Activity

package com.example.recyclerviewtest;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import com.example.recyclerviewtest.models.Feed;
import com.example.recyclerviewtest.networks.ApiService;
import com.example.recyclerviewtest.networks.RetrofitBuilder;

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

public class StartActivity extends AppCompatActivity {
    ApiService service;
    private RecyclerView itemList;
    private LinearLayoutManager horizontalLinearLayoutManager;
    private ItemAdapter adapter;
    private List<Feed.FeedData> items = new ArrayList<>();
    private Feed data;

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

        service = RetrofitBuilder.createService(ApiService.class);
        itemList = findViewById(R.id.recycler);
        LinearLayoutManager manager = new LinearLayoutManager(this);
        itemList.setLayoutManager(manager);
        adapter = new ItemAdapter(items);
        itemList.setAdapter(adapter);
        loadItems();


    }

    private void loadItems() {
        service.getFeed().enqueue(new Callback<Feed>() {
            @Override
            public void onResponse(Call<Feed> call, Response<Feed> response) {
                if (response.isSuccessful()) {
                    data = response.body();
                    items.addAll(data.getData());
                    adapter.setItems(items);

                }
            }

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

            }
        });
    }

    private class ItemAdapter extends RecyclerView.Adapter<ItemViewHolder>{
        private List<Feed.FeedData> items;

        public ItemAdapter(List<Feed.FeedData> items) {
            this.items = items;
        }

        public void setItems(List<Feed.FeedData> items) {
            this.items = items;
            notifyDataSetChanged();
        }

        @NonNull
        @Override
        public ItemViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(getBaseContext()).inflate(R.layout.item_card, parent, false);
            return new ItemViewHolder(view);
        }

        @Override
        public void onBindViewHolder(@NonNull ItemViewHolder holder, int position) {
            Feed.FeedData item = items.get(position);
            holder.bind(item);
        }

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

    private class ItemViewHolder extends RecyclerView.ViewHolder {
        TextView tv_name;
        TextView tv_location;
        TextView tv_text;
        public ItemViewHolder(@NonNull View itemView) {
            super(itemView);
            tv_location = findViewById(R.id.tv_location);
            tv_name = findViewById(R.id.tv_name);
            tv_text = findViewById(R.id.tv_text);
        }
        void bind (Feed.FeedData type) {
            tv_location.setText(type.getCity().getCityData().getName());
            tv_name.setText(type.getUser().getUserData().getName());
            tv_text.setText(type.getText());
        }
    }
}