【Android】创建、读取XML文件

创建：

package webdomain;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.StringWriter;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xmlpull.v1.XmlPullParserFactory;
import org.xmlpull.v1.XmlSerializer;

import form.FrmLogin;
import form.FrmShintai;

import android.os.Environment;
import android.util.Log;
import android.util.Xml;
import android.widget.ArrayAdapter;

public class Java2XML { 

public static void XmlFileCreator(String abc){
        File newxmlfile = new File(FrmLogin.SDCARD_PATH+"***");
        try{
            if(!newxmlfile.exists())
                newxmlfile.createNewFile();
        }catch(IOException e){
            Log.e("IOException", "exception in createNewFile() method");
        }
        //bind the new file with a FileOutputStream
        FileOutputStream fileos = null;
        try{
            fileos = new FileOutputStream(newxmlfile);
        }catch(FileNotFoundException e){
            Log.e("FileNotFoundException", "can't create FileOutputStream");
        }
        // create a XmlSerializer in order to write xml data
        XmlSerializer serializer = Xml.newSerializer();
        try {
            //we set the FileOutputStream as output for the serializer, using UTF-8 encoding
            serializer.setOutput(fileos, "UTF-8");
            //Write <?xml declaration with encoding (if encoding not null) and standalone flag (if standalone not null)
            serializer.startDocument(null, null);
            //set indentation option
            serializer.setFeature("http://xmlpull.org/v1/doc/features.html#indent-output", true);

            serializer.startTag(null, "jokes");
            serializer.startTag(null, "tag");
            serializer.startTag(null, "123");
                serializer.text(FrmS.G_Itmho.getText().toString());
                serializer.endTag(null, "123");

                serializer.startTag(null, "456");
                serializer.text(FrmS.G_Itmu.getText().toString());
                serializer.endTag(null, "456");

                serializer.startTag(null, "789");
                serializer.text(FrmSai.G_Itm.getText().toString());
                serializer.endTag(null, "789");
                serializer.endTag(null, "tag");
            serializer.endTag(null, "jokes");

            serializer.endDocument();
            serializer.flush();
            fileos.close();
        } catch (Exception e) {
            Log.e("Exception","error occurred while creating xml file");
        }
    }

}

读取：

package xmldomain;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.kobjects.util.Strings;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import android.R.string;

import form.FrmLogin;
import form.FrmShintai;

public class ReadXML {
public static  void ReadXMLs()
{
File newxmlfile = new File(FrmLogin.SDCARD_PATH+"filepath");
FileInputStream fileos = null;
try {
fileos = new FileInputStream(newxmlfile);
} catch (FileNotFoundException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
DocumentBuilderFactory docBuilderFactory = null;
DocumentBuilder docBuilder = null;
Document doc = null;
try{
docBuilderFactory =DocumentBuilderFactory.newInstance();
docBuilder =docBuilderFactory.newDocumentBuilder();
//xml file
doc = docBuilder.parse(fileos);
//root element
Element root = doc.getDocumentElement();
//Do something here
//Get a NodeList by tagname
NodeList shenchang = root.getElementsByTagName_r("123");
Node nd  = shenchang.item(0);
FrmShintai.G_ItmZenkaiShincho.setText(nd.getTextContent());
//Read Node
NodeList tizhong = root.getElementsByTagName_r("456");
Node nd1  = tizhong.item(0);
FrmShintai.G_ItmZenkaiTaiju.setText(nd1.getTextContent());
//Read Node
NodeList bmi = root.getElementsByTagName_r("789");
Node nd2  = bmi.item(0);
FrmShintai.G_ItemZenkaiBMI.setText(nd2.getTextContent());
//Read Node2
}catch(IOException e){
}catch(SAXException e){
}catch(ParserConfigurationException e){
}finally{
doc =null;
docBuilder=null;
docBuilderFactory=null;
}
}
}