Как использовать виджет searchview для объекта

Question

У меня проблема с моим виджетом searchview, я не могу сравнить запрос с объектом, независимо от того, какой путь я выберу (создание списка, который содержит только заголовки и т. Д. c) Как я могу сравнить запрос (в представление поиска) с объектом заголовков и построение нового представления ресайклера, которое будет содержать только запрос?

Это моя исследовательская деятельность:

    package com.example.finalhomework.view;

import androidx.appcompat.app.ActionBar;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.SearchView;
import androidx.appcompat.widget.Toolbar;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

import com.example.finalhomework.MainActivity;
import com.example.finalhomework.R;
import com.example.finalhomework.adapter.ItemAdapter;
import com.example.finalhomework.model.StackOverflowItem;
import com.example.finalhomework.model.StackOverflowPageResult;
import com.example.finalhomework.network.GetStackOverflowItemDataService;
import com.example.finalhomework.network.RetrofitInstance;

import java.util.List;

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

public class SearchActivity extends AppCompatActivity {

    Toolbar toolbar;
    private GetStackOverflowItemDataService stackOverflowItemDataService;
    List<StackOverflowItem> stackOverflowItems;
    SearchView searchItem;
    ItemAdapter adapter;

    RecyclerView rvStackoverflow;

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

        setToolbarBack();

        searchItem = findViewById(R.id.searchView_searchactivity);


        rvStackoverflow = findViewById(R.id.recyclerview_search);

        stackOverflowItemDataService = RetrofitInstance.getRetrofitInstance().create(GetStackOverflowItemDataService.class);
        stackOverflowItemDataService.getStackOverflowItem("android")
                .enqueue(new Callback<StackOverflowPageResult>() {
                    @Override
                    public void onResponse(Call<StackOverflowPageResult> call, Response<StackOverflowPageResult> response) {

                        StackOverflowPageResult stackOverflowPageResult = response.body();

                        stackOverflowItems = stackOverflowPageResult.getStackOverflowItem();

                        for (StackOverflowItem s : stackOverflowItems) {
                            Log.i("Item StackOverflow :", s.getTitle());
                        }

                        adapter = new ItemAdapter(stackOverflowItems);

                        rvStackoverflow.setAdapter(adapter);
                        rvStackoverflow.setLayoutManager(new LinearLayoutManager(SearchActivity.this));

                    }

                    @Override
                    public void onFailure(Call<StackOverflowPageResult> call, Throwable t) {

                    }
                });

        searchItem.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {

                if (stackOverflowItems.contains(query)) {
                    adapter.getFilter().filter(query);
                } else
                    Toast.makeText(SearchActivity.this, "No Match found", Toast.LENGTH_LONG).show();
                return false;
            }

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


    private void setToolbarBack() {
        toolbar = findViewById(R.id.toolbar_search);
        setSupportActionBar(toolbar);

        ActionBar ab = getSupportActionBar();
        ab.setDisplayHomeAsUpEnabled(true);
    }

}

Это мой адаптер:

    package com.example.finalhomework.adapter;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Filter;
import android.widget.Filterable;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

import com.bumptech.glide.Glide;
import com.bumptech.glide.load.engine.DiskCacheStrategy;
import com.example.finalhomework.R;
import com.example.finalhomework.model.StackOverflowItem;

import java.util.List;

public class ItemAdapter extends RecyclerView.Adapter <ItemAdapter.ItemViewHolder> implements Filterable {

    private List <StackOverflowItem> stackOverflowItemList;

    public ItemAdapter(List <StackOverflowItem> stackOverflowItemList){

        this.stackOverflowItemList = stackOverflowItemList;

    }


    @NonNull
    @Override
    public ItemAdapter.ItemViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {

        Context context = parent.getContext();
        LayoutInflater layoutInflater = LayoutInflater.from(context);

        View itemView = layoutInflater.inflate(R.layout.stack_card_view, parent, false);
        return new ItemViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(@NonNull ItemAdapter.ItemViewHolder holder, int position) {

       StackOverflowItem stackOverflowItem = stackOverflowItemList.get(position);
       holder.itemTitle.setText(stackOverflowItem.getTitle());
       holder.link.setText(stackOverflowItem.getLink());

        Glide.with(holder.itemView.getContext())
                .load(stackOverflowItem.getOwner().getProfileImage())
                .diskCacheStrategy(DiskCacheStrategy.ALL)   // cache both original & resized image
                .centerCrop()
                .into(holder.pictureItem);
    }

    @Override
    public int getItemCount() {
        return this.stackOverflowItemList.size();
    }

    @Override
    public Filter getFilter() {
        return null;

    }

    public class ItemViewHolder extends RecyclerView.ViewHolder {

        private TextView itemTitle, link;
        private ImageView pictureItem;

        public ItemViewHolder(@NonNull View itemView) {
            super(itemView);

            itemTitle = itemView.findViewById(R.id.textView_item_title);
            link = itemView.findViewById(R.id.textView_item_link);
            pictureItem = itemView.findViewById(R.id.imageView_item);

        }
    }
}

Это мой stackoverflowItem, объект, который я ищу:

    package com.example.finalhomework.model;

import java.io.Serializable;
import java.util.List;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;

public class StackOverflowItem implements Serializable
{

    @SerializedName("tags")
    @Expose
    private List<String> tags = null;
    @SerializedName("owner")
    @Expose
    private Owner owner;
    @SerializedName("is_answered")
    @Expose
    private Boolean isAnswered;
    @SerializedName("view_count")
    @Expose
    private Integer viewCount;
    @SerializedName("answer_count")
    @Expose
    private Integer answerCount;
    @SerializedName("score")
    @Expose
    private Integer score;
    @SerializedName("last_activity_date")
    @Expose
    private Integer lastActivityDate;
    @SerializedName("creation_date")
    @Expose
    private Integer creationDate;
    @SerializedName("question_id")
    @Expose
    private Integer questionId;
    @SerializedName("content_license")
    @Expose
    private String contentLicense;
    @SerializedName("link")
    @Expose
    private String link;
    @SerializedName("title")
    @Expose
    private String title;
    @SerializedName("last_edit_date")
    @Expose
    private Integer lastEditDate;
    @SerializedName("accepted_answer_id")
    @Expose
    private Integer acceptedAnswerId;
    @SerializedName("closed_date")
    @Expose
    private Integer closedDate;
    @SerializedName("closed_reason")
    @Expose
    private String closedReason;
    private final static long serialVersionUID = 2088551364601451752L;

    public List<String> getTags() {
        return tags;
    }

    public void setTags(List<String> tags) {
        this.tags = tags;
    }

    public Owner getOwner() {
        return owner;
    }

    public void setOwner(Owner owner) {
        this.owner = owner;
    }

    public Boolean getIsAnswered() {
        return isAnswered;
    }

    public void setIsAnswered(Boolean isAnswered) {
        this.isAnswered = isAnswered;
    }

    public Integer getViewCount() {
        return viewCount;
    }

    public void setViewCount(Integer viewCount) {
        this.viewCount = viewCount;
    }

    public Integer getAnswerCount() {
        return answerCount;
    }

    public void setAnswerCount(Integer answerCount) {
        this.answerCount = answerCount;
    }

    public Integer getScore() {
        return score;
    }

    public void setScore(Integer score) {
        this.score = score;
    }

    public Integer getLastActivityDate() {
        return lastActivityDate;
    }

    public void setLastActivityDate(Integer lastActivityDate) {
        this.lastActivityDate = lastActivityDate;
    }

    public Integer getCreationDate() {
        return creationDate;
    }

    public void setCreationDate(Integer creationDate) {
        this.creationDate = creationDate;
    }

    public Integer getQuestionId() {
        return questionId;
    }

    public void setQuestionId(Integer questionId) {
        this.questionId = questionId;
    }

    public String getContentLicense() {
        return contentLicense;
    }

    public void setContentLicense(String contentLicense) {
        this.contentLicense = contentLicense;
    }

    public String getLink() {
        return link;
    }

    public void setLink(String link) {
        this.link = link;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public Integer getLastEditDate() {
        return lastEditDate;
    }

    public void setLastEditDate(Integer lastEditDate) {
        this.lastEditDate = lastEditDate;
    }

    public Integer getAcceptedAnswerId() {
        return acceptedAnswerId;
    }

    public void setAcceptedAnswerId(Integer acceptedAnswerId) {
        this.acceptedAnswerId = acceptedAnswerId;
    }

    public Integer getClosedDate() {
        return closedDate;
    }

    public void setClosedDate(Integer closedDate) {
        this.closedDate = closedDate;
    }

    public String getClosedReason() {
        return closedReason;
    }

    public void setClosedReason(String closedReason) {
        this.closedReason = closedReason;
    }

}

Спасибо за помощь