How to add a custom adapter to an AutoCompleteTextView

Question

Is there any simple way to set a 2 TextView dropdown to an AutoCompleteTextView.

There is android.R.layout.two_line_list_item Which I couldn\'t find any exa

Answer 1

According to the documentation, the inferred type of setAdapter in AutoCompleteTextView is :

 void setAdapter(T adapter)

Your adapter must be a ListAdapter (which BaseAdapter is, so far so good) and a Filterable, which BaseAdapter is not, nor is your Adapter implementation. I would extend an ArrayAdapter, which is Filterable, not to mention is would simplify your implementation (some of your methods duplicate methods of ArrayAdapter for the same result) :

public class TwoLineDropdownAdapter extends ArrayAdapter {

    private LayoutInflater mInflater = null;
    private Activity activity;

    public TwoLineDropdownAdapter(Activity a, ArrayList items) {
        super(a, 0, items);
        activity = a;
        mInflater = (LayoutInflater) activity
                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    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.dropdown_text_twoline,
                    parent, false);
            holder.title = (TextView) convertView
                    .findViewById(R.id.text1);
            holder.description = (TextView) convertView
                    .findViewById(R.id.text2);

            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }

        return convertView;
    }
}