ListView 在 Scroll 上改变数据

Question

我有一个 ListView，它在创建时正确填充了一个数组，但是当我滚动时，数据发生变化并且全部乱序。我不知道问题出在我的 CustomListViewAdapter 还是我的 DetailsPage 中。这是我用来生成 textViews:

的 For Loop

if (currentObject.setTime != null && currentObject.setName != null) {
            String[] temporaryNames = currentObject.setName;
            int totalNames = (currentObject.setTime.length / currentObject.setName.length);

            for (int i = 1; i < totalNames; i++) {
                currentObject.setName = ArrayUtils.addAll(currentObject.setName,temporaryNames);
            }
        }

    listView.setAdapter(new BusRouteCustomListViewAdapter(this, currentObject.setName, currentObject.setTime));

这是我的 customListViewAdapter:

的代码

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

    Holder holder = new Holder();
    View v = convertView;
    if (v == null)
        if (locations[position] != null && times[position] != null) {
            v = inflater.inflate(R.layout.busdetailrow, null);

            holder.tv1 = (TextView) v.findViewById(R.id.text);
            holder.tv2 = (TextView) v.findViewById(R.id.text2);
            holder.tv1.setText(locations[position]);
            holder.tv2.setText(times[position]);

        } else {

            v = inflater.inflate(R.layout.null_row, null);
        }

    return v;
}

Answer 1

像下面那样使用您的 getView()。

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    Holder holder = new Holder();
    if (convertView == null){
        if (locations[position] != null && times[position] != null) {
            convertView = inflater.inflate(R.layout.busdetailrow, null);
            holder.tv1 = (TextView) v.findViewById(R.id.text);
            holder.tv2 = (TextView) v.findViewById(R.id.text2);
            holder.tv1.setText(locations[position]);
            holder.tv2.setText(times[position]);
        } else {

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

Answer 2

您用这些代码行替换代码

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

    final Holder holder;
    View v = convertView;
    if (v == null)
        {

           holder = new Holder();
            v = inflater.inflate(R.layout.busdetailrow, null);

            holder.tv1 = (TextView) v.findViewById(R.id.text);
            holder.tv2 = (TextView) v.findViewById(R.id.text2);

        v.setTag(holder);
        } else {

           holder = (Holder) v.getTag();
        }

            holder.tv1.setText(locations[position]);
            holder.tv2.setText(times[position]);

    return v;
 }

Answer 3

你可能没有实现设计持有者。对您的 getView 进行以下更改，然后它将正常工作

  @Override
 public View getView(int position, View convertView, ViewGroup parent) {
Holder holder = new Holder();
if (convertView == null){

    if (locations[position] != null && times[position] != null) {
        convertView = inflater.inflate(R.layout.busdetailrow, null);
        holder.tv1 = (TextView) v.findViewById(R.id.text);
        holder.tv2 = (TextView) v.findViewById(R.id.text2);
        holder.tv1.setText(locations[position]);
        holder.tv2.setText(times[position]);

    } 
      else 
    {

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

ListView 在 Scroll 上改变数据

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