相关疑难解决方法(0)

我可以在GAE上序列化我的servlet中的List,但我不能反序列化它.我究竟做错了什么？

这是我在GAE中的视频类,它是序列化的:

package legiontube;

import java.util.Date;

import javax.jdo.annotations.IdGeneratorStrategy;
import javax.jdo.annotations.IdentityType;
import javax.jdo.annotations.PersistenceCapable;
import javax.jdo.annotations.Persistent;
import javax.jdo.annotations.PrimaryKey;

@PersistenceCapable(identityType = IdentityType.APPLICATION)
public class Video {

    @PrimaryKey
    private String id;

    @Persistent
    private String titulo;

    @Persistent
    private String descricao;

    @Persistent
    private Date date;

    public Video(){};

 public Video(String id, String titulo, String descricao, Date date) {
  //super();
  this.id = id;
  this.titulo = titulo;
  this.descricao = descricao;
  this.date = date;
 }

 public String getId() {
  return id;
 }

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

我试图存储一个arraylist onSavedInstanceState()的值并在onCreate方法中获取数组列表中的值,但它引发了一个像无法暂停活动的爱

这是我的代码

public void onSaveInstanceState(Bundle savedInstanceState) {
    savedInstanceState.putParcelable("Old", (Parcelable) profileDetails );
    super.onSaveInstanceState(savedInstanceState);
}

在我的 onCreate()

if (savedInstanceState != null) { 
    profileDetails= (ArrayList<ProfileDetails>)savedInstanceState.getParcelable("Old");
}
else {
    profileDetails = GetSearchResults();
}