android - ListView 中的评级栏评级重置

Question

Senario:获取多个产品的评级反馈。

问题:通过调用 setOnRatingBarChangeListener

在滚动 ListView 上重置 Ratingbar 值

预期输出:

自定义 ListView 适配器代码:

public class FeedbackAdapter extends BaseAdapter {

    static Context context;
    List<FeedbackRowDetails> row;
    ViewHolder holder;
    public FeedbackAdapter(Context context,List<FeedbackRowDetails> row)
    {
        this.context = context;
        this.row =row;
    }

    private class ViewHolder {
        TextView tv_slno, tv_productname, tv_time;
        RatingBar rb_productrating;

    }

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

        LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

        if (convertView == null) 
        {

            convertView = mInflater.inflate(R.layout.custom_feedback_row_format,null);
            holder = new ViewHolder();
            holder.tv_slno = (TextView) convertView.findViewById(R.id.tv_slno);
            holder.tv_time = (TextView) convertView.findViewById(R.id.tv_time);
            holder.tv_productname = (TextView) convertView.findViewById(R.id.tv_productname);
            holder.rb_productrating=(RatingBar) convertView.findViewById(R.id.rb_productrating);
            convertView.setTag(holder);

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

        FeedbackRowDetails row_pos = row.get(position);

        holder.tv_slno.setText(String.valueOf(position + 1));
        holder.tv_time.setText(row_pos.gettime());
        holder.tv_productname.setText(row_pos.getproductsName());
        holder.rb_productrating.setRating(Float.valueOf(row_pos.getrating()));

        holder.rb_productrating.setOnRatingBarChangeListener(new OnRatingBarChangeListener() 
        {
            public void onRatingChanged(RatingBar ratingBar, float rating,boolean fromUser) 
            {
                FeedbackRowDetails row_pos = row.get(position);
                int roundoff_rating = (int)Math.round(rating);
                ratingBar.setRating(roundoff_rating);
                row_pos.setrating(String.valueOf(roundoff_rating));

            }
        });

        return convertView;

    }

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

    @Override
    public Object getItem(int position) {
        return row.get(position);
    }

    @Override
    public long getItemId(int position) {
        return row.indexOf(getItem(position));
    }

}

Answer 1

只需用一个简单的 if 将您的代码包装在您的 onRatingChanged 方法中，如下所示

if(fromUser) {
                FeedbackRowDetails row_pos = row.get(position);
                int roundoff_rating = (int) Math.round(rating);
                ratingBar.setRating(roundoff_rating);
                row_pos.setRating(String.valueOf(roundoff_rating));
            }

已使用模拟器对其进行测试，它按预期工作。希望这能解决您的问题