ListView更改滚动数据 [英] ListView Changes Data on Scroll

问题描述

我有一个 ListView ，它正确地用create创建了一个数组，但是当我滚动的时候，数据改变了，而且都是乱序的。我不知道问题出在我的 CustomListViewAdapter 或我的DetailsPage中。下面是我用来生成 textViews 的 For循环：



  if（currentObject.setTime！= null&&& currentObject.setName！= null）{
 String [] temporaryNames = currentObject.setName; 
 int totalNames =（currentObject.setTime.length / currentObject.setName.length）; （int i = 1; i  currentObject.setName = ArrayUtils.addAll（currentObject.setName，temporaryNames）; 
 
。 
 
 
 
 listView.setAdapter（new，BusRouteCustomListViewAdapter（this，currentObject.setName，currentObject.setTime））; 
  

这里是我的 customListViewAdapter ：
$ b $ pre $ @Override
public View getView（int position，View convertView，ViewGroup parent）{

持有人持有人=新持有人（）;
查看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;






解决方案

代码行

  @Override 
 public View getView（int position，View convertView，ViewGroup parent）{
 
最终持有人; 
查看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（持有人）; 
} else {
 
 holder =（Holder）v.getTag（）; 
} 
 
 holder.tv1.setText（locations [position]）; 
 holder.tv2.setText（times [position]）; 
 
 return v; 
} 
  




I have a ListView that is correctly populated with an array on create, but when I scroll, the data changes and is all out of order. I don't know wether the problem is in my CustomListViewAdapter or in my DetailsPage. Here's the For Loop that I am using to generate the textViews:

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));

and here is the code for my customListViewAdapter:

@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;
}

解决方案

You replace the code with these lines of code

    @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;
 }

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