getResources().getXml()获取xml

 

获取XML文件的基本思路是，通过getResources().getXml()获的XML原始文件，得到XmlResourceParser对象，通过该对象来判断是文档的开头还是结尾，是某个标签的开始还是结尾，并通过一些获取属性的方法来遍历XML文件，从而访问XML文件的内容，下面是一个访问XML文件内容的例子，并将内容更显示在一个TextView上

 

ReadXMLTest.java

/*
 * @author hualang
 */
package org.hualang.readxml;

import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import android.app.Activity;
import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import org.hualang.readxml.R;

public class ReadXMLTest extends Activity {
    private TextView myTextView;
    private Button myButton;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       setContentView(R.layout.main);

       myTextView = (TextView)findViewById(R.id.text);
       myButton = (Button)findViewById(R.id.button);
       //设置按钮监听器
       myButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            //设置定时器
               int counter = 0;
               //实例化StringBuilder
               StringBuilder sb = new StringBuilder("");
               //得到Resources资源
               Resources r = getResources();
               //通过Resources，获得XmlResourceParser实例
               XmlResourceParser xrp = r.getXml(R.xml.test);
               try {
                   //如果没有到文件尾继续执行
                while (xrp.getEventType() != XmlResourceParser.END_DOCUMENT) {
                    //如果是开始标签
                         if (xrp.getEventType() == XmlResourceParser.START_TAG) {
                             //获取标签名称
                              String name = xrp.getName();
                              //判断标签名称是否等于friend
                              if(name.equals("friend")){
                                  counter++;
                                  //获得标签属性追加到StringBuilder中
                                  sb.append("第"+counter+"个朋友的信息："+"\n");
                                  sb.append(xrp.getAttributeValue(0)+"\n");
                                  sb.append(xrp.getAttributeValue(1)+"\n");
                                  sb.append(xrp.getAttributeValue(2)+"\n");
                                  sb.append(xrp.getAttributeValue(3)+"\n\n");
                              }
                         } else if (xrp.getEventType() == XmlPullParser.END_TAG) {
                         } else if (xrp.getEventType() == XmlPullParser.TEXT) {
                         }
                         //下一个标签
                         xrp.next();
                    }
                myTextView.setText(sb.toString());
            } catch (XmlPullParserException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    });
    }
}

/*
 * @author hualang
 */
package org.hualang.readxml;

import java.io.IOException;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import android.app.Activity;
import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import org.hualang.readxml.R;

public class ReadXMLTest extends Activity {
    private TextView myTextView;
    private Button myButton;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
       setContentView(R.layout.main);

       myTextView = (TextView)findViewById(R.id.text);
       myButton = (Button)findViewById(R.id.button);
       //设置按钮监听器
       myButton.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {
            //设置定时器
               int counter = 0;
               //实例化StringBuilder
               StringBuilder sb = new StringBuilder("");
               //得到Resources资源
               Resources r = getResources();
               //通过Resources，获得XmlResourceParser实例
               XmlResourceParser xrp = r.getXml(R.xml.test);
               try {
                   //如果没有到文件尾继续执行
                while (xrp.getEventType() != XmlResourceParser.END_DOCUMENT) {
                    //如果是开始标签
                         if (xrp.getEventType() == XmlResourceParser.START_TAG) {
                             //获取标签名称
                              String name = xrp.getName();
                              //判断标签名称是否等于friend
                              if(name.equals("friend")){
                                  counter++;
                                  //获得标签属性追加到StringBuilder中
                                  sb.append("第"+counter+"个朋友的信息："+"\n");
                                  sb.append(xrp.getAttributeValue(0)+"\n");
                                  sb.append(xrp.getAttributeValue(1)+"\n");
                                  sb.append(xrp.getAttributeValue(2)+"\n");
                                  sb.append(xrp.getAttributeValue(3)+"\n\n");
                              }
                         } else if (xrp.getEventType() == XmlPullParser.END_TAG) {
                         } else if (xrp.getEventType() == XmlPullParser.TEXT) {
                         }
                         //下一个标签
                         xrp.next();
                    }
                myTextView.setText(sb.toString());
            } catch (XmlPullParserException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    });
    }
}

 

 

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<Button
    android:id="@+id/button"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="读取XML文件内容"
/>
<TextView
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text=""
    />
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<Button
    android:id="@+id/button"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="读取XML文件内容"
/>
<TextView
    android:id="@+id/text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text=""
    />
</LinearLayout>

 

res/xml目录下的test.xml文件

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <friend name="hualang" age="22" gender="male" email="[email protected]"/>
    <friend name="nimo" age="21" gender="female" email="[email protected]"/>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <friend name="hualang" age="22" gender="male" email="[email protected]"/>
    <friend name="nimo" age="21" gender="female" email="[email protected]"/>
</resources>

 

运行结果

注意：如果没有加入import org.hualang.readxml.R;这句话，点击按钮后没有反应，原因不知道

加入import org.hualang.readxml.R;后，运行结果如下
 

 

http://blog.csdn.net/freestyleboy21/article/details/7008228