android-编写Parcelable对象获取java.io.NotSerializableException

概述我有一个名为Shop的类,它具有2个字段和1个静态字段.该类实现Parcelable接口：publicclassShopimplementsParcelable{privatestaticintSHOP_ID=12;privateStringname;privatelongfund;//constructorwithparcelpublicShop(Parcelparcel){

我有一个名为Shop的类,它具有2个字段和1个静态字段.该类实现Parcelable接口：

public class Shop implements Parcelable{   private static int SHOP_ID = 12;   private String name;   private long fund;   //constructor with parcel   public Shop(Parcel parcel){       name = parcel.readString();       fund = parcel.readLong();   }   //normal constructor   public Shop(Owner owner){        name = owner.getShopname();        fund = owner.getFund();    }    @OverrIDe  public int describeContents() {    return 0;  }  @OverrIDe  public voID writetoParcel(Parcel dest, int flags) {      dest.writeString(name);      dest.writeLong(fund);    }    public static final Creator<Shop> CREATOR = new Creator<Shop>(){       @OverrIDe       public Shop createFromParcel(Parcel parcel) {        //use the constructor which accept parcel        return new Shop(parcel);       }       @OverrIDe       public Shop[] newArray(int size) {        return new Shop[size];       }    };}

现在,我的代码通过使用常规构造函数启动Shop实例：

Owner owner = getownerInfo();Shop myShop = new Shop(owner); //initiate a Shop with owner

然后,我的代码将shop实例存储到AndroID的内部存储中：

String filename = "shop_file";try{  fileOutputStream fos = activity.openfileOutput(filename,Context.MODE_PRIVATE);  ObjectOutputStream oos = new ObjectOutputStream(fos);           oos.writeObject(myShop);   oos.flush();  oos.close();}catch(Exception ex){  ...}

但是当运行我的应用程序时,我得到了java.io.NotSerializableException：

06-12 13:04:29.258: W/System.err(2632): java.io.NotSerializableException: com.my.app.model.Shop06-12 13:04:29.258: W/System.err(2632):     at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1364)06-12 13:04:29.266: W/System.err(2632):     at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1671)06-12 13:04:29.266: W/System.err(2632):     at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1517)

为什么？我哪里错了？

解决方法:

从执行看来,您正在尝试序列化未实现Serializable的CartData实例：

java.io.NotSerializableException: com.my.app.model.Shop

如果要序列化,则应让Shop implemensts Serializable

从doc开始

Parcel is not a general-purpose serialization mechanism. This class
(and the corresponding Parcelable API for placing arbitrary objects
into a Parcel) is designed as a high-performance IPC transport. As
such, it is not appropriate to place any Parcel data in to persistent
storage: changes in the underlying implementation of any of the data
in the Parcel can render older data unreadable.

总结

以上是内存溢出为你收集整理的android-编写Parcelable对象获取java.io.NotSerializableException全部内容，希望文章能够帮你解决android-编写Parcelable对象获取java.io.NotSerializableException所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。