ClassCashException on PullToRefreshListView - android-listview

Question

I am trying to implement the PullToRefresh using ListView from eu.erikw.PullToRefreshListView project. I am using custom adapter to populate my listview. However on onItemClick event, I get this error java.lang.ClassCastException: android.widget.HeaderViewListAdapter cannot be cast to com.example.xxapp.RssAdapter where my RssAdapter class is
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());
}
static class ViewHolder {
TextView itemTitle;
}
}
and RssItem class is
public class RssItem {
private final String title;
private final String link;
public RssItem(String title, String link) {
this.title = title;
this.link = link;
}
public String getTitle() {
return title;
}
public String getLink() {
return link;
}
}
and this is the onclick method giving the error
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.e("Clicked item", "Position is " +position);
//line below gives ClasscastException error
RssAdapter adapter = (RssAdapter) parent.getAdapter();
RssItem item = (RssItem) adapter.getItem(position);
Uri uri = Uri.parse(item.getLink());
Intent i = new Intent(getActivity(),WebViewActivity.class);
i.putExtra("mystring",uri.toString());
startActivity(i);
}
Please I need help with the onclick method so I can get the link to display a webpage.

Answer 1

I have figured out a way. Before I set the adapter to the listview, I create another listarray with the same form as the RssItem so I can assign the adapter to this listarray. Later on when I need this adapter, I just call the new listarray which in this case is not affected by the header I added to the listview. Thanks njzk2 for your comment about keeping my adapter as an instance member. The solution looks like this:
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.e("Clicked item", "Position is " +position);
TextView title = (TextView) view.findViewById(R.id.itemTitle);
String titleItem = title.getText().toString();
Log.e("Title", titleItem);
//RssAdapter adapter = (RssAdapter) parent.getAdapter();
//RssItem item = (RssItem) adapter.getItem(position);
RssItem item = itemx.get(position);
Uri uri = Uri.parse(item.getLink());
Intent i = new Intent(getActivity(),WebViewActivity.class);
i.putExtra("mystring",uri.toString());
startActivity(i);
}
where itemx is the instance of my adapter. I don't know how effective it is to do this but it worked

Answer 2

You should use that
HeaderViewListAdapter hlva = (HeaderViewListAdapter)parent.getAdapter();
RssAdapter adapter = (RssAdapter)hlva.getWrappedAdapter();