一.基本介绍

Parcelable是Android提供的序列化接口 类似Serializable,但是使用比Serializable复杂

二.使用方法

1.创建一个类Student实现Parcelable接口
2.实现接口中describeContents、writeToParcel方法

public class Student implements Parcelable {
    private int id;
    private int age;
    private String name;

    protected Student(Parcel in) {
        this.id = in.readInt();
        this.age = in.readInt();
        this.name = in.readString();
    }

    public static final Creator<Student> CREATOR = new Creator<Student>() {
        @Override
        public Student createFromParcel(Parcel in) {
            return new Student(in);
        }

        @Override
        public Student[] newArray(int size) {
            return new Student[size];
        }
    };

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel parcel, int i) {
        //写入数据的顺序和Student读取的数据顺序要是一致的
        parcel.writeInt(id);
        parcel.writeInt(age);
        parcel.writeString(name);
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public int getAge() {
        return age;
    }

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

    public String getName() {
        return name;
    }

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

    /**
     * 这个方法不是必须的 和service进行跨进程通信 生成AIDL的时候要求有这个方法
     * @param desc
     */
    public void readFromParcel(Parcel desc) {
        this.id = desc.readInt();
        this.age = desc.readInt();
        this.name = desc.readString();
    }
}