如何获得RSS提要的Android? [英] How to get rss feeds android?
问题描述
我在这里有这个网址: http://www.webpronews.com/feeds
I have this url here: http://www.webpronews.com/feeds
现在我需要获得饲料和Android中显示。任何线索?
Now i need to get the feeds and display it in android. Any clue?
推荐答案
我用lib xmlpull_1_1_3_4c.jar以及读Twitter的饲料(RSS),如下图所示。
I use the lib xmlpull_1_1_3_4c.jar and for example read twitter feeds (rss) like below.
XML拉是开源的。你只需要根据自己的饲料来调整标签。如果你不能找到罐子网上,我可以通过电子邮件发送给你。我不记得在那里我从得到它,它曾经是在xmlpull.org,但不知道在哪里现在。 我得到了它的地方,从 http://www.ibm.com/developerworks/链接开源/库/ X-的Android /
XML Pull is open source. You just need to adjust the tags according to your feed. If you cannot find the jar online, I can email it to you. I don't remember where I got it from, it used to be at xmlpull.org, but not sure where it is now. I got it somewhere linked from http://www.ibm.com/developerworks/opensource/library/x-android/
import org.developerworks.android.FeedParser;
import org.developerworks.android.FeedParserFactory;
import org.developerworks.android.Message;
import org.developerworks.android.ParserType;
import org.xmlpull.v1.XmlSerializer;
....
loadFeed(ParserType.ANDROID_SAX);
....
private void loadFeed(ParserType type){
try{
Log.i("AndroidNews", "ParserType="+type.name());
FeedParser parser = FeedParserFactory.getParser(type);
long start = System.currentTimeMillis();
messages = parser.parse();
long duration = System.currentTimeMillis() - start;
String xml = writeXml();
titles = new ArrayList<String>(messages.size());
for (Message msg : messages){
titles.add(msg.getTitle());
}
} catch (Throwable t){
Log.e("AndroidNews",t.getMessage(),t);
}
}
private String writeXml() {
XmlSerializer serializer = Xml.newSerializer();
StringWriter writer = new StringWriter();
try {
serializer.setOutput(writer);
serializer.startDocument("UTF-8", true);
serializer.startTag("", "messages");
serializer.attribute("", "number", String.valueOf(messages.size()));
for (Message msg: messages){
serializer.startTag("", "message");
serializer.attribute("", "date", msg.getDate());
serializer.startTag("", "title");
serializer.text(msg.getTitle());
serializer.endTag("", "title");
serializer.startTag("", "url");
serializer.text(msg.getLink().toExternalForm());
serializer.endTag("", "url");
serializer.startTag("", "body");
serializer.text(msg.getDescription());
serializer.endTag("", "body");
serializer.endTag("", "message");
}
serializer.endTag("", "messages");
serializer.endDocument();
return writer.toString();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
编辑:
这是填充料,以列表视图,使用ArrayAdapter整个类,有任何数据库中没有光标虽然,因为我不在本地存储提要:
This is the entire class that populates the feeds to a list view, using a ArrayAdapter, there's no cursor on any database though, since I don't store the feeds locally:
import android.app.ProgressDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.text.Html;
import android.util.Log;
import android.util.Xml;
import android.view.Gravity;
import android.view.View;
import android.widget.*;
import org.developerworks.android.FeedParser;
import org.developerworks.android.FeedParserFactory;
import org.developerworks.android.Message;
import org.developerworks.android.ParserType;
import org.xmlpull.v1.XmlSerializer;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.List;
public class Twitter extends BaseActivity implements
AdapterView.OnItemClickListener {
private List<Message> messages;
private List<String> titles;
//TweetsAdapter ta = new TweetsAdapter(this);
public ListView lstTweets = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.twitter);
// set header title
((TextView)findViewById(R.id.txtHeaderTitle)).setText( Html.fromHtml("<b>" + getResources().getString(R.string.activity_title_twitter) +"</b>"));
// highlight icon
ImageButton btn = (ImageButton)findViewById(R.id.btnTwitter);
btn.setBackgroundResource(R.drawable.menu_icon_twitter_active);
// load list of tweets
lstTweets = (ListView)findViewById(R.id.lstTweets);
lstTweets.setOnItemClickListener(this);
new AsyncTask<Void, Void, Void>() {
ProgressDialog p;
boolean success = false;
@Override
protected void onPostExecute(Void aVoid) {
p.dismiss();
if (!success) {
Twitter.this.runOnUiThread(new Runnable() {
public void run() {
Toast toast = Toast.makeText(Twitter.this, "Sorry, could not connect to Twitter.", Toast.LENGTH_LONG);
toast.setGravity(Gravity.CENTER_VERTICAL|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
}
});
} else {
ArrayAdapter<String> adapter =
new ArrayAdapter<String>(Twitter.this, R.layout.twitter_list_row,titles);
lstTweets.setAdapter(adapter);
}
}
@Override
protected void onPreExecute() {
p = ProgressDialog.show(Twitter.this,"Loading...","...please wait a moment.");
}
@Override
protected Void doInBackground(Void... params) {
try {
loadFeed(ParserType.ANDROID_SAX);
if (messages!=null&&messages.size()>0) success = true;
} catch (RuntimeException e) {}
catch (Exception e) {}
return null;
}
}.execute();
}
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {
Intent viewMessage = new Intent(Intent.ACTION_VIEW,
Uri.parse(messages.get(position).getLink().toExternalForm()));
this.startActivity(viewMessage);
}
private void loadFeed(ParserType type){
try{
Log.i("AndroidNews", "ParserType="+type.name());
FeedParser parser = FeedParserFactory.getParser(type);
long start = System.currentTimeMillis();
messages = parser.parse();
long duration = System.currentTimeMillis() - start;
String xml = writeXml();
titles = new ArrayList<String>(messages.size());
for (Message msg : messages){
titles.add(msg.getTitle());
}
} catch (Throwable t){
Log.e("AndroidNews",t.getMessage(),t);
}
}
private String writeXml(){
XmlSerializer serializer = Xml.newSerializer();
StringWriter writer = new StringWriter();
try {
serializer.setOutput(writer);
serializer.startDocument("UTF-8", true);
serializer.startTag("", "messages");
serializer.attribute("", "number", String.valueOf(messages.size()));
for (Message msg: messages){
serializer.startTag("", "message");
serializer.attribute("", "date", msg.getDate());
serializer.startTag("", "title");
serializer.text(msg.getTitle());
serializer.endTag("", "title");
serializer.startTag("", "url");
serializer.text(msg.getLink().toExternalForm());
serializer.endTag("", "url");
serializer.startTag("", "body");
serializer.text(msg.getDescription());
serializer.endTag("", "body");
serializer.endTag("", "message");
}
serializer.endTag("", "messages");
serializer.endDocument();
return writer.toString();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
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