i am creating an app for my final year project at uni.. i am trying to get an rss feed working.. My issue at the moment is that i created a project (RSSActivity) and got the RSS feeds to work. I then copy and pasted all the files (5 classes and 2 layouts) into the appropriate places. There were a few errors: R cannot be found, but this was easily fixed by changing the package to that of the project (football_app). What i am tring to do is be able to click on a button called 'News' and the news appears.. the problem that i am have is that the when i now click on the 'News' button, it say 'Unfortunately football app has stopped'.. i have tried every single class in the intent, and changed the intent activity name appropriately.. can anyone help me.. code below...
/////////////// HttpFeedSource.java package com.julian.football_app; import java.util.ArrayList; import java.util.List; class HttpFeedSource implements FeedSource { protected static final String URL = "http://www.skysports.com/rss/0,20514,11661,00.xml"; public List<RSSItem> getFeed() { List<RSSItem> itemList = new ArrayList<RSSItem>(); NewsParser parser = new NewsParser(URL); parser.parse(); NewsParser.RssFeed feed = parser.getFeed(); for (NewsParser.Item i : feed.getItems()) { itemList.add(new RSSItem(i.getUrl(), i.getTitle(), i.getDescription(), i.getimageUrl())); } return itemList; } } ////////////////////// FeedSource.java package com.julian.football_app; import java.util.List; interface FeedSource { List<RSSItem> getFeed();}<code> /////////////////////////////////////////////////////////////////////////////////////////// //MockFeedSource.java
package com.julian.football_app;
import java.util.ArrayList;import java.util.List;
class MockFeedSource implements FeedSource {
public List<RSSItem> getFeed() { RSSItem item; final List<RSSItem> items = new ArrayList<RSSItem>(); item = new RSSItem("Android Workshop er gøy", "http://www.ap.no", " this is the desc", ""); items.add(item); item = new RSSItem("Android Workshop er gøy 2", "http://www.ap.no", "this is the desc", ""); items.add(item); item = new RSSItem("Android Workshop er gøy3", "http://www.ap.no", "this is the desc", ""); items.add(item); return items;}}
</code>/////////////////////////////////////////////////////////////////////////////////////////// NewsParser.java package com.julian.football_app; import org.xml.sax.Attributes; import org.xml.sax.InputSource; import org.xml.sax.helpers.DefaultHandler; import javax.xml.parsers.SAXParser; import javax.xml.parsers.SAXParserFactory; import java.io.InputStream; import java.net.URL; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Date; import java.util.HashMap; import java.util.Locale; class NewsParser extends DefaultHandler { public static SimpleDateFormat sdf = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss zzz", Locale.ENGLISH); private String urlString; private RssFeed rssFeed; private StringBuilder text; private Item item; private boolean imgStatus; public NewsParser(String url) { this.urlString = url; this.text = new StringBuilder(); } public void parse() { InputStream urlInputStream = null; SAXParserFactory spf; SAXParser sp; try { URL url = new URL(this.urlString); urlInputStream = url.openConnection().getInputStream(); InputSource is = new InputSource(urlInputStream); is.setEncoding("ISO-8859-1"); spf = SAXParserFactory.newInstance(); if (spf != null) { sp = spf.newSAXParser(); sp.parse(is, this); } } catch (Exception e) { throw new RuntimeException(e); } finally { try { if (urlInputStream != null) urlInputStream.close(); } catch (Exception e) { throw new RuntimeException(e); } } } public RssFeed getFeed() { return (this.rssFeed); } public void startElement(String uri, String localName, String qName, Attributes attributes) { if (qName.equalsIgnoreCase("channel")) this.rssFeed = new RssFeed(); else if (qName.equalsIgnoreCase("item") && (this.rssFeed != null)) { this.item = new Item(); this.rssFeed.addItem(this.item); } else if (qName.equalsIgnoreCase("image") && (this.rssFeed != null)) this.imgStatus = true; } public void endElement(String uri, String localName, String qName) { if (this.rssFeed == null) return; if (qName.equalsIgnoreCase("item")) this.item = null; else if (qName.equalsIgnoreCase("image")) this.imgStatus = false; else if (qName.equalsIgnoreCase("title")) { if (this.item != null) this.item.title = this.text.toString().trim(); else if (this.imgStatus) this.rssFeed.imageTitle = this.text.toString().trim(); else this.rssFeed.title = this.text.toString().trim(); } else if (qName.equalsIgnoreCase("link")) { if (this.item != null) this.item.link = this.text.toString().trim(); else if (this.imgStatus) this.rssFeed.imageLink = this.text.toString().trim(); else this.rssFeed.link = this.text.toString().trim(); } else if (qName.equalsIgnoreCase("description")) { if (this.item != null) this.item.description = this.text.toString().trim(); else this.rssFeed.description = this.text.toString().trim(); } else if (qName.equalsIgnoreCase("url") && this.imgStatus) this.rssFeed.imageUrl = this.text.toString().trim(); else if (qName.equalsIgnoreCase("language")) this.rssFeed.language = this.text.toString().trim(); else if (qName.equalsIgnoreCase("generator")) this.rssFeed.generator = this.text.toString().trim(); else if (qName.equalsIgnoreCase("copyright")) this.rssFeed.copyright = this.text.toString().trim(); else if (qName.equalsIgnoreCase("pubDate") && (this.item != null)) { try { this.item.pubDate = sdf.parse(this.text.toString().trim()); } catch (ParseException e) { throw new RuntimeException(); } } else if (qName.equalsIgnoreCase("category") && (this.item != null)) this.rssFeed.addItem(this.text.toString().trim(), this.item); this.text.setLength(0); } public void characters(char[] ch, int start, int length) { this.text.append(ch, start, length); } public static class RssFeed { public String title; public String description; public String link; public String language; public String generator; public String copyright; public String imageUrl; public String imageTitle; public String imageLink; private ArrayList<Item> items; private HashMap<String, ArrayList<Item>> category; public void addItem(Item item) { if (this.items == null) this.items = new ArrayList<Item>(); this.items.add(item); } public void addItem(String category, Item item) { if (this.category == null) this.category = new HashMap<String, ArrayList<Item>>(); if (!this.category.containsKey(category)) this.category.put(category, new ArrayList<Item>()); this.category.get(category).add(item); } public ArrayList<Item> getItems() { return items; } } public static class Item implements Comparable<Item> { public String title; public String description; public String link; public Date pubDate; private String url; private String imageUrl; public String toString() { return (this.title +": "); } public int compareTo(Item o) { return (int) (o.pubDate.getTime() - pubDate.getTime()); } public Date getPubDate() { return pubDate; } public String getDescription() { return description; } public String getTitle() { return title; } public String getUrl() { return url; } public String getimageUrl() { return imageUrl; } } }package com.julian.football_app;import com.julian.football_app.R;import android.app.Activity;import android.os.Bundle;import android.widget.ListView;public class RSSActivity extends Activity { /** * Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main2); ListView rssItemList = (ListView) findViewById(R.id.rssListview); FeedSource feedSource = new HttpFeedSource(); RSSItemAdapter adapter = new RSSItemAdapter(this, R.layout.rssitem, feedSource.getFeed()); rssItemList.setAdapter(adapter); }}/////////RssItem package com.julian.football_app; import java.util.Date; class RSSItem { private String url; private String title; private String description; private String imageUrl; private Date pubDate; public RSSItem() { } public RSSItem(String url, String title, String description, String imageUrl) { this.url = url; this.title = title; this.description = description; this.imageUrl = imageUrl; } public String getUrl() { return url; } public void setUrl(String url) { this.url = url; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getDescription() { return description; } public void setDesc(String description) { this.description = description; } public void setImageUrl(String imageUrl) { this.imageUrl = imageUrl; } public String getimageUrl() { return imageUrl; } public void setpubDate(Date pubDate){ this.pubDate = pubDate; } public Date getpubDate(){ return pubDate; } }////////////////// RssItemAdaptor package com.julian.football_app; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.TextView; import java.util.List; import com.julian.football_app.R; class RSSItemAdapter extends ArrayAdapter<RSSItem> { private final Context context; public RSSItemAdapter(Context context, int textViewResourceId, List<RSSItem> items) { super(context, textViewResourceId, items); this.context = context; } @Override public View getView(int position, View convertView, ViewGroup parent) { View v = convertView; if (v == null) { LayoutInflater vi = (LayoutInflater) context .getSystemService(Context.LAYOUT_INFLATER_SERVICE); v = vi.inflate(R.layout.rssitem, null); } final RSSItem item = getItem(position); TextView title = (TextView) v.findViewById(R.id.title); TextView desc = (TextView) v.findViewById(R.id.description); TextView url = (TextView) v.findViewById(R.id.url); // this is what is viewed title.setText(item.getTitle()); desc.setText(item.getDescription()); url.setText(item.getimageUrl()); return v; } }///This is the button i want to display the Rss Feedpackage com.julian.football_app;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button; public class Menu extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.menu); //setting the buttons Button btnews1 = (Button) findViewById(R.id.news_1); btnews1.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { // TODO Auto-generated method stub Intent news1intent = new Intent(Menu.this, news_1.class); Menu.this.startActivity(news1intent); } });Thank you for looking at my code... It would be much appreciated if someone could help me :) (i know its says news_1.class in the intent.. its only cuz i tried everything and went back to original state..)
These are the errors that appear in the LogCat:
03-23 13:54:16.118: E/AndroidRuntime(553): FATAL EXCEPTION: main03-23 13:54:16.118: E/AndroidRuntime(553): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1508)03-23 13:54:16.118: E/AndroidRuntime(553): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384)03-23 13:54:16.118: E/AndroidRuntime(553): at android.app.Activity.startActivityForResult(Activity.java:3190)03-23 13:54:16.118: E/AndroidRuntime(553): at android.app.Activity.startActivity(Activity.java:3297)03-23 13:54:16.118: E/AndroidRuntime(553): at com.julian.football_app.Menu$1.onClick(Menu.java:24)03-23 13:54:16.118: E/AndroidRuntime(553): at android.view.View.performClick(View.java:3460)03-23 13:54:16.118: E/AndroidRuntime(553): at android.view.View$PerformClick.run(View.java:13955)03-23 13:54:16.118: E/AndroidRuntime(553): at android.os.Handler.handleCallback(Handler.java:605)03-23 13:54:16.118: E/AndroidRuntime(553): at android.os.Handler.dispatchMessage(Handler.java:92)03-23 13:54:16.118: E/AndroidRuntime(553): at android.os.Looper.loop(Looper.java:137)03-23 13:54:16.118: E/AndroidRuntime(553): at android.app.ActivityThread.main(ActivityThread.java:4340)03-23 13:54:16.118: E/AndroidRuntime(553): at java.lang.reflect.Method.invokeNative(Native Method)03-23 13:54:16.118: E/AndroidRuntime(553): at java.lang.reflect.Method.invoke(Method.java:511)03-23 13:54:16.118: E/AndroidRuntime(553): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)03-23 13:54:16.118: E/AndroidRuntime(553): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)03-23 13:54:16.118: E/AndroidRuntime(553): at dalvik.system.NativeStart.main(Native Method)
