Question

我创建了一个方法来循环一个包含4个项目的文件并生成类obj 资源模板如下：

<?xml version="1.0" encoding="UTF-8"?>
<part1prayer>   
    <item> 
         <title> </title>
         <arabictext> </arabictext>
         <transliteration> </transliteration>
         <tanslanguage> </tanslanguage>
         <translation> </translation>
    </item>
</part1prayer>

由于某种原因，此方法不断返回最后一个项目[3]四次而不是item[0]，item[1]和item[2]

但是，如果我在此行 nNode = nList.item(temp); 手动传递值，即将temp替换为2，则会将项目2返回四次。

public ArrayList<PrayerDataProperties> readAssetFile2(String fileName) {

  ArrayList<PrayerDataProperties> listOfPrayers = null;

  try {
    listOfPrayers = new ArrayList<>();
    InputStream inputstream = null;
    Node nNode = null;

    DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
    DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
    inputstream = context.getAssets().open(fileName);
    Document doc = dBuilder.parse(inputstream);

    doc.getDocumentElement().normalize();

    NodeList nList = doc.getElementsByTagName(ITEM);

    for (int temp = 0; temp < nList.getLength(); temp++) {
      nNode = nList.item(temp);

      if (nNode.getNodeType() == Node.ELEMENT_NODE) {

        Element eElement = (Element) nNode;
        PrayerDataProperties prayerData = new PrayerDataProperties();
        prayerData.setArabicTxt(eElement.getElementsByTagName(ARABIC_TEXT)
            .item(0).getTextContent());
        prayerData.setTransliterationTxt(eElement
            .getElementsByTagName(TRANSLITERATION).item(0).getTextContent());
        prayerData.setTransLangTxt(eElement
            .getElementsByTagName(TRANS_LANGUAGE).item(0).getTextContent());
        prayerData.setTranslationTxt(eElement
            .getElementsByTagName(TRANSLATION).item(0).getTextContent());

        listOfPrayers.add(prayerData);
      }// End if

    }// End for

  }// End try

  catch (Exception e) {
    e.printStackTrace();
  }// End catch

  return listOfPrayers;

}// End of readAssetFile2

public class PrayerListCustomAdapter extends BaseAdapter
{
private Context context;
private ArrayList<PrayerDataProperties> listsOfPrayer;
LayoutInflater layoutInflater;
private PrayerDataProperties prayerDataProperties;

// Empty Constructor
public PrayerListCustomAdapter()
{

}// End Empty Constructor

public PrayerListCustomAdapter(Context acontext,             ArrayList<PrayerDataProperties> prayerLists)
{
    this.context = acontext;
    this.listsOfPrayer = prayerLists;
    layoutInflater = LayoutInflater.from(acontext);

}//End of Constructor

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

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

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


@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    ViewHolder holder = null;
    View customView = convertView;
    // Inflate the View if Empty
    if (customView == null)
    {
        customView = layoutInflater.inflate(R.layout.prayer_list_template,        null);
        // Attach View to View inflated and ViewGroup
        holder = new ViewHolder();
        // Instantiate Views
        holder.arabicTxt =   (TextView)customView.findViewById(R.id.tv_arabic_txt);
        holder.transliterationTxt = (TextView)customView.findViewById(R.id.tv_transliteration_txt);
        holder.transLanguageTxt = (TextView)customView.findViewById(R.id.tv_translang_txt);
        holder.translationTxt = (TextView)customView.findViewById(R.id.tv_translation_txt);

        customView.setTag(holder);

    }//End if
    else
    {
        // Call The View already Inflated
        holder = (ViewHolder)customView.getTag();
    }//End else

    // Pass Data to Each View
    prayerDataProperties = (PrayerDataProperties)getItem(position);

    holder.arabicTxt.setText(prayerDataProperties.getArabicTxt());
      holder.transliterationTxt.setText(prayerDataProperties.getTransliterationTxt());
    holder.transLanguageTxt.setText(prayerDataProperties.getTransLangTxt());
    holder.translationTxt.setText(prayerDataProperties.getTranslationTxt());

    return customView;
}//End of getView

static class ViewHolder
{
    TextView arabicTxt, transliterationTxt, translationTxt,     transLanguageTxt;
}

}// End of PrayerListCustomAdapter

Answer 1

请确保PrayerDataProperties中的字段不是静态的。如果是，则所有实例都具有相同的值，并且当您在XML中读取时它们会被覆盖。

如果这些字段确实包含static关键字，请将其删除，这样可以解决您的问题。

为什么我的for循环没有传递值？

1 个答案: