Android中json操作数据的使用

Demo1

package com.activity;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.util.Date;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
/**
 * android中复杂的json数据的操作，
 * @author Administrator
 *
 */
public class JsonProjectActivity extends Activity {
 /** Called when the activity is first created. */
 private String nameData[]=new String[]{"小马哥","QQ","腾讯"};
 private int ageData[]=new int[]{30,5,7};
 private boolean isMarraiedData[]=new boolean[]{false,true,false};
 private Date brithdayData[]=new Date[]{new Date(),new Date(),new Date()};
 private double salaryData[]=new double[]{3000.0,5000.0,9000.0};
 private String companyName="北京qq";
 private String companyAddr="深圳南山科技园";
 private String companyTel="小马哥的电话13994512345";
   
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  
  JSONObject allData = new JSONObject();// 建立最外面的节点对象
  JSONArray sing = new JSONArray();// 定义数组
  for (int x = 0; x < nameData.length; x++) {// 将数组内容配置到相应的节点
   JSONObject temp = new JSONObject();// 每一个包装的数据都是jsonojbect
   try {
    temp.put("name", nameData[x]);
    temp.put("age", ageData[x]);
    temp.put("married", isMarraiedData[x]);
    temp.put("salary", salaryData[x]);
    temp.put("birthday", brithdayData[x]);
   } catch (JSONException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   sing.put(temp);// 保存多个jsonobject对象

  }
  try {
   allData.put("personData", sing);
   allData.put("company", this.companyName);
   allData.put("address", this.companyAddr);
   allData.put("telephone", this.companyTel);
  } catch (JSONException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  if (!Environment.getExternalStorageState().equals(
    Environment.MEDIA_MOUNTED)) {
   return;
  }
  File file = new File(Environment.getExternalStorageDirectory()
    + File.separator + "qqdata" + File.separator + "qq.txt");
  if (!file.getParentFile().exists()) {// 文件不存在
   file.getParentFile().mkdirs();// 创建文件夹

  }
  PrintStream outStream = null;
  try {
   outStream = new PrintStream(new FileOutputStream(file));
   outStream.print(allData.toString());// 将数据变为字符串后保存
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } finally {
   if (outStream != null) {
    outStream.close();
   }
  }
 }
}

 

 

Demo2

 

package com.activity;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.PrintStream;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
/**
 * android中json数据的操作
 * @author Administrator
 *
 */
public class JsonProjectActivity extends Activity {
 /** Called when the activity is first created. */
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  String data[] = new String[] { "www.qq.com", "yy", "QQ" };
  JSONObject allData = new JSONObject();// 建立最外面的节点对象
  JSONArray sing = new JSONArray();// 定义数组
  for (int x = 0; x < data.length; x++) {// 将数组内容配置到相应的节点
   JSONObject temp = new JSONObject();// 每一个包装的数据都是jsonojbect
   try {
    temp.put("myurl", data[x]);
   } catch (JSONException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   sing.put(temp);// 保存多个jsonobject对象

  }
  try {
   allData.put("urldata", sing);
  } catch (JSONException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }
  if (!Environment.getExternalStorageState().equals(
    Environment.MEDIA_MOUNTED)) {
   return;
  }
  File file = new File(Environment.getExternalStorageDirectory()
    + File.separator + "qqdata" + File.separator + "qq.txt");
  if (!file.getParentFile().exists()) {// 文件不存在
   file.getParentFile().mkdirs();// 创建文件夹

  }
  PrintStream outStream = null;
  try {
   outStream = new PrintStream(new FileOutputStream(file));
   outStream.print(allData.toString());// 将数据变为字符串后保存
  } catch (FileNotFoundException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } finally {
   if (outStream != null) {
    outStream.close();
   }
  }
 }
}