Question

我正在解析XML并尝试在列表视图中传播它。

我正在使用以下代码

主要活动，

public class MainActivity extends ListActivity {

ArrayList<String> xmlList=new ArrayList<String>();
ArrayList<String> xmlList1=new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    try{
        InputStream is=getResources().openRawResource(R.raw.sample);

        DocumentBuilder builder=DocumentBuilderFactory.newInstance().newDocumentBuilder();
        Document doc=builder.parse(is, null);

        NodeList nodes=doc.getElementsByTagName("id");
        NodeList nodes1=doc.getElementsByTagName("Name");

        if(nodes!=null && nodes.getLength() >0)
        {
            xmlList.clear();
            xmlList1.clear(); 
            int len=nodes.getLength();

            for(int i=0;i<len;i++)
            {
                Node node=nodes.item(i);
                Node node1=nodes1.item(i);
                xmlList.add(node.getTextContent());
            }
        }
        }
        catch(Exception e)
        {
            Toast.makeText(getApplicationContext(), ""+e.toString(), Toast.LENGTH_LONG).show();
            e.printStackTrace();
        }

    CustomList adapter=new CustomList(MainActivity.this,xmlList,xmlList1);
    setListAdapter(adapter);

CustomList.java

public class CustomList extends ArrayAdapter<String> {

Context context;
private final ArrayList<String> mainText;
private final ArrayList<String> subText1;

public CustomList(Context context, ArrayList<String> mainText, ArrayList<String>  subText1) {
    super(context,R.layout.custumlist);
    // TODO Auto-generated constructor stub
    this.context=context;
    this.mainText=mainText;
    this.subText1=subText1;

}

@Override
public View getView(int position, View view, ViewGroup parent)
{
    LayoutInflater inflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    view=inflater.inflate(R.layout.custumlist, null);

    TextView main=(TextView)view.findViewById(R.id.mainText);
    TextView sub1=(TextView)view.findViewById(R.id.subText1);

    main.setText(mainText.toString());
    sub1.setText(subText1.toString());
    return view;
}

}

但它没有显示任何内容，也没有张贴任何日志猫。我认为在改变视图方面存在一些问题。小问题但无法找到。请帮助我。

日Thnx

Answer 1

覆盖getCount

中的CustomList方法

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

OR

从{/ 1>更改super构建函数中的CustomList调用

super(context, R.layout.custumlist);

到

super(context, R.layout.custumlist,mainText);

Answer 2

在您的CustomList中放置代码：

@Override
public int getCount() {
    // TODO Auto-generated method stub
    return mainText.size();
}

列表Arrayadapter没有显示任何内容

2 个答案: