DOM解析XML文件并添加到数据库中

//解析本地文件XML内容（放在assets下）

<?xml version="1.0" encoding="utf-8"?>
<Languages categroy="it" >
    <item id="1">
        <name>
Android
        </name>
        <ide>
Android Studio
        </ide>
    </item>
    <item id="2">
        <name>
IOS
        </name>
        <ide>
XCode
        </ide>
    </item>
</Languages>

//布局activity_main.xml

//布局layout\list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal" >

    <TextView
        android:id="@+id/id"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/ide"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</LinearLayout>

//MainActivity

package com.example.xml;

import java.io.IOException;
import java.util.ArrayList;

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

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.os.Bundle;
import android.app.Activity;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.Menu;
import android.view.View;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

   private SQLiteDatabase db;
   private String id;
   private String name;
   private String ide;
   private ListView listView;
   private ArrayList<User> ulist;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       // 找到控件
       // TextView tv_name = (TextView) findViewById(R.id.tv_name);
       listView = (ListView) findViewById(R.id.listView);
       // 调用方法
       MyHelper my = new MyHelper(this);
       db = my.getReadableDatabase();
       ulist = new ArrayList<User>();

       MyBaseadpter myadpter = new MyBaseadpter(this, ulist);

       listView.setAdapter(myadpter);

       try {
           // 得到工厂
           DocumentBuilderFactory factory = DocumentBuilderFactory
                   .newInstance();
           // 得到builder
           DocumentBuilder builder = factory.newDocumentBuilder();
           // 打开文件的目录
           Document document = builder.parse(getAssets()
                   .open("languagess.xml"));
           // 得到目录的元素
           Element element = document.getDocumentElement();

           // 获取文件的属性
           String categroy = element.getAttribute("categroy");
           // 输出
           // tv_name.append(categroy + "\n");
           // 得到子节点
           NodeList list = element.getElementsByTagName("item");

           for (int i = 0; i < list.getLength(); i++) {
               Element element2 = (Element) list.item(i);
               id = element2.getAttribute("id");
               name = element2.getElementsByTagName("name").item(0)
                       .getTextContent();
               ide = element2.getElementsByTagName("ide").item(0)
                       .getTextContent();
               // tv_name.append("id:" + id);
               // tv_name.append("name:" + name);
               // tv_name.append("ide:" + ide);
               ContentValues values = new ContentValues();
               values.put("_id", id);
               values.put("name", name);
               values.put("ide", ide);
               db.insert("t_user", null, values);
               // add();
           }
       } catch (Exception e) {
           e.printStackTrace();
       }

       cha();

   }

   private void cha() {
       Cursor cursor = db.query("t_user", null, null, null, null, null, null,
               null);
       while (cursor.moveToNext()) {
           User u = new User();

           u.setId(cursor.getString(cursor.getColumnIndex("_id")));
           u.setName(cursor.getString(cursor.getColumnIndex("name")));
           u.setIde(cursor.getString(cursor.getColumnIndex("ide")));
           ulist.add(u);

       }

   }

   private void add() {
       ContentValues values = new ContentValues();
       values.put("_id", id);
       values.put("name", name);
       values.put("ide", ide);
       db.insert("t_user", null, values);

   }

}

//适配器类MyBaseadpter

package com.example.xml;

import java.util.List;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;

public class MyBaseadpter extends BaseAdapter {

   private Context context;
   private List<User> list;

   public MyBaseadpter(Context context, List<User> list) {
       super();
       this.context = context;
       this.list = list;
   }

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

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

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

   @Override
   public View getView(int position, View convertView, ViewGroup parent) {
       View view = View.inflate(context, R.layout.list_item, null);
       TextView id = (TextView) view.findViewById(R.id.id);
       TextView name = (TextView) view.findViewById(R.id.name);
       TextView ide = (TextView) view.findViewById(R.id.ide);
       id.setText(list.get(position).getId());
       name.setText(list.get(position).getName());
       ide.setText(list.get(position).getIde());

       return view;
   }

}

//工具类MyHelper

package com.example.xml;

import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteDatabase.CursorFactory;
import android.database.sqlite.SQLiteOpenHelper;

public class MyHelper extends SQLiteOpenHelper {

   public MyHelper(Context context) {
       super(context, "xml.db3", null, 1);
   }

   @Override
   public void onCreate(SQLiteDatabase db) {

       db.execSQL("create table t_user(_id varchar(0),name varchar(0),ide varchar(0))");
   }

   @Override
   public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
       // TODO Auto-generated method stub

   }

}

//Bean包User

package com.example.xml;

public class User {
   private String id;
   private String name;
   private String ide;

   public String getId() {
       return id;
   }

   public void setId(String id) {
       this.id = id;
   }

   public String getName() {
       return name;
   }

   public void setName(String name) {
       this.name = name;
   }

   public String getIde() {
       return ide;
   }

   public void setIde(String ide) {
       this.ide = ide;
   }

   public User(String id, String name, String ide) {
       super();
       this.id = id;
       this.name = name;
       this.ide = ide;
   }

   public User() {
       super();
   }

}

DOM解析XML文件并添加到数据库中

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