Android pull解析xml的实现方法

资源文件：

persons.xml

<?xml version="1.0" encoding="utf-8" standalone="yes" ?> <persons> <person id="101"> <name>jame</name> <age>18</age> </person> <person id="102"> <name>Tom</name> <age>20</age> </person> <person id="103"> <name>Jack</name> <age>16</age> </person> <person id="104"> <name>Rose</name> <age>26</age> </person> </persons>

activity布局文件

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="${relativePackage}.${activityClass}" > <TextView android:id="@+id/tv_content" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> <Button android:id="@+id/bt_read" android:layout_width="match_parent" android:layout_height="wrap_content" android:text="读取xml文件" /> </LinearLayout>

javaBean:

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

主activity:

import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.util.ArrayList; import java.util.List; import org.xmlpull.v1.XmlPullParser; import android.app.Activity; import android.os.Bundle; import android.os.Environment; import android.util.Xml; import android.view.View; import android.view.View.OnClickListener; import android.widget.TextView; public class MainActivity extends Activity implements OnClickListener { private TextView tv_content; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); tv_content = (TextView) findViewById(R.id.tv_content); findViewById(R.id.bt_read).setOnClickListener(this); } @Override public void onClick(View v) { try { if (Environment.getExternalStorageState().equals( Environment.MEDIA_MOUNTED)) { List<Person> persons = new ArrayList<Person>(); Person person = null; File sd_file = Environment.getExternalStorageDirectory(); File file = new File(sd_file, "persons.xml"); InputStream inputStream = new FileInputStream(file); // 获取xml Pull解析器 XmlPullParser pullParser = Xml.newPullParser(); // 解析文件 pullParser.setInput(inputStream, "utf-8"); // 得到事件类型（START_DOCUMENT,END_DOCUMENT,START_TAG, END_TAG, TEXT, // etc） int eventType = pullParser.getEventType(); while (eventType != XmlPullParser.END_DOCUMENT) { switch (eventType) { case XmlPullParser.START_TAG: // 获取标签的名称 String tag_name = pullParser.getName(); if ("person".equals(tag_name)) { person = new Person(); persons.add(person); // String value = pullParser.getAttributeValue(null, // "id"); String value = pullParser.getAttributeValue(0); person.setId(Integer.parseInt(value)); } else if ("name".equals(tag_name)) { // pullParser.next(); // String text = pullParser.getText(); String text = pullParser.nextText(); person.setName(text); } else if ("age".equals(tag_name)) { // pullParser.next(); // String text = pullParser.getText(); String text = pullParser.nextText(); person.setAge(Integer.parseInt(text)); } break; default: break; } eventType = pullParser.next(); } tv_content.setText(persons.toString()); } } catch (Exception e) { e.printStackTrace(); } } }

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