android - ListView 项目中的 SeekBar 已重置

Question

在我的应用程序中，我有一个带有自定义项目 View 的 ListView。每个 Item 都有一个自己的 SeekBar，其中包含显示在 ListView 中的不同 Persons 的年龄。我的问题是我可以为每个人滚动 SeekBar，但是如果下次将 SeekBar 重置为 0 时，该项目滚出并进入。我的 CustomAdapter 如下所示:

public View getView(int position, View convertView, ViewGroup parent) 
{
    View row = convertView;
    PeopleHolder holder = null;

    if(row == null)
    {
        LayoutInflater inflater = LayoutInflater.from(context);
        row = inflater.inflate(layoutResourceId, parent, false);

        holder = new PeopleHolder();

        final TextView tvAge = (TextView) row.findViewById(R.id.Age);
        tvNote.setTag(position);

        holder.age = (SeekBar) row.findViewById(R.id.agekBar); 
        holder.age.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
        {
            @Override
            public void onStopTrackingTouch(SeekBar seekBar){   }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar){   }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
            {
                    tvAge.setText("" + progress);
            }
        }); 

        holder.name  = (TextView) row.findViewById(R.id.Name);
        row.setTag(holder);
    }
    else
    {
        holder = (PeopleHolder) row.getTag();
    }

    People p = data.get(position);

    holder.name.setText(p.getFullName());
    holder.age.setProgress(p.getAge());

    return row;
}

private static class PeopleHolder
{
    TextView name;
    SeekBar age;
}

Answer 1

一定要在进度改变的时候改变人物年龄的值:

    // adding a final int that can be accessed from inside the listener
    final int personPosition = position;
    holder.age.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
    {
        ...

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
        {
                tvAge.setText("" + progress);
                // change the age of the person in data
                data.get(personPosition).setAge(progress);
        }
    });