@Override
protected RssItem doInBackground(RssParser... params) {
RssParser parser = params[0];
RssItem item = null;
try {
SAXParserFactory spf = SAXParserFactory.newInstance();
SAXParser sp = spf.newSAXParser();
XMLReader xr = sp.getXMLReader();
xr.setContentHandler(parser);
// chamar arquivo xml
// xr.parse(new InputSource(activity.getAssets().open("image_of_the_day.xml")));
// chamar link na internet
URL url = new URL("http://www.nasa.gov/rss/dyn/image_of_the_day.rss");
xr.parse(new InputSource(url.openConnection().getInputStream()));
item = parser.getFirstItem();
if (item != null) {
/*item.setImagem(
BitmapFactory.decodeResource(
activity.getResources(), R.drawable.image_of_the_day));*/
item.setImagem(getBitmap(item.getImagemUrl()));
}
} catch (Exception e) {
e.printStackTrace();
}
return item;
}
/* (non-Javadoc)
* @see javax.microedition.lcdui.ItemCommandListener#commandAction(javax.microedition.lcdui.Command, javax.microedition.lcdui.Item)
*/
public void commandAction(Command command, Item item) {
// System.out.println("DefaultRssItemCommandListner: command ="+ command.getLabel() );
if (command == RssTagHandler.CMD_RSS_ITEM_SELECT) {
RssItem rssItem = (RssItem) UiAccess.getAttribute(item, RssItem.ATTRIBUTE_KEY);
String rssUrl = rssItem.getLink();
if (rssUrl != null && this.rssBrowser != null) {
this.rssBrowser.getRssTagHandler().onViewUrl(rssUrl, item);
}
if (rssItem != null && StyleSheet.display != null) {
// #style rssDescriptionAlert
Alert alert =
new Alert(
rssItem.getTitle(),
rssItem.getDescription(),
null,
AlertType.INFO,
de.enough.polish.ui.StyleSheet.rssdescriptionalertStyle);
alert.setTimeout(Alert.FOREVER);
alert.addCommand(RssTagHandler.CMD_GO_TO_ARTICLE);
alert.addCommand(HtmlTagHandler.CMD_BACK);
alert.setCommandListener(this);
StyleSheet.display.setCurrent(alert);
this.url = rssItem.getLink();
}
} else {
this.rssBrowser.handleCommand(command);
}
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
RssItem item = rssList.get(position);
Intent intent = new Intent(RssReaderActivity.this, RssDetailActivity.class);
intent.putExtra("rss_title", item.getTitle());
intent.putExtra("rss_link", item.getLink());
RssReaderActivity.this.startActivity(intent);
}
/**
* Called when user clicks an item in the list. Starts an activity to open the url for that item.
*/
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
// Wrokround since PullToRefreshView already has one item in this list.
RssItem item = mAdapter.getItem(position - 1);
// Creates and starts an intent to open the item.link url.
Intent intent = new Intent();
intent.setClass(this, DetailActivity.class);
intent.putExtra("data", item.getDescription());
startActivity(intent);
}
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
if (parsingTitle) {
if (currentItem != null) currentItem.setTitle(new String(ch, start, length));
} else if (parsingLink) {
if (currentItem != null) {
currentItem.setLink(new String(ch, start, length));
parsingLink = false;
}
}
}
@Override
public void endElement(String uri, String localName, String qName) {
if (localName.equalsIgnoreCase("image")) {
if (!isItem) {
isImage = false;
}
} else if (localName.equalsIgnoreCase("url")) {
if (isImage) {
feed.setLogo(StringEscapeUtils.unescapeXml(chars.toString()));
}
} else if (localName.equalsIgnoreCase("ttl")) {
if (!isItem) {
feed.setTtl(Integer.parseInt(StringEscapeUtils.unescapeXml(chars.toString())));
}
} else if (localName.equalsIgnoreCase("title")) {
if (!isImage) {
if (isItem) {
item.setTitle(StringEscapeUtils.unescapeXml(chars.toString()));
} else {
feed.setTitle(StringEscapeUtils.unescapeXml(chars.toString()));
}
}
} else if (localName.equalsIgnoreCase("description")) {
if (isItem) {
item.setDescription(StringEscapeUtils.unescapeXml(chars.toString()));
} else {
feed.setDescription(StringEscapeUtils.unescapeXml(chars.toString()));
}
} else if (localName.equalsIgnoreCase("pubDate")) {
if (isItem) {
try {
item.setDate(dateFormat.parse(StringEscapeUtils.unescapeXml(chars.toString())));
} catch (Exception e) {
Log.e(LOG_CAT, "pubDate", e);
}
} else {
try {
feed.setDate(dateFormat.parse(StringEscapeUtils.unescapeXml(chars.toString())));
} catch (Exception e) {
Log.e(LOG_CAT, "pubDate", e);
}
}
} else if (localName.equalsIgnoreCase("item")) {
isItem = false;
} else if (localName.equalsIgnoreCase("link")) {
if (isItem) {
item.setLink(StringEscapeUtils.unescapeXml(chars.toString()));
} else {
feed.setLink(StringEscapeUtils.unescapeXml(chars.toString()));
}
}
if (localName.equalsIgnoreCase("item")) {}
}
//Goes through character by character when parsing whats inside of a tag.
@Override
public void characters(char[] ch, int start, int length) throws SAXException {
if (currentItem != null) {
//If parsingTitle is true, then that means we are inside a <title> tag so the text is the title of an item.
if (parsingTitle)
currentItem.setTitle(new String(ch, start, length));
//If parsingLink is true, then that means we are inside a <link> tag so the text is the link of an item.
else if (parsingLink)
currentItem.setLink(new String(ch, start, length));
//If parsingDescription is true, then that means we are inside a <description> tag so the text is the description of an item.
else if (parsingDescription)
currentItem.setDescription(new String(ch, start, length));
else if (parsingPubDate)
currentItem.setPubDate(new String(ch, start, length));
}
}
/**
* This is called to render a particular item for the on screen list. Uses an off-the-shelf
* TwoLineListItem view, which contains text1 and text2 TextViews. We pull data from the RssItem
* and set it into the view. The convertView is the view from a previous getView(), so we can
* re-use it.
*
* @see ArrayAdapter#getView
*/
@Override
public View getView(int position, View convertView, ViewGroup parent) {
TwoLineListItem view;
// Here view may be passed in for re-use, or we make a new one.
if (convertView == null) {
view = (TwoLineListItem) mInflater.inflate(android.R.layout.simple_list_item_2, null);
} else {
view = (TwoLineListItem) convertView;
}
RssItem item = this.getItem(position);
view.getText1().setText(item.getTitle());
return view;
}
public void displayData(RssItem item) {
TextView titulo = (TextView) findViewById(R.id.titulo);
TextView data = (TextView) findViewById(R.id.data);
TextView descricao = (TextView) findViewById(R.id.descricao);
ImageView imagem = (ImageView) findViewById(R.id.imagem);
if (item != null) {
titulo.setText(item.getTitulo());
data.setText(item.getData());
descricao.setText(item.getDescricao());
imagem.setImageBitmap(item.getImagem());
} else {
titulo.setText(null);
data.setText(null);
descricao.setText(null);
imagem.setImageBitmap(null);
}
}
public boolean insertToDB(RssItem item) {
// query if it already exit
Cursor cursor =
getContentResolver()
.query(
RSSApp.RssItems.CONTENT_URI,
PROJECTION,
RSSApp.RssItems.COLUMN_NAME_PUBDATE + "=" + "'" + item.getPubDate() + "'",
null,
null);
int count = 0;
if (cursor != null) {
count = cursor.getCount();
}
if (count == 0) {
ContentValues values = new ContentValues();
values.put(RSSApp.RssItems.COLUMN_NAME_TITLE, item.getTitle());
values.put(RSSApp.RssItems.COLUMN_NAME_DESCRIPTION, item.getDescription());
values.put(RSSApp.RssItems.COLUMN_NAME_PUBDATE, item.getPubDate());
Uri newUri = getContentResolver().insert(RSSApp.RssItems.CONTENT_URI, values);
if (newUri != null) {
log("insertToDB: " + newUri);
return true;
} else {
log("insertToDb: fail!");
}
} else {
mHandler.post(
new Runnable() {
@Override
public void run() {
Toast.makeText(getApplicationContext(), "no more update !", Toast.LENGTH_SHORT)
.show();
}
});
log("DB already has this record : title = " + item.getTitle());
}
return false;
}
//Called when an opening tag is reached, such as <item> or <title>
@Override
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
if (qName.equals("item"))
currentItem = new RssItem();
else if (qName.equals("title"))
parsingTitle = true;
else if (qName.equals("link"))
parsingLink = true;
else if (qName.equals("description"))
parsingDescription = true;
else if (qName.equals("pubDate"))
parsingPubDate = true;
else if (qName.equals("media:thumbnail") || qName.equals("media:content") || qName.equals("image")) {
if (attributes.getValue("url") != null)
currentItem.setImageUrl(attributes.getValue("url"));
}
}
public static List<RssItem> parse(String rssFeed, Activity activity) {
try {
Thread.sleep(6000);
} catch (InterruptedException e1) {
e1.printStackTrace();
}
List<RssItem> list = new ArrayList<RssItem>();
XmlPullParser parser = Xml.newPullParser();
InputStream stream = null;
try {
stream = new URL(rssFeed).openStream();
} catch (MalformedURLException e1) {
e1.printStackTrace();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
// auto-detect the encoding from the stream
parser.setInput(stream, null);
int eventType = parser.getEventType();
boolean done = false;
RssItem item = null;
while (eventType != XmlPullParser.END_DOCUMENT && !done) {
String name = null;
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
break;
case XmlPullParser.START_TAG:
name = parser.getName();
if (name.equalsIgnoreCase(ITEM)) {
Log.i("new item", "Create new item");
item = new RssItem();
} else if (item != null) {
if (name.equalsIgnoreCase(LINK)) {
Log.i("Attribute", "setLink");
item.setLink(parser.nextText());
} else if (name.equalsIgnoreCase(DESCRIPTION)) {
Log.i("Attribute", "description");
item.setDescription(parser.nextText().trim());
} else if (name.equalsIgnoreCase(PUB_DATE)) {
Log.i("Attribute", "date");
item.setPubDate(parser.nextText());
} else if (name.equalsIgnoreCase(TITLE)) {
Log.i("Attribute", "title");
item.setTitle(parser.nextText().trim());
}
}
break;
case XmlPullParser.END_TAG:
name = parser.getName();
Log.i("End tag", name);
if (name.equalsIgnoreCase(ITEM) && item != null) {
Log.i("Added", item.toString());
list.add(item);
} else if (name.equalsIgnoreCase(CHANNEL)) {
done = true;
}
break;
}
eventType = parser.next();
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return list;
}
/** rss item 문자열 생성 */
private static String rssItemStr(RssItem item) {
StringBuilder buffer = new StringBuilder();
buffer.append(" "); // 들여쓰기용
buffer.append("<item>");
if (item.getTitle() != null && !"".equals(item.getTitle()))
buffer.append("<title>" + "<![CDATA[" + item.getTitle() + "]]>" + "</title>");
if (item.getLink() != null && !"".equals(item.getLink()))
buffer.append("<link>" + item.getLink() + "</link>");
if (item.getDescription() != null && !"".equals(item.getDescription()))
buffer.append(
"<description>"
+ "<![CDATA["
+ item.getDescription().replaceAll(BR, "")
+ "]]>"
+ "</description>");
if (item.getAuthor() != null && !"".equals(item.getAuthor()))
buffer.append("<author>" + item.getAuthor() + "</author>");
if (item.getCategory() != null && !"".equals(item.getCategory()))
buffer.append("<category>" + "<![CDATA[" + item.getCategory() + "]]>" + "</category>");
if (item.getLink() != null && !"".equals(item.getLink()))
buffer.append("<guid>" + item.getLink() + "</guid>");
if (item.getPubDate() != null)
buffer.append("<pubDate>" + toRfc822DateFormat(item.getPubDate()) + "</pubDate>");
buffer.append("</item>");
return buffer.toString();
}
