Android RSS Feed Reader

Question

Я пытаюсь проверить код, который я взял с Youtuber (https://www.loopwiki.com/application/android-rss-feed-reader-application/),, но когда я загружаю этот код, он не берет данные из Интернета (я реализовал "android.permission.INTERNET" иЯ работаю с compileSdkVersion 28, minSdkVersion 21, targetSdkVersion 27.) Может кто-нибудь помочь мне найти ошибку в этом коде?

---

build.gradle:

apply plugin: 'com.android.application'

android {
    useLibrary 'org.apache.http.legacy'
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.pollorenzo.test001"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    testImplementation 'junit:junit:4.12'
    implementation 'com.android.support:recyclerview-v7:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support:cardview-v7:28.0.0'
    implementation 'com.daimajia.easing:library:2.0@aar'
    implementation 'com.daimajia.androidanimations:library:2.3@aar'
    implementation 'com.squareup.picasso:picasso:2.5.2'

}

AndroidManifest.xml:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.pollorenzo.test001">

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity
            android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

ReadRss.java

import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

public class ReadRss extends AsyncTask<Void, Void, Void> {
    Context context;
    String address = "http://www.sciencemag.org/rss/news_current.xml";
    ProgressDialog progressDialog;
    ArrayList<FeedItem> feedItems;
    RecyclerView recyclerVi;
    URL url;

    public ReadRss(Context context, RecyclerView recyclerVie) {
        this.recyclerVi = recyclerVie;
        this.context = context;
        progressDialog = new ProgressDialog(context);
        progressDialog.setMessage("Loading...");
    }

    //before fetching of rss statrs show progress to user
    @Override
    protected void onPreExecute() {
        progressDialog.show();
        super.onPreExecute();
    }


    //This method will execute in background so in this method download rss feeds
    @Override
    protected Void doInBackground(Void... params) {
        //call process xml method to process document we downloaded from getData() method
        ProcessXml(Getdata());

        return null;
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        super.onPostExecute(aVoid);
        progressDialog.dismiss();
        FeedsAdapter adapter = new FeedsAdapter(context, feedItems);
        recyclerVi.setLayoutManager(new LinearLayoutManager(context));
        recyclerVi.addItemDecoration(new VerticalSpace(20));
        recyclerVi.setAdapter(adapter);
    }

    // In this method we will process Rss feed  document we downloaded to parse useful information from it
    private void ProcessXml(Document data) {
        if (data != null) {
            feedItems = new ArrayList<>();
            Element root = data.getDocumentElement();
            Node channel = root.getChildNodes().item(1);
            NodeList items = channel.getChildNodes();
            for (int i = 0; i < items.getLength(); i++) {
                Node cureentchild = items.item(i);
                if (cureentchild.getNodeName().equalsIgnoreCase("item")) {
                    FeedItem item = new FeedItem();
                    NodeList itemchilds = cureentchild.getChildNodes();
                    for (int j = 0; j < itemchilds.getLength(); j++) {
                        Node cureent = itemchilds.item(j);
                        if (cureent.getNodeName().equalsIgnoreCase("title")) {
                            item.setTitle(cureent.getTextContent());
                        } else if (cureent.getNodeName().equalsIgnoreCase("description")) {
                            item.setDescription(cureent.getTextContent());
                        } else if (cureent.getNodeName().equalsIgnoreCase("pubDate")) {
                            item.setPubDate(cureent.getTextContent());
                        } else if (cureent.getNodeName().equalsIgnoreCase("link")) {
                            item.setLink(cureent.getTextContent());
                        } else if (cureent.getNodeName().equalsIgnoreCase("media:thumbnail")) {
                            //this will return us thumbnail url
                            String url = cureent.getAttributes().item(0).getTextContent();
                            item.setThumbnailUrl(url);
                        }
                    }
                    feedItems.add(item);


                }
            }
        }
    }

    //This method will download rss feed document from specified url
    public Document Getdata() {
        try {
            url = new URL(address);
            HttpURLConnection connection = (HttpURLConnection) url.openConnection();
            connection.setRequestMethod("GET");
            InputStream inputStream = connection.getInputStream();
            DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = builderFactory.newDocumentBuilder();
            Document xmlDoc = builder.parse(inputStream);
            return xmlDoc;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

FeedsAdapter.java

import android.content.Context;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.daimajia.androidanimations.library.Techniques;
import com.daimajia.androidanimations.library.YoYo;
import com.squareup.picasso.Picasso;

import java.util.ArrayList;

/**
 * Created by rishabh on 26-02-2016.
 */
public class FeedsAdapter extends RecyclerView.Adapter<FeedsAdapter.MyViewHolder> {
    ArrayList<FeedItem> feedItems;
    Context context;
    public FeedsAdapter(Context context, ArrayList<FeedItem> feedItems){
        this.feedItems=feedItems;
        this.context=context;
    }

    public void addItems(FeedItem item) {
        feedItems.add(item);
        notifyDataSetChanged();
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view= LayoutInflater.from(context).inflate(R.layout.custum_row_news_item,parent,false);
        MyViewHolder holder=new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, int position) {
        YoYo.with(Techniques.FadeIn).playOn(holder.cardView);
        FeedItem current=feedItems.get(position);
        holder.Title.setText(current.getTitle());
        holder.Description.setText(current.getDescription());
        holder.Date.setText(current.getPubDate());
        Picasso.with(context).load(current.getThumbnailUrl()).into(holder.Thumbnail);
    }

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

    public class MyViewHolder extends RecyclerView.ViewHolder {
        TextView Title,Description,Date;
        ImageView Thumbnail;
        CardView cardView;
        public MyViewHolder(View itemView) {
            super(itemView);
            Title= (TextView) itemView.findViewById(R.id.title_text);
            Description= (TextView) itemView.findViewById(R.id.description_text);
            Date= (TextView) itemView.findViewById(R.id.date_text);
            Thumbnail= (ImageView) itemView.findViewById(R.id.thumb_img);
            cardView= (CardView) itemView.findViewById(R.id.cardview);
        }
    }
}

MainActivity.java

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;

public class MainActivity extends AppCompatActivity {

    RecyclerView recyclerView;
    FeedsAdapter adapter;

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

        recyclerView = (RecyclerView) findViewById(R.id.recyclerview);
        ReadRss readRss = new ReadRss(this, recyclerView);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(adapter);
            readRss.execute();
    }
}