AndroidParcelable接口使用方法详解

public interface Parcelable 
{
  //内容描述接口，基本不用管
  public int describeContents();
  //写入接口函数，打包
  public void writeToParcel(Parcel dest, int flags);
  //读取接口，目的是要从Parcel中构造一个实现了Parcelable的类的实例处理。因为实现类在这里还是不可知的，所以需要用到模板的方式，继承类名通过模板参数传入
  //为了能够实现模板参数的传入，这里定义Creator嵌入接口,内含两个接口函数分别返回单个和多个继承类实例
  public interface Creator 
  {
      public T createFromParcel(Parcel source);
      public T[] newArray(int size);
  }
}

public static final Parcelable.Creator CREATOR

public class MyParcelable implements Parcelable 
{
   private int mData;

   public int describeContents() 
   {
     return 0;
   }

   public void writeToParcel(Parcel out, int flags) 
   {
     out.writeInt(mData);
   }

   public static final Parcelable.Creator CREATOR = new Parcelable.Creator() 
   {
     public MyParcelable createFromParcel(Parcel in) 
     {
       return new MyParcelable(in);
     }

     public MyParcelable[] newArray(int size) 
     {
       return new MyParcelable[size];
     }
   };
   
   private MyParcelable(Parcel in) 
   {
     mData = in.readInt();
   }
 }

public class Person implements Serializable
{
  private static final long serialVersiOnUID= -7060210544600464481L;
  private String name;
  private int age;
  
  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;
  }
}

public class Book implements Parcelable
{
  private String bookName;
  private String author;
  private int publishDate;
  
  public Book()
  {
    
  }
  
  public String getBookName()
  {
    return bookName;
  }
  
  public void setBookName(String bookName)
  {
    this.bookName = bookName;
  }
  
  public String getAuthor()
  {
    return author;
  }
  
  public void setAuthor(String author)
  {
    this.author = author;
  }
  
  public int getPublishDate()
  {
    return publishDate;
  }
  
  public void setPublishDate(int publishDate)
  {
    this.publishDate = publishDate;
  }
  
  @Override
  public int describeContents()
  {
    return 0;
  }
  
  @Override
  public void writeToParcel(Parcel out, int flags)
  {
    out.writeString(bookName);
    out.writeString(author);
    out.writeInt(publishDate);
  }
  
  public static final Parcelable.Creator CREATOR = new Creator()
  {
    @Override
    public Book[] newArray(int size)
    {
      return new Book[size];
    }
    
    @Override
    public Book createFromParcel(Parcel in)
    {
      return new Book(in);
    }
  };
  
  public Book(Parcel in)
  {
    bookName = in.readString();
    author = in.readString();
    publishDate = in.readInt();
  }
}