我将成为一个支持Serializable的人。由于这些设备比几年前好得多，速度上的差异已经不那么明显了，而且还有其他更微妙的差异。更多信息请参见我的博客文章。

我的回答有点晚了，但我希望它能帮助到其他人。

在速度方面，可打包>序列化。但是，自定义Serializable是个例外。它几乎在Parcelable的范围内，甚至更快。

参考资料:https://www.geeksforgeeks.org/customized-serialization-and-deserialization-in-java/

例子:

要序列化的自定义类

class MySerialized implements Serializable { 

    String deviceAddress = "MyAndroid-04"; 

    transient String token = "AABCDS"; // sensitive information which I do not want to serialize

    private void writeObject(ObjectOutputStream oos) throws Exception {
        oos.defaultWriteObject();
        oos.writeObject("111111" + token); // Encrypted token to be serialized
    }

    private void readObject(ObjectInputStream ois) throws Exception {
        ois.defaultReadObject(); 
        token = ((String) ois.readObject()).subString(6);  // Decrypting token
    }

}

打包比使用Binder序列化快得多，因为序列化使用反射并导致许多GC。Parcelable是为了优化传递对象而设计的。

这是参考链接。 http://www.developerphil.com/parcelable-vs-serializable/

在Android中，我们不能只是将对象传递给活动。要做到这一点，对象必须实现Serializable或Parcelable接口。

可序列化的

Serializable是一个标准的Java接口。你可以实现Serializable接口并添加重写方法。这种方法的问题是使用了反射，而且它是一个缓慢的过程。此方法创建了大量临时对象，并导致大量垃圾收集。然而，Serializable接口更容易实现。

请看下面的例子(Serializable):

// MyObjects Serializable class

import java.io.Serializable;
import java.util.ArrayList;
import java.util.TreeMap;

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

public class MyObjects implements Serializable {

    private String name;
    private int age;
    public ArrayList<String> address;

    public MyObjects(String name, int age, ArrayList<String> address) {
        super();
        this.name = name;
        this.age = age;
        this.address = address;
    }

    public ArrayList<String> getAddress() {
        if (!(address == null))
            return address;
        else
            return new ArrayList<String>();
    }

    public String getName() {
        return name;
    }

    // return age
    public int getAge() {
        return age;
    }
}

// MyObjects instance
MyObjects mObjects = new MyObjects("name", "age", "Address array here");

// Passing MyObjects instance via intent
Intent mIntent = new Intent(FromActivity.this, ToActivity.class);
mIntent.putExtra("UniqueKey", mObjects);
startActivity(mIntent);

// Getting MyObjects instance
Intent mIntent = getIntent();
MyObjects workorder = (MyObjects)    mIntent.getSerializableExtra("UniqueKey");

Parcelable

Parcelable进程比Serializable快得多。原因之一是我们明确了序列化过程，而不是使用反射来推断它。出于这个目的，代码进行了大量优化，这也是合情合理的。

看看下面的例子(Parcelable):

// MyObjects Parcelable class

import java.util.ArrayList;

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

public class MyObjects implements Parcelable {

    private int age;
    private String name;
    private ArrayList<String> address;

    public MyObjects(String name, int age, ArrayList<String> address) {
        this.name = name;
        this.age = age;
        this.address = address;
    }

    public MyObjects(Parcel source) {
        age = source.readInt();
        name = source.readString();
        address = source.createStringArrayList();
    }

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

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

    public int getAge() {
        return age;
    }

    public String getName() {
        return name;
    }

    public ArrayList<String> getAddress() {
        if (!(address == null))
            return address;
        else
            return new ArrayList<String>();
    }

    public static final Creator<MyObjects> CREATOR = new Creator<MyObjects>() {
        @Override
        public MyObjects[] newArray(int size) {
            return new MyObjects[size];
        }

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

// MyObjects instance
MyObjects mObjects = new MyObjects("name", "age", "Address array here");

// Passing MyOjects instance
Intent mIntent = new Intent(FromActivity.this, ToActivity.class);
mIntent.putExtra("UniqueKey", mObjects);
startActivity(mIntent);

// Getting MyObjects instance
Intent mIntent = getIntent();
MyObjects workorder = (MyObjects) mIntent.getParcelableExtra("UniqueKey");

你可以传递Parcelable对象的ArrayList，如下所示:

// Array of MyObjects
ArrayList<MyObjects> mUsers;

// Passing MyOjects instance
Intent mIntent = new Intent(FromActivity.this, ToActivity.class);
mIntent.putParcelableArrayListExtra("UniqueKey", mUsers);
startActivity(mIntent);

// Getting MyObjects instance
Intent mIntent = getIntent();
ArrayList<MyObjects> mUsers = mIntent.getParcelableArrayList("UniqueKey");

结论

Parcelable接口比Serializable接口快 与可串行化接口相比，可打包接口需要更多的时间来实现 可序列化的接口更容易实现 可序列化接口创建了大量临时对象，并导致大量垃圾收集 Parcelable数组可以通过Intent在android中传递

如果你在android studio中使用paracelable插件，parcelable的实现可以更快。搜索Android Parcelable代码生成器

If you want to be a good citizen, take the extra time to implement Parcelable since it will perform 10 times faster and use less resources. However, in most cases, the slowness of Serializable won’t be noticeable. Feel free to use it but remember that serialization is an expensive operation so keep it to a minimum. If you are trying to pass a list with thousands of serialized objects, it is possible that the whole process will take more than a second. It can make transitions or rotation from portrait to lanscape feel very sluggish.

来源:http://www.developerphil.com/parcelable-vs-serializable/