android ListView a jeho dynamicke nacitavanie

public class ComentsAdapter extends BaseAdapter implements Filterable {

private List<Coment> originalData = null;
private List<Coment> filteredData = null;
private LayoutInflater mInflater;
private ItemFilter mFilter = new ItemFilter();

/**
* @param context
* @param resource
* @param objects
*/
public ComentsAdapter(Context context, List<Coment> data) {
this.filteredData = data;
this.originalData = data;
mInflater = LayoutInflater.from(context);
}

@Override
public View getView(int position, View view, ViewGroup parent) {
View updateView;
ViewHolder viewHolder;
if (view == null) {

updateView = mInflater.inflate(R.layout.coments_item, null);

viewHolder = new ViewHolder();

// Používate¾ské meno èloveka, ktorý napísal komentár
viewHolder.comentsUsernameView = (TextView) updateView
.findViewById(R.id.coments_item_login);

// Dátum a èas vytvorenia komentáru
viewHolder.comentsDateView = (TextView) updateView
.findViewById(R.id.coments_item_date);

// Textový obsah komentáru
viewHolder.comentsValueView = (TextView) updateView
.findViewById(R.id.coments_item_value);

updateView.setTag(viewHolder);
} else {
updateView = view;
viewHolder = (ViewHolder) updateView.getTag();
}

viewHolder.comentsUsernameView.setText(filteredData.get(position)
.getUsername().toString());
viewHolder.comentsDateView.setText(filteredData.get(position).getDate()
.toString());
viewHolder.comentsValueView.setText(filteredData.get(position)
.getValue().toString());

return updateView;
}

@Override
public int getCount() {
return filteredData.size();
}

@Override
public Coment getItem(int position) {
return filteredData.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

public Filter getFilter() {
return mFilter;
}

private class ItemFilter extends Filter {
@Override
protected FilterResults performFiltering(CharSequence constraint) {

String filterString = constraint.toString().toLowerCase();

FilterResults results = new FilterResults();

final List<Coment> list = originalData;

int count = list.size();
final ArrayList<Coment> nlist = new ArrayList<Coment>(count);

Coment filterableComent;

for (int i = 0; i < count; i++) {
filterableComent = list.get(i);
if (filterableComent.getValue().toLowerCase()
.contains(filterString)) {
nlist.add(filterableComent);
}
}

results.values = nlist;
results.count = nlist.size();
return results;
}

@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint,
FilterResults results) {
filteredData = (ArrayList<Coment>) results.values;
notifyDataSetChanged();
}
};

private static class ViewHolder {
public TextView comentsUsernameView;
public TextView comentsDateView;
public TextView comentsValueView;
}

/**
*
*/
public void clear() {
filteredData.clear();
notifyDataSetChanged();
}

/**
* @param com
*/
public void add(Coment com) {
filteredData.add(com);
notifyDataSetChanged();
}

}