android 序列化传值

转自:http://aijiawang-126-com.iteye.com/blog/643762

 

可以查看这两篇文章： 
1，通过Serializable传递一个类对象的例子 
http://mingkg21.iteye.com/blog/438913 
2，通过Parcelable传递一个类对象的例子 
http://mingkg21.iteye.com/blog/463895 

而若需要传递多个类对象的时候就必须用Parcelable来封装类，然后将其存放在ArrayList, 
我从网上下载的一个例子该成这种情况的：可以看其代码： 

对象：

 

package cn.wizhy;

import android.os.Parcel;
import android.os.Parcelable;

public class Phone implements Parcelable{
    String type;
    String company;
    int price;
    public Phone(String t,String c,int p) {
        type=t;
        company=c;
        price=p;
    }
    public Phone() {
        // TODO Auto-generated constructor stub
    }
    public String getType() {
        return type;
    }
    public void setType(String type) {
        this.type = type;
    }
    public String getCompany() {
        return company;
    }
    public void setCompany(String company) {
        this.company = company;
    }
    public int getPrice() {
        return price;
    }
    public void setPrice(int price) {
        this.price = price;
    }
    public static final Parcelable.Creator<Phone> CREATOR = new Creator<Phone>(){

        @Override
        public Phone createFromParcel(Parcel source) {
            // TODO Auto-generated method stub
            Phone cus = new Phone();
                cus.type = source.readString();
                cus.company = source.readString();
                cus.price = source.readInt();
                return cus;
        }

        @Override
        public Phone[] newArray(int size) {
            // TODO Auto-generated method stub
            return new Phone[size];
        }

    };
    @Override
    public int describeContents() {
        // TODO Auto-generated method stub
        return 0;
    }
    @Override
    public void writeToParcel(Parcel dest, int flags) {
        // TODO Auto-generated method stub
        dest.writeString(type);
        dest.writeString(company);
        dest.writeInt(price);

    }
}

第一个Activity，构造类将其存放到Arraylist里，并通过Intent传给第二个Activity 

package cn.wizhy;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class Demo extends Activity {
    ArrayList<Phone> info = new ArrayList<Phone>();
    public Phone phone;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        insertPhone();
        Intent intent = new Intent(this,Demo2.class);
//        Bundle bundle = new Bundle();
//        bundle.putSerializable("phone", phone);

//        intent.putExtras(bundle);
        phone = new Phone("goole","G1",6000);
        info.add(phone);
        phone = new Phone("apple", "iphone3G", 5000);
        info.add(phone);
       intent.putExtra("phones", info);

        startActivity(intent);
    }
    public void insertPhone(){
        phone= new Phone("apple", "iphone3G", 5000);
    }

}

第二个Activity接受数据： 

package cn.wizhy;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;

public class Demo2 extends Activity {
    ArrayList<Phone> info = new ArrayList<Phone>();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Intent intent = getIntent();
        info =intent.getParcelableArrayListExtra("phones");
        for(int i=0;i<info.size();i++){
            System.out.println("type="+info.get(i).type+"   company="+info.get(i).company+" price"+info.get(i).price);
        }
    }
}