Weather app dialog

private Dialog createDialog() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    LayoutInflater inflater = this.getLayoutInflater();
    View v = inflater.inflate(R.layout.select_city_dialog, null);
    builder.setView(v);
 
    EditText et = (EditText) v.findViewById(R.id.ptnEdit);
    ....
    et.addTextChangedListener(new TextWatcher() {
         ....
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            if (count > 3) {
                // We start searching
                weatherclient.searchCity(s.toString(), new WeatherClient.CityEventListener() {
                    @Override
                    public void onCityListRetrieved(List<City> cities) {
                        CityAdapter ca = new CityAdapter(WeatherActivity.this, cities);
                        cityListView.setAdapter(ca);
 
                    }
 
                });
            }
        }
 
    });
    builder.setPositiveButton("Accept", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
            // We update toolbar
            toolbar.setTitle(currentCity.getName() + "," + currentCity.getCountry());
            // Start getting weather
            getWeather();
        }
    });
 
    builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
        }
    });
 
    return builder.create();
}