XMLPuLL解析

  1 package com.bawei.day14_xmlpull;
  2
  3 import java.io.IOException;
  4 import java.io.InputStream;
  5 import java.util.ArrayList;
  6 import java.util.List;
  7
  8 import org.xmlpull.v1.XmlPullParser;
  9 import org.xmlpull.v1.XmlPullParserException;
 10
 11 import android.os.Bundle;
 12 import android.app.Activity;
 13 import android.util.Xml;
 14 import android.view.Menu;
 15 import android.widget.ArrayAdapter;
 16 import android.widget.ListView;
 17 import android.widget.TextView;
 18
 19 public class MainActivity extends Activity {
 20
 21     private ListView mStuListView;
 22     private List<Student> stus;
 23
 24     @Override
 25     protected void onCreate(Bundle savedInstanceState) {
 26         super.onCreate(savedInstanceState);
 27         setContentView(R.layout.activity_main);
 28         TextView tv=(TextView) findViewById(R.id.tv);
 29         mStuListView = (ListView) findViewById(R.id.stuList);
 30         try {
           //调用方法
 31         parseStudent(getAssets().open("persons.xml"));
 32             if (stus != null && stus.size() > 0) {
 33                 ArrayAdapter<Student> adapter = new ArrayAdapter<Student>(this,    android.R.layout.simple_list_item_1, stus);
 34                 mStuListView.setAdapter(adapter);
 35             }
 36
 37         } catch (IOException e) {
 38             // TODO Auto-generated catch block
 39             e.printStackTrace();
 40         }
 41
 42     }
 43
 44     private List<Student> parseStudent(InputStream is) {
 45         stus = new ArrayList<Student>();
            //创建pull解析器
 46         XmlPullParser parser = Xml.newPullParser();
 47         try {
               //把需要解析的数据添加到解析器中,并设置数据格式
 48             parser.setInput(is, "utf-8");
                //通过解析器触发第一次事件，并获取事件类型码
 49             int eventType = parser.getEventType();
 50             //定义用来存储标签名称的变量
 51             String tagName = "";
 52             Student stu = null;
                //判断是否解析到文档末尾，没有则循环解析
 53             while (eventType != XmlPullParser.END_DOCUMENT) {
 54                 switch (eventType) {
                    //开始解析文档
 55                 case XmlPullParser.START_DOCUMENT:
 56                     break;
                    //开始解析标签
 57                 case XmlPullParser.START_TAG:
                       //得到标签名字
 58                     tagName = parser.getName();
                       //判断正在接戏的元素标签是否是person
 59                     if ("person".equals(tagName)) {
 60                         stu = new Student();
 61                         stu.setId(Integer.valueOf(parser.getAttributeValue(0)));
 62
 63                     }
 64                     break;
                      //解析到文本
 65                 case XmlPullParser.TEXT:
                       //得到当前正在解析的文本内容
 66                     String text = parser.getText();
 67                     if (stu != null) {
                              //判断正在解析的文本内容是哪个元素节点里的
 68                         if ("name".equals(tagName)) {
 69                             stu.setName(text);
 70                         } else if ("age".equals(tagName)) {
 71                             stu.setAge(Integer.parseInt(text));
 72                         }
 73                     }
 74                     break;
                    //解析到结束标签
 75                 case XmlPullParser.END_TAG:
                        //得到正在解析的元素标签名
 76                     tagName = parser.getName();
                       //得到正在解析的元素标签名是否是person
 77                     if ("person".equals(tagName)) {
 78                         stus.add(stu);
 79                         stu = null;
 80
 81                     }
 82
 83                     tagName = "";
 84                     break;
 85
 86                 }                     //本次事件处理完毕，进入下一个节点，下一个事件
 87                 eventType = parser.next();
 88             }
 89
 90         } catch (XmlPullParserException e) {
 91             // TODO Auto-generated catch block
 92             e.printStackTrace();
 93         } catch (IOException e) {
 94             // TODO Auto-generated catch block
 95             e.printStackTrace();
 96         }finally{
 97
 98                 try {
 99                     if(is!=null){
100                     is.close();
101                     }
102                 } catch (IOException e) {
103                     // TODO Auto-generated catch block
104                     e.printStackTrace();
105                 }
106
107         }
108
109         return stus;
110     }
111
112 }

json解析

import com.google.gson.Gson;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TextView textView = (TextView) findViewById(R.id.tv);
        try {
            InputStream is=getAssets().open("newsList.json");
            int length = is.available();
            byte[] buffer=new byte[length];
            is.read(buffer);
            String jsonStr=new String(buffer,0,length);
             Gson g=new Gson();
             SuperJsonParse sjp=g.fromJson(jsonStr,SuperJsonParse.class);
             textView.setText(sjp.toString());
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

}