Introduction 介绍

注意： 本文档翻译于2018年01月24日。如果Apple在这之后更新了文档，可能出现翻译跟官方原文不匹配的情况。原文

Archives and serializations are two ways in which you can create architecture-independent byte streams of hierarchical data. Byte streams can then be written to a file or transmitted to another process, perhaps over a network. When the byte stream is decoded, the hierarchy is regenerated. Archives provide a detailed record of a collection of interrelated objects and values. Serializations record only the simple hierarchy of property-list values.

归档和序列化是您创建体系结构独立的分层数据字节流的两种方式。字节流之后可以写入文件或者传输到另一个进程，或许通过网络。当字节流被解码时，这个层次被重新生成。归档提供了一系列相关对象和值的详细记录。序列化仅记录属性列表值的简单层次。

You should read this document to learn how to create and extract archived representations of object graphs.

你应该阅读本文档以了解如何创建和提取对象图的归档表示。

Organization of This Document 本文档的组织

This programming topic contains the following articles:

本编程主题包含以下文章：

• Object Graphs introduces the concept of an object graph and discusses the two techniques for turning objects into byte streams: archives and serializations.

  对象图 引入了对象图的概念，并讨论了将对象转变为字节流的两种技术：归档和序列化。

• Archives describes the different types of archive and archiver classes

  归档 介绍了不同类型的归档和归档类。

• Creating and Extracting Archives describes how to create and extract an archive.

  创建和提取归档 介绍如何创建和提取一个归档。

• Encoding and Decoding Objects describes how to implement the methods that allow an object to be encoded in and decoded from archives.

  编码和解码对象 介绍了如何实现允许一个对象被编码到归档和从归档中解码的方法。

• Encoding and Decoding C Data Types describes how to encode and decode C data types that do not have convenience methods defined in the archive classes.

  编码和解码C数据类型 介绍了如何编码和解码 在归档类中没有定义便利方法的C数据类型。

• Forward and Backward Compatibility for Keyed Archives provides some tips on how to make your classes more compatible with previous and future versions of your classes in keyed archives.

  键控归档的向前和向后兼容 提供了一些技巧，让你的类在键控归档中与以前的和未来版本更加兼容。

• Subclassing NSCoder provides some tips on how to create your own coder classes.

  子类化NSCoder 提供了一些关于如何创建自己的编码器类的提示。

• Serializing Property Lists describes how to create and read serialized representations of a property list

  序列化属性列表 介绍了如何创建和读取一个属性列表的的序列化表示。