Android中SharedPreferences和序列化结合保存对象数据

package com.example.shareddatatest;

import java.io.Serializable;

public class Person implements Serializable {
    /**
     * 
     */
    private static final long serialVersionUID = 1L;
    String name;
    int age;
    String address;
    String education;
    String tel;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getEducation() {
        return education;
    }

    public void setEducation(String education) {
        this.education = education;
    }

    public String getTel() {
        return tel;
    }

    public void setTel(String tel) {
        this.tel = tel;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    String sex;

    @Override
    public String toString() {
        return "Person [name=" + name + ", age=" + age + ", address=" + address
                + ", education=" + education + ", tel=" + tel + ", sex=" + sex
                + "]";
    }


}

package com.example.shareddatatest;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.HashMap;
import java.util.List;

import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {
    Person person = null;
    long startTime = 0l;
    long endTime = 0l;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        person = new Person();
        person.setName("LULU");
        person.setSex("bitch");
        person.setAddress("北京海淀");
        person.setAge(20);
        person.setTel("1231312");
        person.setEducation("小学");
    }

    /**
     * 序列化对象
     * 
     * @param person
     * @return
     * @throws IOException
     */
    private String serialize(Person person) throws IOException {
        startTime = System.currentTimeMillis();
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        ObjectOutputStream objectOutputStream = new ObjectOutputStream(
                byteArrayOutputStream);
        objectOutputStream.writeObject(person);
        String serStr = byteArrayOutputStream.toString("ISO-8859-1");
        serStr = java.net.URLEncoder.encode(serStr, "UTF-8");
        objectOutputStream.close();
        byteArrayOutputStream.close();
        Log.d("serial", "serialize str =" + serStr);
        endTime = System.currentTimeMillis();
        Log.d("serial", "序列化耗时为:" + (endTime - startTime));
        return serStr;
    }

    /**
     * 反序列化对象
     * 
     * @param str
     * @return
     * @throws IOException
     * @throws ClassNotFoundException
     */
    private Person deSerialization(String str) throws IOException,
            ClassNotFoundException {
        startTime = System.currentTimeMillis();
        String redStr = java.net.URLDecoder.decode(str, "UTF-8");
        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(
                redStr.getBytes("ISO-8859-1"));
        ObjectInputStream objectInputStream = new ObjectInputStream(
                byteArrayInputStream);
        Person person = (Person) objectInputStream.readObject();
        objectInputStream.close();
        byteArrayInputStream.close();
        endTime = System.currentTimeMillis();
        Log.d("serial", "反序列化耗时为:" + (endTime - startTime));
        return person;
    }

    void saveObject(String strObject) {
        SharedPreferences sp = getSharedPreferences("person", 0);
        Editor edit = sp.edit();
        edit.putString("person", strObject);
        edit.commit();
    }

    String getObject() {
        SharedPreferences sp = getSharedPreferences("person", 0);
        return sp.getString("person", null);
    }

    public void onclick(View v) {
        switch (v.getId()) {
        case R.id.button1:
            try {
                saveObject(serialize(person));
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            break;
        case R.id.button2:
            try {
                Person person = deSerialization(getObject());
                Log.d("serial", person.toString());
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            break;
        default:
            break;
        }
    }

}