Android - AutoCompleteTextView dynamic updating issue

Question

well i'm trying to update the autoCompleteTextview ArrayAdapter dynamiclly each time text changed by using TextWathcer.

every time text changed there is an http request in a new AsyncTask and in the callback from the async task (onPostExecute) i call clear() from the adapter and adding new items to him and then call notifyDataSetChanged. Unfortunately the auto complete drop down is never shown..

please, where do i go worng?!

here is the code:

AutoCompleteTextView acCountry = (AutoCompleteTextView)layout.findViewById(R.id.autoComplete);
final ArrayAdapter<RMAutoComplete.ListItem> countriesAdapter = new ArrayAdapter<RMAutoComplete.ListItem>(this.context,android.R.layout.simple_dropdown_item_1line);
acCountry.addTextChangedListener(new TextWatcher() {

            public void onTextChanged(CharSequence s, int start, int before, int count) {
                if (s.length() > 1)
                {
                    new AsyncTask<String, Void, List<RMAutoComplete.ListItem>>(){

                        @Override
                        protected List<ListItem> doInBackground(String... params) {
                            List<ListItem> l = null;
                            try {
                                l = location.getCountryData(params[0]);
                            } catch (Exception e) {
                                Log.e(TAG,"error when getCountryData",e);
                            }
                            return l;
                        }

                        @Override
                        protected void onPostExecute(List<ListItem> countries) {
                            countriesAdapter.clear();
                            if (countries != null)
                                for (ListItem listItem : countries) {
                                    countriesAdapter.add(listItem);
                                }
                            countriesAdapter.notifyDataSetChanged();
                        }
                    }.execute(s.toString());
                }
            }

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

            public void afterTextChanged(Editable s) {}
        }
    );

Answer 1

Common mistake : Did you set the adapter to acCountry at all?