Activity Intent 传递参数之 Parcelable

一、创建 继承 Parcelable的bean,

代码中 writeToParcel 回调方法完成序列化，

createFromParcel回调方法完成反序列化
(注释：如果bean中变量是类则该类也要继承Parcelable)

例如：

public class Person implements Parcelable {
    private Address address;
    private String name;
    private int age;
    public static final Parcelable.Creator<Person> CREATOR = new Parcelable.Creator<Person>() {

        @Override
        public Person[] newArray(int size) {
            return null;
        }

        @Override
        public Person createFromParcel(Parcel source) {
            Person result = new Person();
            result.age = source.readInt();
            result.name = source.readString();
            result.address = source.readParcelable(Address.class.getClassLoader());
            return result;
        }
    };

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

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeInt(age);
        dest.writeString(name);
        dest.writeParcelable(address, PARCELABLE_WRITE_RETURN_VALUE);
    }

    public Address getAddress() {
        return address;
    }

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

    public String getName() {
        return name;
    }

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

    public int getAge() {
        return age;
    }

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

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

二、第一个activity 发送 Parcelable对象
Person person = new Person();
person.setAge(2);

Intent intent = new Intent(this,MainActivity.class);
intent.putExtra("person",person);
this.startActivity(intent);

三、第二个activity 接收 Parcelable对象
Person person = (Person) getIntent().getParcelableExtra(
"person");