0
RSSフィードからイメージを取得してlistviewに表示する方法を教えてください。私のすべてが動作しています...しかし、イメージフォームのURLを取得することができません..私はイメージのための関数を書いてもlode ..しかし、使用するためのURL文字列を取ることができません。私はURLを表示することはできますが。 私が試したコード..イメージフォームを取得する方法RSSフィードとストアintリストビュー？
public class RssFeedExampleTestImageActivity extends ListActivity
{
private ArrayList<RSSIteam> itemlist = null;
private RSSListAdaptor rssadaptor = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
itemlist = new ArrayList<RSSIteam>();
new RetrieveRSSFeeds().execute();
RSSListAdaptor adapter = new RSSListAdaptor(this, R.layout.main, itemlist);
setListAdapter(adapter);
}
//Function for loading image from web
public static Drawable LoadImageFromWeb(String uri)
{
try
{
InputStream is = (InputStream) new URL(uri).getContent();
Drawable d = Drawable.createFromStream(is, "src name");
return d;
}
catch (Exception e)
{
return null;
}
}
private void retrieveRSSFeed(String urlToRssFeed,ArrayList<RSSIteam> list)
{
try
{
URL url = new URL(urlToRssFeed);
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
XMLReader xmlreader = parser.getXMLReader();
RSSParser theRssHandler = new RSSParser(list);
xmlreader.setContentHandler(theRssHandler);
InputSource is = new InputSource(url.openStream());
xmlreader.parse(is);
}
catch (Exception e)
{
e.printStackTrace();
}
}
private class RetrieveRSSFeeds extends AsyncTask<Void, Void, Void>
{
private ProgressDialog progress = null;
@Override
protected Void doInBackground(Void... params)
{
/*RSSIteam data = null;
Uri custuri = Uri.parse(data.imageurl);
String str = custuri.toString();
LoadImageFromWeb(str);
*/
retrieveRSSFeed("http://some_url",itemlist);
rssadaptor = new RSSListAdaptor(RssFeedExampleTestImageActivity.this, R.layout.customlist, itemlist);
return null;
}
@Override
protected void onCancelled()
{
super.onCancelled();
}
@Override
protected void onPostExecute(Void result)
{
setListAdapter(rssadaptor);
progress.dismiss();
super.onPostExecute(result);
}
@Override
protected void onPreExecute()
{
progress = ProgressDialog.show(RssFeedExampleTestImageActivity.this, null, "Loading RSS Feeds...");
super.onPreExecute();
}
@Override
protected void onProgressUpdate(Void... values)
{
super.onProgressUpdate(values);
}
}
private class RSSListAdaptor extends ArrayAdapter<RSSIteam>
{
private List<RSSIteam> objects = null;
public RSSListAdaptor(Context context, int textViewResourceId, List<RSSIteam> objects)
{
super(context, textViewResourceId, objects);
this.objects = objects;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
View view = convertView;
if(null == view)
{
LayoutInflater vi = (LayoutInflater)RssFeedExampleTestImageActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = vi.inflate(R.layout.customlist, null);
}
RSSIteam data = objects.get(position);
if(null != data)
{
Drawable imgLoad = null;
TextView title = (TextView)view.findViewById(R.id.txtViewTitle);
TextView description = (TextView)view.findViewById(R.id.txtViewDescription);
TextView imagetxt = (TextView)view.findViewById(R.id.txtViewImageUrl);
ImageView imageLoge = (ImageView)view.findViewById(R.id.imgViewLogo);
title.setText(data.title);
description.setText(data.description);
imagetxt.setText(data.imageurl);
/*imageLoge.setVisibility(View.VISIBLE);
imageLoge.setBackgroundDrawable(imgLoad);*/
}
return view;
}
}
}