SearchablesListAdapter.java

public class SearchablesListAdapter extends BaseAdapter {

    private interface Searchable {
        String getSearchableName();
    }

    private class Country implements Searchable {

        @Override
        public String getSearchableName() {
            return "myname";
        }
    }

    private class OtherModel implements Searchable{

        @Override
        public String getSearchableName() {
            return "myname";
        }
    }

    private Context context;
    private List<? extends Searchable> searchables;

    protected SearchablesListAdapter(Context context, List<? extends Searchable> searchables) {
        super();
        this.context = context;
        this.searchables = searchables;
    }

    @Override
    public int getCount() {
        return searchables.size();
    }

    @Override
    public Searchable getItem(int position) {
        return searchables.get(position);
    }

    @Override
    public long getItemId(int position) {
        // TODO There is no id?
        return position;
    }

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

        String text = getItem(position).getSearchableName();

        return convertView;
    }
}