Android Open Source - HNdroid Submissions

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License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package com.gluegadget.hndroid;
//from   w w  w .ja  v a2  s .  c om
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.ArrayList;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.htmlcleaner.HtmlCleaner;
import org.htmlcleaner.TagNode;
import org.htmlcleaner.XPatherException;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.preference.PreferenceManager;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.MenuItem.OnMenuItemClickListener;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;

public class Submissions extends Activity {
  static final private int CONTEXT_COMMENTS = 3;
  static final private int CONTEXT_USER_LINK = 4;
  static final private int CONTEXT_USER_UPVOTE = 5;
  static final private int CONTEXT_GOOGLE_MOBILE = 6;
  
  static final private int NOTIFY_DATASET_CHANGED = 1;
  
  ProgressDialog dialog;
  
  ListView newsListView;
  
  NewsAdapter aa;
  
  ArrayList<News> news = new ArrayList<News>();
  
  String loginUrl;
  
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);

      newsListView = (ListView)this.findViewById(R.id.hnListView);
      registerForContextMenu(newsListView);
      int layoutID = R.layout.news_list_item;
      aa = new NewsAdapter(this, layoutID , news);
      newsListView.setAdapter(aa);
      newsListView.setOnItemClickListener(clickListener);

      final Bundle extras = getIntent().getExtras();
      TextView hnTopDesc = (TextView)this.findViewById(R.id.hnTopDesc);
      hnTopDesc.setText(extras.getString("title"));
      dialog = ProgressDialog.show(Submissions.this, "", "Loading. Please wait...", true);
      new Thread(new Runnable(){
        public void run() {
          refreshNews("http://news.ycombinator.com/submitted?id=" + extras.getString("user"));
          dialog.dismiss();
          handler.sendEmptyMessage(NOTIFY_DATASET_CHANGED);
        }
      }).start();
    }

    Handler handler = new Handler(){
      @Override
      public void handleMessage(Message msg) {
        switch(msg.what){
        case NOTIFY_DATASET_CHANGED:
          aa.notifyDataSetChanged();
          newsListView.setSelection(0);
          break;
        }
      }
    };
    
    OnItemClickListener clickListener = new OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> newsAV, View view, int pos, long id) {
      final News item = (News) newsAV.getAdapter().getItem(pos);
      if (pos < 30) {
        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getBaseContext());
        String ListPreference = prefs.getString("PREF_DEFAULT_ACTION", "view-comments");
        if (ListPreference.equalsIgnoreCase("open-in-browser")) {
          Intent viewIntent = new Intent("android.intent.action.VIEW", Uri.parse((String) item.getUrl()));
          startActivity(viewIntent);
        } else if (ListPreference.equalsIgnoreCase("view-comments")) {
          Intent intent = new Intent(Submissions.this, Comments.class);
          intent.putExtra("url", item.getCommentsUrl());
          intent.putExtra("title", item.getTitle());
          startActivity(intent);
        } else if (ListPreference.equalsIgnoreCase("mobile-adapted-view")) {
          Intent viewIntent = new Intent("android.intent.action.VIEW",
              Uri.parse((String) "http://www.google.com/gwt/x?u=" + item.getUrl()));
          startActivity(viewIntent);
        }
      } else {
        dialog = ProgressDialog.show(Submissions.this, "", "Loading. Please wait...", true);
            new Thread(new Runnable(){
              public void run() {
                refreshNews(item.getUrl());
                dialog.dismiss();
                handler.sendEmptyMessage(NOTIFY_DATASET_CHANGED);
              }
            }).start();
      }
    }
  };
    
    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
      super.onCreateContextMenu(menu, v, menuInfo);
      
      AdapterContextMenuInfo info = (AdapterContextMenuInfo)menuInfo;
      if (info.position < 30) {
        final News newsContexted = (News) newsListView.getAdapter().getItem(info.position);

        menu.setHeaderTitle(newsContexted.getTitle());

        MenuItem originalLink = menu.add(0, CONTEXT_USER_LINK, 0, newsContexted.getUrl()); 
        originalLink.setOnMenuItemClickListener(new OnMenuItemClickListener() {    
          public boolean onMenuItemClick(MenuItem item) {
            Intent viewIntent = new Intent("android.intent.action.VIEW", Uri.parse((String) item.getTitle()));
            startActivity(viewIntent);
            return true;
          }
        });

        MenuItem googleMobileLink = menu.add(0, CONTEXT_GOOGLE_MOBILE, 0, R.string.context_google_mobile);
        googleMobileLink.setOnMenuItemClickListener(new OnMenuItemClickListener() {    
          public boolean onMenuItemClick(MenuItem item) {
            Intent viewIntent = new Intent("android.intent.action.VIEW",
                Uri.parse((String) "http://www.google.com/gwt/x?u=" + newsContexted.getUrl()));
            startActivity(viewIntent);
            return true;
          }
        });

        if (newsContexted.getCommentsUrl() != "") {
          MenuItem comments = menu.add(0, CONTEXT_COMMENTS, 0, R.string.menu_comments); 
          comments.setOnMenuItemClickListener(new OnMenuItemClickListener() {    
            public boolean onMenuItemClick(MenuItem item) {
              Intent intent = new Intent(Submissions.this, Comments.class);
              intent.putExtra("url", newsContexted.getCommentsUrl());
              intent.putExtra("title", newsContexted.getTitle());
              startActivity(intent);
              return true;
            }
          });
        }

        if (loginUrl.contains("submit") && newsContexted.getUpVoteUrl() != "") {
          MenuItem upVote = menu.add(0, CONTEXT_USER_UPVOTE, 0, R.string.context_upvote);
          upVote.setOnMenuItemClickListener(new OnMenuItemClickListener() {    
            public boolean onMenuItemClick(MenuItem item) {
              dialog = ProgressDialog.show(Submissions.this, "", "Voting. Please wait...", true);
              new Thread(new Runnable(){
                public void run() {
                  SharedPreferences settings = getSharedPreferences(Main.PREFS_NAME, 0);
                  String cookie = settings.getString("cookie", "");
                  DefaultHttpClient httpclient = new DefaultHttpClient();
                  HttpGet httpget = new HttpGet(newsContexted.getUpVoteUrl());
                  httpget.addHeader("Cookie", "user=" + cookie);
                  ResponseHandler<String> responseHandler = new BasicResponseHandler();
                  try {
                    httpclient.execute(httpget, responseHandler);
                  } catch (ClientProtocolException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                  } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                  }
                  dialog.dismiss();
                  handler.sendEmptyMessage(NOTIFY_DATASET_CHANGED);
                }
              }).start();
              return true;
            }
          });
        }
      }
    }
    
    private void refreshNews(String newsUrl) {
      try {
        news.clear();
        SharedPreferences settings = getSharedPreferences(Main.PREFS_NAME, 0);
        String cookie = settings.getString("cookie", "");
        DefaultHttpClient httpclient = new DefaultHttpClient();
        HttpGet httpget = new HttpGet(newsUrl);
        if (cookie != "")
          httpget.addHeader("Cookie", "user=" + cookie);
        ResponseHandler<String> responseHandler = new BasicResponseHandler();
        String responseBody = httpclient.execute(httpget, responseHandler);
        HtmlCleaner cleaner = new HtmlCleaner();
        TagNode node = cleaner.clean(responseBody);

        Object[] newsTitles = node.evaluateXPath("//td[@class='title']/a");
        Object[] subtexts = node.evaluateXPath("//td[@class='subtext']");
        Object[] domains = node.evaluateXPath("//span[@class='comhead']");
        Object[] loginFnid = node.evaluateXPath("//span[@class='pagetop']/a");
        TagNode loginNode = (TagNode) loginFnid[5];
        loginUrl = loginNode.getAttributeByName("href").toString().trim();

        if (newsTitles.length > 0) {
          int j = 0;
          int iterateFor = newsTitles.length;
          for (int i = 0; i < iterateFor; i++) {
            String scoreValue = "";
            String authorValue = "";
            String commentValue = "";
            String domainValue = "";
            String commentsUrl = "";
            String upVoteUrl = "";
            TagNode newsTitle = (TagNode) newsTitles[i];

            String title = newsTitle.getChildren().iterator().next().toString().trim();
            String href = newsTitle.getAttributeByName("href").toString().trim();

            if (i < subtexts.length) {
              TagNode subtext = (TagNode) subtexts[i];
              Object[] scoreSpanNode = subtext.evaluateXPath("/span");
              TagNode score = (TagNode) scoreSpanNode[0];
              
              Object[] scoreAnchorNodes = subtext.evaluateXPath("/a");
              TagNode author = (TagNode) scoreAnchorNodes[0];
              authorValue = author.getChildren().iterator().next().toString().trim();
              if (scoreAnchorNodes.length == 2) {
                TagNode comment = (TagNode) scoreAnchorNodes[1];
                commentValue = comment.getChildren().iterator().next().toString().trim();
              }

              TagNode userNode = newsTitle.getParent().getParent();
              Object[] upVotes = userNode.evaluateXPath("//td/center/a[1]");
              if (upVotes.length > 0) {
                TagNode upVote = (TagNode) upVotes[0];
                upVoteUrl = upVote.getAttributeByName("href").toString().trim();
              }
              
              Object[] commentsTag = author.getParent().evaluateXPath("/a");
              if (commentsTag.length == 2)
                commentsUrl = score.getAttributeByName("id").toString().trim();
              
              scoreValue = score.getChildren().iterator().next().toString().trim();
              authorValue = author.getChildren().iterator().next().toString().trim();
              
              if (href.startsWith("http")) {
                TagNode domain = (TagNode)domains[j];
                domainValue = domain.getChildren().iterator().next().toString().trim();
                j++;
              }
            }

            News newsEntry = new News(title, scoreValue, commentValue, authorValue, domainValue, href, commentsUrl, upVoteUrl);
            news.add(newsEntry);
          }
        }
      } catch (MalformedURLException e) {
        e.printStackTrace();
      } catch (IOException e) {
        e.printStackTrace();
      } catch (XPatherException e) {
        e.printStackTrace();
      } finally {

      }
    }
}

Java Source Code List

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