android----pull解析方式

在Android中，常见的XML解析器分别为SAX解析器、DOM解析器和PULL解析器,其中PULL解析器小巧轻便，解析速度快，简单易用，非常适合在Android移动设备中使用，Android系统内部在解析各种XML时也是用PULL解析器，今天我来介绍一下PULL解析器

  1 package com.hb.xml;
  2 
  3 import java.io.InputStream;
  4 import java.net.HttpURLConnection;
  5 import java.net.URL;
  6 
  7 import org.xmlpull.v1.XmlPullParser;
  8 
  9 import android.app.Activity;
 10 import android.os.Bundle;
 11 import android.os.Handler;
 12 import android.os.Message;
 13 import android.util.Xml;
 14 import android.view.View;
 15 import android.widget.Button;
 16 import android.widget.EditText;
 17 import android.widget.TextView;
 18 import android.widget.Toast;
 19 
 20 public class MainActivity extends Activity {
 21     protected static final int NUMBER = 0;
 22     protected static final int LOCATION = 1;
 23     protected static final int PHONEJX = 2;
 24     protected static final int NO = 3;
 25     private Button bt_start;
 26     private TextView tv_desc;
 27     private TextView tv_number;
 28     private TextView tv_for;
 29     private String path;
 30     private XmlPullParser xml;
 31     private Handler handler=new Handler(){
 32         public void handleMessage(android.os.Message msg) {
 33             switch (msg.what) {
 34             case NUMBER:
 35                 tv_number.setText((String)msg.obj);
 36                 Toast.makeText(MainActivity.this, "测试成功", 0).show();
 37                 break;
 38             case LOCATION:
 39                 tv_for.setText((String)msg.obj);
 40                 Toast.makeText(MainActivity.this, "测试成功", 0).show();
 41                 break;
 42             case PHONEJX:
 43                 tv_desc.setText((String)msg.obj);
 44                 Toast.makeText(MainActivity.this, "测试成功", 0).show();
 45                 break;
 46             case NO:
 47                 Toast.makeText(MainActivity.this, "测试失败", 0).show();
 48                 break;
 49             }
 50         };
 51     };
 52 
 53     @Override
 54     protected void onCreate(Bundle savedInstanceState) {
 55         super.onCreate(savedInstanceState);
 56         setContentView(R.layout.activity_main);
 57         initView();
 58     }
 59 
 60     private void initView() {
 61         bt_start=(Button) findViewById(R.id.bt_start);
 62         tv_desc=(TextView) findViewById(R.id.tv_desc);
 63         tv_number=(TextView) findViewById(R.id.tv_number);
 64         tv_for=(TextView) findViewById(R.id.tv_for);
 65     }
 66     public void testtesting(View v){
 67         new Thread(){
 68 
 69             public void run() {
 70                 try {
 71                     URL url = new URL("http://192.168.1.104:8080/test.xml");
 72                     HttpURLConnection conn = (HttpURLConnection) url.openConnection();
 73                     conn.setConnectTimeout(3000);
 74                     conn.setRequestMethod("GET");
 75                     int code = conn.getResponseCode();
 76                     if(code==200){
 77 
 78                         InputStream is = conn.getInputStream();
 79                         xml = Xml.newPullParser();
 80                         xml.setInput(is, "gbk");
 81                         int type = xml.getEventType();
 82                         while (type!=XmlPullParser.END_DOCUMENT) {
 83                             if(type == XmlPullParser.START_TAG){
 84                                 if("phonenum".equals(xml.getName())){
 85                                     String phonenum=xml.nextText();
 86                                     Message msg= new Message();
 87                                     msg.what=NUMBER;
 88                                     msg.obj=phonenum;
 89                                     handler.sendMessage(msg);
 90                                 }else if("location".equals(xml.getName())){
 91                                     String location=xml.nextText();
 92                                     Message msg= new Message();
 93                                     msg.what=LOCATION;
 94                                     msg.obj=location;
 95                                     handler.sendMessage(msg);
 96                                 }else if("phoneJx".equals(xml.getName())){
 97                                     String desc=xml.nextText();
 98                                     Message msg= new Message();
 99                                     msg.what=PHONEJX;
100                                     msg.obj=desc;
101                                     handler.sendMessage(msg);
102                                 }
103                             }else{
104                                 //测试失败
105                             }
106                             type=xml.next();
107                         }
108                     }
109                 } catch (Exception e) {
110                     e.printStackTrace();
111                     Message msg= new Message();
112                     msg.what=NO;
113                     handler.sendMessage(msg);
114                 }
115             };
116         }.start();
117     }
118 }