Question

当我滚动ListView时为什么再次调用它相应的适配器？

我需要避免这种情况，因为当我滚动ListView

时会产生延迟

有什么人可以做什么？

编辑：这是我的适配器

public class CustomAdapter extends ArrayAdapter<MatchDTO> {

    public CustomAdapter(Context context, int resource, int textViewResourceId, List<MatchDTO> matches) {
        super(context, resource, textViewResourceId, matches);
    }

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

        try {

            ViewHolder viewHolder = null;

            if (convertView == null) {
                inflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                convertView = inflater.inflate(R.layout.matches_list, null);

                viewHolder = new ViewHolder();
                viewHolder.homeGoals = (TextView) convertView.findViewById(R.id.home_goals);
                viewHolder.awayGoals = (TextView) convertView.findViewById(R.id.away_goals);
                convertView.setTag(viewHolder);

            } else {
                viewHolder = (ViewHolder) convertView.getTag();
            }

            MatchDTO match = matches.get(position);

            viewHolder.homeGoals.setText(String.valueOf(match.getHomeGoals()));
            viewHolder.awayGoals.setText(String.valueOf(match.getAwayGoals()));

        } catch (Exception exception) {
        }

        return convertView;
    }

    class ViewHolder {

        TextView homeGoals;
        TextView awayGoals;
    }
}

Answer 1

请阅读此http://lucasr.org/2012/04/05/performance-tips-for-androids-listview/

并添加adapter.notifydatasetchanged()您在主要活动中调用CustomAdapter类的地方

ListView滚动再次调用适配器

1 个答案: