我想从放置在 assets 文件夹中的 xml 数据库中提取数据。// 一个数据库样本
<?xml version="1.0" encoding="utf-8" ?>
<Levels>
<level id ="0">
<start>3,2</start>
<one>1,1</one>
</level>
<level id ="1">
<start>3,2</start>
<one>4,1</one>
</level>
</Levels>
我希望数据拉取将通过 id 例如 id=0 返回 <start>3,2</start> <one>1,1</one>。有一个问题-我不知道该怎么做请帮助我//------------------ -------------------------------------------------- ---- 编辑：我收到错误请检查我的 xmlparser 类：
package com.example.com.worfield.barak;
import java.io.IOException;
import java.io.StringReader;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import org.apache.http.impl.client.DefaultHttpClient;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import android.content.Context;
import android.sax.Element;
import android.util.Log;
public class XMLParser
{
Context context;
public XMLParser(Context c)
{
context = c;
}
public Document getDomElement()
{
Document doc = null;
try
{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
doc = db.parse( context.getAssets().open("Level5X5Three.xml"));
}
catch(Exception ex)
{
Log.e("xml parse error", "eror in getdomelement()");
}
return doc;
}
public String getValue(Element e, String str)
{
NodeList n = ((Document) e).getElementsByTagName(str); //problem
return this.getElementValue(n.item(0));
}
public final String getElementValue( Node elem )
{
Node child;
if( elem != null){
if (elem.hasChildNodes()){
for( child = elem.getFirstChild(); child != null; child = child.getNextSibling() ){
if( child.getNodeType() == Node.TEXT_NODE ){
return child.getNodeValue();
}
}
}
}
return "";
}
}