onCreatePanelMenu(AppCompatDelegateImplBase.java:332)
                                                                                              at android.support.v7.app.AppCompatDelegateImplV9.preparePanel(AppCompatDelegateImplV9.java:1377)
                                                                                              at android.support.v7.app.AppCompatDelegateImplV9.doInvalidatePanelMenu(AppCompatDelegateImplV9.java:1657)
                                                                                              at android.support.v7.app.AppCompatDelegateImplV9$1.run(AppCompatDelegateImplV9.java:134)

Answer 1

Change this:
import android.widget.SearchView;
to this:
import android.support.v7.widget.SearchView;