He añadido un onTextChangedListener a mi vista de texto autocompletada y la relleno utilizando una tarea asíncrona

mAutoComplete.addTextChangedListener(new TextWatcher() {
    public void beforeTextChanged(CharSequence s, int start, int count,
            int after) {
    }
    public void onTextChanged(CharSequence s, int start, int before,
            int count) {
        //run an async tast to get autocompletes
    }
    @Override
    public void afterTextChanged(Editable s) {
    }
});

private class getAutoCompletes extends AsyncTask<String, Void, String> {
    @Override
    protected String doInBackground(String... params) {
        //get autocompletes
    }
    @Override
    protected void onPostExecute(String result) {
        //create an adapter
        mAdapter AutoCompleteAdapter = new mAdapter(
                mActivity.this,
                R.layout.m_layout,
                R.id.m_id, autocompletesList);
        //set it to the autocomplete textview
        mAutoComplete.setAdapter(AutoCompleteAdapter);
        //show the dropdown
        mAutoComplete.showDropDown();
    }
}

Luego tengosetOnItemClickListener(new AdapterView.OnItemClickListener() {} en el mAutoComplete. Pero no hacer nada en ello.

Todavía obtengo la representación en cadena del adaptador como texto en mAutoComplete, cuando hago clic en cualquier elemento del menú desplegable

com.xxxx.app.mAdapter@4342ca0

No donde estoy configurando el texto para el mAutoComplete.

EDITAR:

Clase de adaptador:

public class mAdapter extends ArrayAdapter<customDS> {

    private LayoutInflater mInflater = null;
    private Context ctx;
    public ArrayList<customDS> values = new ArrayList<customDS>();

    public mAdapter(Context context, int resource,
            int textViewResourceId, ArrayList<customDS> objects) {
        super(context, resource, textViewResourceId, objects);
        values = objects;
        ctx = context;
        mInflater = (LayoutInflater) ctx
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    public int getCount() {
        return values.size();
    }

    public customDS getItem(int position) {
        return values.get(position);
    }

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

    public static class ViewHolder {
        public TextView title;
        public TextView description;
    }

    public View getView(final int position, View convertView, ViewGroup parent) {

        ViewHolder holder;
        if (convertView == null) {
            holder = new ViewHolder();
            convertView = mInflater.inflate(R.layout.m_layout,
                    parent, false);
            holder.title = (TextView) convertView
                    .findViewById(R.id.m_id);
            holder.description = (TextView) convertView
                    .findViewById(R.id.m_id2);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.title.setText(values.get(position).title);
        holder.description.setText(values.get(position).description);

        return convertView;
    }
}