android取得json数据

1、android取得json数据步骤一：页面返回json数据。对本空间日志“和ajax的容易实现”的json.php代码做一些容易修改，代码如下：将代码 echo $_get'jsoallback'.'('.custom_json:encode($big_test).')'改为 echo $_get'jsoncallback'.custom_json:encode($big_test);将文件另存为jsondata.php。步骤二：编写andro代码。1.编写contact类，设置和get办法。package com.domain;

2、public class contact private sing name; private int age; private int s; private double height; private boolean is_human; private string string; public contact() public contact(string name, int age, int sex, double height, boolean is_human, string string) = name; this.age = age; this.sex =

3、sex; this.height = height; this.is_human = is_human; this.string = string; public string getname() return name;public void setname(string name) = name;public int getage() return age;public void setage(int age) this.age = age;public int getsex() return sex;public void setsex(int sex) this.s

4、ex = sex;public double getheight() return height;public void setheight(double height) this.height = height;public boolean isis_human() return is_human;public void setis_human(boolean is_human) this.is_human = is_human;public string getstring() return string;public void setstring(string string) this.

5、string = string;2.编写输入流处理工具类streamtoo。package com.shao.utils;import java.io.bytearrayoutputstream;import java.io.inputstream;public class streamtools public ic byte readinputstream(inputstream instream) throws exception bytearrayoutputstream outstream = new bytearrayoutputstream(); byte buf = new by

6、te1024; int len = 0 ; while( len = instream.read(buf) != -1) outstream.(buf, 0, len); byte data = outstream.tobytearray();/网页的二进制数据 outstream.close(); instream.close(); return data; 3.编写android布局文件main.xml。 ?xml version="1.0" encoding="utf-8"? linearlayout xms:android=" andr

7、oid:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" textview android:id="+id/name" android:layout_width="100" android:layout_height="wrap_content"/ listview android:id="+id/listview" a

8、ndroid:layout_width="fill_parent" android:layout_height="wrap_content"/ /linearlayout 新建布局文件item.xml。 ?xml version="1.0" encoding="utf-8"? linearlayout xmlns:android=" android:orientation="vertical" android:layout_width="fill_parent" a

9、ndroid:layout_height="fill_parent" textview android:id="+id/name" android:layout_width="100dip" android:layout_height="wrap_content"/ textview android:id="+id/sex" android:layout_width="100dip" android:layout_height="wrap_content"

10、/ textview android:id="+id/age" android:layout_width="100dip" android:layout_height="wrap_content"/ textview android:id="+id/height" android:layout_width="100dip" android:layout_height="wrap_content"/ textview android:id="+id/is_human&

11、quot; android:layout_width="100dip" android:layout_height="wrap_content"/ textview android:id="+id/string" android:layout_width="100dip" android:layout_height="wrap_content"/ /linearlayout 在string.xml添加如下一行： string name="error" net error /s

12、tring 4.编写业务实现类。package com.shao;import java.io.inputstream;import .httpurlconnection;import .url;import java.util.arraylist;import java.util.list;import org.json.jsonarray;import org.json.jsonobject;import com.domain.contact;import com.shao.utils.streamtools;public class myservice public static lis

13、t contact getlastcontact() throws throwable string path = "00:8080/webcontent/testjson/jsondata.php" list contact contacts = new arraylist contact url url = new url(path); httpurlconnection conn = (httpurlconnection)url.openconnection(); conn.setconnecttimeout(5*1000); con

14、n.setrequestmethod("get"); inputstream instream = conn.getinputstream(); byte data = streamtools.readinputstream(instream); string json = new string(data); jsonarray array = new jsonarray(json); for(int i=0;i array.length();i+) jsonobject item = array.getjsonobject(i); contact contact = ne

15、w contact(item.getstring("name"),item.getint("age"),item.getint("sex"),item.getdouble("height"),item.getboolean("is_human"),item.getstring("string"); contacts.a(contact); return contacts; 5.编写主activity类。package com.shao;import java.util.arr

16、aylist;import java.util.hashmap;import java.util.list;import com.domain.contact;import android.app.activity;import android.os.bundle;import android.util.log;import android.widget.listview;import android.widget.simpleadapter;import android.widget.toast;public class testxml extends activity /* call wh

17、en the activity is first created. */ override public void oncreate(bundle savedinstancestate) per.oncreate(savedinstancestate); setcontentview(r.layout.main); try list contact contacts = myservice.getlastcontact(); list hashmap string,object data = new arraylist hashmap string,object (); listview li

18、stview = (listview)viewbyid(r.id.listview); for(contact contact : contacts) hashmap string,object item = new hashmap string,object item.put("name", contact.getname(); item.put("sex",contact.getsex(); item.put("age", contact.getage(); item.put("height", contact.getheight(); item.put("