安卓Parcelable序列化

   android 中自定义的对象序列化的问题有两个选择一个是Parcelable，另外一个是Serializable。

   Parcelable为Android特有的序列化方法。

   以下对person进行Parcelable序列化封装方法：

package person;


import java.util.List;


import android.R.integer;
import android.os.Parcel;
import android.os.Parcelable;
import android.os.Parcelable.Creator;


public class Person implements Parcelable {





private String id;
private String name;
private String password;
private String gender;
private List<String> interests;

public Person(Parcel source) {

id = source.readString();
name = source.readString();
password = source.readString();
gender = source.readString();
interests = source.readArrayList(List.class.getClassLoader());
}





public Person() {
}
   

public String getId() {
return id;
}


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


public String getName() {
return name;
}




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




public String getPassword() {
return password;
}




public void setPassword(String password) {
this.password = password;
}




public String getGender() {
return gender;
}




public void setGender(String gender) {
this.gender = gender;
}




public List<String> getInterests() {
return interests;
}




public void setInterests(List<String> interests) {
this.interests = interests;
}




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

         //实现Parcelable的writeToParcel方法
@Override
        public void writeToParcel(Parcel dest, int flags) {
dest.writeString(id);
dest.writeString(name);
         dest.writeString(password);
         dest.writeString(gender);
         dest.writeList(interests);
}
public static final Parcelable.Creator<Person> CREATOR = new Creator<Person>(){


@Override
public Person createFromParcel(Parcel source) {
return new Person(source);
}


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


@Override
public String toString() {
return "Person [id=" + id + ",name=" + name + ", password=" + password + ", gender="
+ gender + ", interests=" + interests + "]";
}
}

为什么要把person序列化呢？因为在activities相互交换数据的时候能够方便的传递出去。

代码如下：

Person person =new Person();
    person.setId(id);
    person.setName(name);
    person.setPassword(password);
    person.setGender(gender);
    person.setInterests(interests);
    Intent intent =new Intent();
    intent.setAction("android.intent.action.SHOW");
    intent.putExtra("person", person);
    startActivity(intent);

在接受数据和显示的时候：

        Intent intent = getIntent();
        Person person = intent.getParcelableExtra("person");

         textview1.setText("id"+ "   "+id+

        "\n姓名"+person.getName()+
        "\n密码"+person.getPassword()+
        "\n性别"+person.getGender()+
        "\n兴趣爱好"+person.getInterests());

所以数据的序列化，对于数据的传递和交换之间，有着很大的方便之处。