Android 通过(Parcelable)序列化ArrayList实现Activity间传递ArrayList

需求:MainActivity跳转到TestActivity并将ArrayLis作为参数传递。

1）类Student的代码如下：

package com.example.testa;

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

public class Student implements Parcelable{
public Student(){}
public Student (int _id, String _name){
setId(_id);
setName(_name);
}
private int id;
private String name;

public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
@Override
public int describeContents() {
return 2;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(id);
dest.writeString(name);
}
public static final Parcelable.Creator<Student> CREATOR =new Creator<Student>() {
@Override
public Student createFromParcel(Parcel source){
Student student = new Student();
student.id=source.readInt();
student.name=source.readString();
return student;
}
@Override
public Student[] newArray(int size){
return new Student[size];
}

};
}

2）MainActivity跳转页面并传递参数的代码如下

/*生成参数对象*/
ArrayList<Student> items=new ArrayList<Student>();
Parcel parcel=Parcel.obtain();
Student item1=Student.CREATOR.createFromParcel(parcel);
item1.setId(1);
item1.setName("chad.cao");
items.add(item1);
Student item2=Student.CREATOR.createFromParcel(parcel);
item2.setId(2);
item2.setName("catherine.yu");
items.add(item2);
parcel.recycle();

Intent intent=new Intent(MainActivity.this, TestActivity.class);
intent.putParcelableArrayListExtra("students", items);
this.startActivity(intent);
3）TestActivity中获取参数的代码如下

Bundle bundle=this.getIntent().getExtras();
ArrayList<Student> items=bundle.getParcelableArrayList("students");