RSSフィードからデータを取得してフラグメント(11フラグメント)で表示しようとしていますが、データをフェッチしているため、UIブロックを数秒間新しいフラグメントに渡すたびに、asyncTaskを使用してバックグラウンドでこれを実行しようとしていますしかし、それは機能しないようです。
public class AndroidSaxFeedParser extends AsyncTask<String, Long, ArrayList<Article>>{
String dt;
String bb;
String nameCat;
RootElement root;
Element item;
static final String RSS = "rss";
static final String FEED = "feed";
static final String ENTRY = "entry";
static final String CHANNEL = "channel";
static final String PUB_DATE = "pubDate";
static final String DESCRIPTION = "description";
static final String LINK = "link";
static final String TITLE = "title";
static final String ITEM = "item";
static final String CATEGORY = "category";
static final String DURATION = "itunes:duration";
ArrayList<Article> rssItems = new ArrayList<Article>();
public URL feedUrl;
Context mContext;
public AndroidSaxFeedParser(Context context)
{
mContext = context;
}
// ProgressDialog pd = new ProgressDialog(mContext);
@Override
protected void onPostExecute(ArrayList<Article> result) {
// pd.dismiss();
super.onPostExecute(result);
}
@Override
protected void onPreExecute() {
// ProgressDialog.show(mContext, "", "Chargement...");
super.onPreExecute();
}
@Override
protected ArrayList<Article> doInBackground(String... params) {
try {
feedUrl = new URL(params[0]);
} catch (MalformedURLException e1) {
e1.printStackTrace();
}
final Article currentRssItem = new Article();
root = new RootElement(RSS);
Element channel = root.getChild(CHANNEL);
item = channel.getChild(ITEM);
item.getChild(TITLE).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentRssItem.setTitle(body);
Log.i("Title Article", " "+currentRssItem.getTitle());
}
});
item.getChild(CATEGORY).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentRssItem.setCategorie(body);
Log.i("Category Article", " "+currentRssItem.getCategorie());
}
});
item.getChild(DESCRIPTION).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
String imgUrl, desc;
try {imgUrl = body.substring(body.indexOf("src=")+5,body.indexOf("\"", body.indexOf("src=")+6));}
catch (Exception e)
{imgUrl = "";}
try {desc=body;}
catch (Exception e)
{ desc = "";}
currentRssItem.setImageUrl(imgUrl);
currentRssItem.setDescription(desc);
Log.i("Image URL Article", " "+currentRssItem.getImageUrl());
Log.i("Description Article", " "+currentRssItem.getDescription());
}
});
item.getChild(PUB_DATE).setEndTextElementListener(new EndTextElementListener(){
public void end(String body) {
currentRssItem.setPubDate(body);
Log.i("Date Article", " "+currentRssItem.getPubDate());
}
});
item.setEndElementListener(new EndElementListener(){
public void end() {
rssItems.add(currentRssItem.copy());
}
});
try {
Xml.parse(feedUrl.openConnection().getInputStream(), Xml.Encoding.UTF_8, root.getContentHandler());
} catch (IOException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
}
return rssItems;
}
私はそれを各フラグメントでこのように呼んでいます
ArrayList<Article> feeds ;
try {
feeds=AndroidSaxFeedParser.execute(url).get();
} catch (InterruptedException e) {
e.printStackTrace();
} catch (ExecutionException e) {
e.printStackTrace();
}