我制作了一个rss阅读器，它在设备上显示rss feed文本。现在我还有一个问题。文本始终显示<p>等标记。我该如何删除它们？
这是我的所有代码！
package com.example.MPAK.mynewsappfragment;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
public class DisplayActivity extends Activity{
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_display);
Intent intent = getIntent();
((TextView) (findViewById(R.id.Text))).setText(intent.getExtras().getString("test"));
}
}
package com.example.MPAK.mynewsappfragment;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;
public class MainActivity extends FragmentActivity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if (savedInstanceState == null) {
addRssFragment();
}
}
private void addRssFragment() {
android.app.FragmentManager manager = getFragmentManager();
android.app.FragmentTransaction transaction = manager.beginTransaction();
RssFragment fragment = new RssFragment();
transaction.add(R.id.fragment_container,fragment);
transaction.commit();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean("fragment_added", true);
}
}
package com.example.MPAK.mynewsappfragment;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import java.util.List;
public class RssAdapter extends BaseAdapter {
private final List<RssItem> items;
private final Context context;
public RssAdapter(Context context, List<RssItem> items) {
this.items = items;
this.context = context;
}
@Override
public int getCount() {
return items.size();
}
@Override
public Object getItem(int position) {
return items.get(position);
}
@Override
public long getItemId(int id) {
return id;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = View.inflate(context, R.layout.rss_item, null);
holder = new ViewHolder();
holder.itemTitle = (TextView) convertView.findViewById(R.id.itemTitle);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.itemTitle.setText(items.get(position).getTitle());
return convertView;
}
static class ViewHolder {
TextView itemTitle;
}
}
package com.example.MPAK.mynewsappfragment;
import android.app.Fragment;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.ResultReceiver;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Toast;
import java.util.List;
public class RssFragment extends Fragment implements AdapterView.OnItemClickListener {
private ProgressBar progressBar;
private ListView listView;
private View view;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setRetainInstance(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view == null) {
view = inflater.inflate(R.layout.fragment_layout, container, false);
progressBar = (ProgressBar) view.findViewById(R.id.progressBar);
listView = (ListView) view.findViewById(R.id.listView);
listView.setOnItemClickListener(this);
startService();
} else {
// If we are returning from a configuration change:
// "view" is still attached to the previous view hierarchy
// so we need to remove it and re-attach it to the current one
ViewGroup parent = (ViewGroup) view.getParent();
parent.removeView(view);
}
return view;
}
private void startService() {
Intent intent = new Intent(getActivity(), RssService.class);
intent.putExtra(RssService.RECEIVER, resultReceiver);
getActivity().startService(intent);
}
/**
* Once the {@link RssService} finishes its task, the result is sent to this ResultReceiver.
*/
private final ResultReceiver resultReceiver = new ResultReceiver(new Handler()) {
@SuppressWarnings("unchecked")
@Override
protected void onReceiveResult(int resultCode, Bundle resultData) {
List<RssItem> items = (List<RssItem>) resultData.getSerializable(RssService.ITEMS);
if (items != null) {
RssAdapter adapter = new RssAdapter(getActivity(), items);
listView.setAdapter(adapter);
} else {
Toast.makeText(getActivity(), "An error occured while downloading the rss feed.",
Toast.LENGTH_LONG).show();
}
progressBar.setVisibility(View.GONE);
listView.setVisibility(View.VISIBLE);
};
};
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
RssAdapter adapter = (RssAdapter) parent.getAdapter();
RssItem item = (RssItem) adapter.getItem(position);
String test = item.getDescription();
//Uri uri = Uri.parse(item.getLink());
Intent intent = new Intent(getActivity(),DisplayActivity.class);
intent.putExtra("test",(item.getDescription()));
startActivity(intent);
}
}
package com.example.MPAK.mynewsappfragment;
public class RssItem {
private final String title;
private final String description;
public RssItem(String title, String description) {
this.title = title;
this.description = description;
}
public String getTitle() {
return title;
}
public String getDescription() {
return description;
}
}
`package com.example.MPAK.mynewsappfragment;
import android.util.Xml;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
public class RssParser {
// We don't use namespaces
private final String ns = null;
public List<RssItem> parse(InputStream inputStream) throws XmlPullParserException, IOException {
try {
XmlPullParser parser = Xml.newPullParser();
parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
parser.setInput(inputStream, null);
parser.nextTag();
return readFeed(parser);
} finally {
inputStream.close();
}
}
private List<RssItem> readFeed(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, null, "rss");
String title = null;
String description = null;
List<RssItem> items = new ArrayList<RssItem>();
while (parser.next() != XmlPullParser.END_DOCUMENT) {
if (parser.getEventType() != XmlPullParser.START_TAG) {
continue;
}
String name = parser.getName();
if (name.equals("title")) {
title = readTitle(parser);
} else if (name.equals("description")) {
description = readDescription(parser);
}
if (title != null && description != null) {
RssItem item = new RssItem(title, description);
items.add(item);
title = null;
description = null;
}
}
return items;
}
private String readDescription(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, ns, "description");
String description = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "description");
return description;
}
private String readTitle(XmlPullParser parser) throws XmlPullParserException, IOException {
parser.require(XmlPullParser.START_TAG, ns, "title");
String title = readText(parser);
parser.require(XmlPullParser.END_TAG, ns, "title");
return title;
}
// For the tags title and description, extract their text values.
private String readText(XmlPullParser parser) throws IOException, XmlPullParserException {
String result = "";
if (parser.next() == XmlPullParser.TEXT) {
result = parser.getText();
parser.nextTag();
}
return result;
}
}
package com.example.MPAK.mynewsappfragment;
import android.app.IntentService;
import android.content.Intent;
import android.os.Bundle;
import android.os.ResultReceiver;
import android.util.Log;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URL;
import java.util.List;
public class RssService extends IntentService {
private static final String RSS_LINK = "http://www.pcworld.com/index.rss";
public static final String ITEMS = "items";
public static final String RECEIVER = "receiver";
public RssService() {
super("RssService");
}
@Override
protected void onHandleIntent(Intent intent) {
Log.d("TAG", "Service started");
List<RssItem> rssItems = null;
try {
RssParser parser = new RssParser();
rssItems = parser.parse(getInputStream(RSS_LINK));
} catch (XmlPullParserException e) {
Log.w(e.getMessage(), e);
} catch (IOException e) {
Log.w(e.getMessage(), e);
}
Bundle bundle = new Bundle();
bundle.putSerializable(ITEMS, (Serializable) rssItems);
ResultReceiver receiver = intent.getParcelableExtra(RECEIVER);
receiver.send(0, bundle);
}
public InputStream getInputStream(String link) {
try {
URL url = new URL(link);
return url.openConnection().getInputStream();
} catch (IOException e) {
Log.w("TAG", "Exception while retrieving the input stream", e);
return null;
}
}
}
任何想法？
在generel中，它会打开一个xml文件。读取主题，将其保存在列表中。 如果我点击主题，它会打开一个显示文本的新活动。该文本的一个例子是：
<p> Weell,well,well what have we here: no less then three independent&nsbsp;confirmations that <a=href="http ...................... and so on.
So it just reads the whole text but ignres the html tags or lets say it displays them instead of using them.