Android第六个功能：XmlPullParser解析XML文件

核心代码四部分：

1、xml文件放src下面

2、实体类

3、服务类

4、测试类

5、添加测试相关代码在项目配置文件中

6、运行测试，查看结果

<?xml version="1.0" encoding="UTF-8"?>
<persons>
    <person id="1">
        <name>dcj</name>
        <age>23</age>
    </person>
    <person id="2">
        <name>lqq</name>
        <age>23</age>
    </person>
</persons>

package com.dcj.domain;

public class Person {
  private Integer id;
  private String name;
  private Integer age;
  
  public Integer getId() {
    return id;
  }
  public void setId(Integer id) {
    this.id = id;
  }
  public String getName() {
    return name;
  }
  public void setName(String name) {
    this.name = name;
  }
  public Integer getAge() {
    return age;
  }
  public void setAge(Integer age) {
    this.age = age;
  }
  @Override
  public String toString() {
    return "Person [id=" + id + ", name=" + name + ", age=" + age + "]";
  }
  
}

package com.dcj.service;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import org.xmlpull.v1.XmlPullParser;

import android.util.Xml;

import com.dcj.domain.Person;

public class PersonService {
  public static List<Person> getPersons(InputStream xml) throws Exception {
    List<Person> persons = null;
    Person person = null;
    XmlPullParser pullParser = Xml.newPullParser();
    pullParser.setInput(xml, "UTF-8");
    int event = pullParser.getEventType();
    while (event != XmlPullParser.END_DOCUMENT) {
      switch (event) {
      case XmlPullParser.START_DOCUMENT:
        persons = new ArrayList<Person>();
        break;
      case XmlPullParser.START_TAG:
        if ("person".equals(pullParser.getName())) {
          int id = new Integer(pullParser.getAttributeValue(0));
          person = new Person();
          person.setId(id);
        }
        if ("name".equals(pullParser.getName())) {
          String name = pullParser.nextText();
          person.setName(name);
        }
        if ("age".equals(pullParser.getName())) {
          int age = new Integer(pullParser.nextText());
          person.setAge(age);
        }
        break;
      case XmlPullParser.END_TAG:
        if("person".equals(pullParser.getName())) {
          persons.add(person);
          person = null;
        }
        break;
      }
      event = pullParser.next();
    }
    return persons;
  }
}

package com.dcj.test;

import java.io.InputStream;
import java.util.List;

import com.dcj.domain.Person;
import com.dcj.service.PersonService;
import android.test.AndroidTestCase;
import android.util.Log;

public class PersonServiceTest extends AndroidTestCase {

  private static final String TAG = "PersonServiceTest";
  public void testPersons() throws Exception {
    InputStream xml =this.getClass().getClassLoader().getResourceAsStream("person.xml");
    List<Person> persons = PersonService.getPersons(xml);
    for (Person person : persons) {
      Log.i(TAG, person.toString());
    }
  }
  
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.dcj"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="8" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <uses-library android:name="android.test.runner" />
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
<instrumentation
        android:name="android.test.InstrumentationTestRunner"
        android:targetPackage="com.dcj" 
        android:label="Test for my App"/>
     
</manifest>