xml解析之XmlPullParser解析器

代码目录结构

HobInfo实体类代码

package cn.itcast.person;

import android.R.integer;

public class HobInfo {
	private int id;
	private String city;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getCity() {
		return city;
	}
	public void setCity(String city) {
		this.city = city;
	}
	public String getMessage() {
		return message;
	}
	public void setMessage(String message) {
		this.message = message;
	}
	private String message;

}

解析器实现代码

package cn.itcast.person;

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

import org.xml.sax.Parser;
import org.xmlpull.v1.XmlPullParser;

import android.R.integer;
import android.util.Xml;

public class HobSeriver {
	public static List<HobInfo>serivers( InputStream is)throws Exception{
		XmlPullParser parser=Xml.newPullParser();
		parser.setInput(is, "utf-8");
		List<HobInfo> hobInfos=null;
		HobInfo hobInfo=null;
		int type=parser.getEventType();
		while(type!=XmlPullParser.END_DOCUMENT){
			switch (type) {
			case XmlPullParser.START_TAG:
				if("infos".equals(parser.getName())){
					hobInfos=new ArrayList<HobInfo>();
					
					
				}else if("person".equals(parser.getName())){
					hobInfo=new HobInfo();
					String ids=parser.getAttributeValue(0);
					hobInfo.setId(Integer.parseInt(ids));
				}else if("city".equals(parser.getName())){
					String cString=parser.nextText();
					hobInfo.setCity(cString);
				}
				else if("message".equals(parser.getName())){
					String mString=parser.nextText();
					hobInfo.setMessage(mString);
				}
				
				break;

			case XmlPullParser.END_TAG:
				if("person".equals(parser.getName())){
					hobInfos.add(hobInfo);
					hobInfo=null;
				}
				break;
				
			}
			type=parser.next();
		}
		return hobInfos;
		
	}

}

解析器与实体类调用代码

package cn.itcast.person;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;



import android.app.Activity;
import android.os.Bundle;
import android.os.Message;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;


public class MainActivity extends Activity {
 private Map<String, String> map;
 private List<Map<String, String>> list;
 private TextView textView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button button1=(Button)findViewById(R.id.button1);
        Button button2=(Button)findViewById(R.id.button2);
        textView=(TextView)findViewById(R.id.textview);
        
        try{
        	List<HobInfo> infos=HobSeriver.serivers(MainActivity.this.getClassLoader().getResourceAsStream("person.xml"));
        	list=new ArrayList<Map<String,String>>();
        	for(HobInfo a:infos){
        		map=new HashMap<String, String>();
        		map.put("city", a.getCity());
        		map.put("message", a.getMessage());
        		list.add(map);
        	}
        	
        }catch(Exception e){
        	e.printStackTrace();
        	Toast.makeText(getApplicationContext(), "解析失败", Toast.LENGTH_SHORT);
        }
        
        
        button1.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				getMaps(0);
			}
		});
        button2.setOnClickListener(new OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				getMaps(1);
			}
		});
        
        
        
    }
    private void getMaps(Integer i){
		Map<String, String> bjmapMap=list.get(i);
		String messageString=bjmapMap.get("message");
		textView.setText(messageString);
    	
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

然后给上xml布局文件

<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"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="cn.itcast.person.MainActivity" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <TextView
            android:id="@+id/textview"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="没有选择按钮" />

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal" >

            <Button
                android:id="@+id/button1"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="天津" />
             <Button
                android:id="@+id/button2"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="北京" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

最后清单文件

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

    <uses-sdk
        android:minSdkVersion="15"
        android:targetSdkVersion="22" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="cn.itcast.person.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>

</manifest>

值得注意的是package的命名，建议类似cn.musa.dad的结构，而且如果更改包名，请注意在运行之前在更改清单文件之中的相应包名