AsyncTask、CustomBaseAdapter 和 Listview答案

【问题标题】：AsyncTask, CustomBaseAdapter and ListviewAsyncTask、CustomBaseAdapter 和 Listview
【发布时间】：2011-12-14 11:26:56
【问题描述】：

我有一个 CustomBaseAdapter 用于填充某些字段：

   public ArrayList<SearchResults> GetSearchResults(){
          ArrayList<SearchResults> results = new ArrayList<SearchResults>();

          Document doc = Jsoup.parse(kpn); 
          Elements tdsFromSecondColumn = doc.select("table.personaltable td:eq(0)");
          Elements tdsFromSecondColumn1 = doc.select("table.personaltable td:eq(1)");
          SearchResults sr1 = new SearchResults();

          for (Element tdFromSecondColumn : tdsFromSecondColumn) {                           
               sr1 = new SearchResults();
               sr1.setNaam(tdFromSecondColumn.text());
               results.add(sr1);
          }

          for (Element tdFromSecondColumn1 : tdsFromSecondColumn1) {                             
               sr1 = new SearchResults();
               sr1.setWaarde(tdFromSecondColumn1.text());
               results.add(sr1);
          }

          return results;

    }

我想在 AsyncTask 的 onPostExecute 上启动它，但我强制关闭：

@Override  
    protected void onPostExecute(String result) {  
        ListView kp = (ListView)findViewById(R.id.kpn); 

        ArrayList<SearchResults> searchResults = GetSearchResult();            
        kp.setAdapter(new MyCustomBaseAdapter(this, searchResults)); <--- think here is the error

        progress.dismiss();

    }

这个代码可能吗？如果没有应该改变什么。提前谢谢你。

【问题讨论】：

例外会有所帮助。请同时粘贴 MyCystomAdapter 的代码

标签： android arraylist android-asynctask android-listview baseadapter

【解决方案1】：

好的，我通过这样做摆脱了异常：

kp.setAdapter(new MyCustomBaseAdapter(AppName.this, searchResults));

但是JSoup的字段仍然填写不正确，首先显示所有naam字段，然后显示waarde字段。

naam:
naam:
naam:
waarde
waarde
waarde

应该是：

naam: waarde
naam: waarde

有人知道如何结合 JSoup 的 2 个 for 循环，以便正确填写字段：

       Document doc = Jsoup.parse(kpn); 
       Elements tdsFromSecondColumn = doc.select("table.personaltable td:eq(0)");
       Elements tdsFromSecondColumn1 = doc.select("table.personaltable td:eq(1)");
       SearchResults sr1 = new SearchResults();

          for (Element tdFromSecondColumn : tdsFromSecondColumn) {                           
               sr1 = new SearchResults();
               sr1.setNaam(tdFromSecondColumn.text());
               results.add(sr1);
          }

          for (Element tdFromSecondColumn1 : tdsFromSecondColumn1) {                             
               sr1 = new SearchResults();
               sr1.setWaarde(tdFromSecondColumn1.text());
               results.add(sr1);
          }

这里是我的 CustomBaseAdapter 请求：

public class MyCustomBaseAdapter extends BaseAdapter {

private static ArrayList<SearchResults> searchArrayList;

  private LayoutInflater mInflater;


 public MyCustomBaseAdapter(Context context, ArrayList<SearchResults> results) {
   searchArrayList = results;
   mInflater = LayoutInflater.from(context);
  }


public int getCount() {
   return searchArrayList.size();
  }

 public Object getItem(int position) {
   return searchArrayList.get(position);
  }

 public long getItemId(int position) {
   return position;
  }

 public View getView(int position, View convertView, ViewGroup parent) {
   ViewHolder holder;
   if (convertView == null) {
    convertView = mInflater.inflate(R.layout.test, null);
    holder = new ViewHolder();
    holder.txtNaam = (TextView) convertView.findViewById(R.id.naam);
    holder.txtWaarde = (TextView) convertView.findViewById(R.id.waarde);

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

   holder.txtNaam.setText(searchArrayList.get(position).getNaam());
   holder.txtWaarde.setText(searchArrayList.get(position).getWaarde());

  return convertView;
  }

 static class ViewHolder {
   TextView txtNaam;
   TextView txtWaarde;
  }


}

【讨论】：