Custom filtering for Custom ArrayAdapter in ListView

Question

i write a own ArrayAdapter like this one:

public class PoiListAdapter extends ArrayAdapter implements Filterable {

    private Context context;
          


        

Answer 1

The for-each loop use an Iterator internally, and you can not add nothing to your collection while you are iterating (that's why of the exception). Try creating a new instance of the ArrayList and interate upon it

@SuppressWarnings("unchecked")
@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
    ArrayList fitems = new ArrayList((ArrayList) results.values);
    poiListAdapter.clear();
    for (Poi p : fitems) {
        poiListAdapter.addValuesPoi(p);
        poiListAdapter.notifyDataSetChanged();
    }
}

the for-each is something like:

for(Iterator i = fitms.iterator(); i.hasNext(); ) {
  Poi item = i.next();    
}

Problem 2:

The List is empty at start probably because the dataset you submit is empty