问题描述
我正在开发一个iOS应用程序，并试图压缩在应用程序中创建的文件，是否有任何内置函数能够做到这一点？
I am developing an iOS application, and trying to zip the file I have created in the application, is there any built in function able to do this?
推荐答案
正如亚历克斯指出，我回答了。该类别包括在NSData实例中处理压缩和gzip压缩数据的方法（可以从Zip文件读取或写入）。这应该是所有你需要实现文件拉链你描述，只要你可以将您的文件数据馈送到NSData实例。
As Alex pointed out, I responded to this question by pointing out the NSData category contributed by users of the Cocoadev wiki. That category includes methods for dealing with zipped and gzipped data in an NSData instance (that could be read from a Zip file or written to one). This should be all you need to implement the file zipping you describe, as long as you can feed your file data into an NSData instance.
有关此类别的示例操作，请参阅我的iPhone应用程序的源代码，。我只使用该方法从gzipped文件中提取数据（在SLSMolecule + PDB.m），但你应该能够从中获得基本概念。
For an example of this category in action, please see the source code for my iPhone application, Molecules. I only use the method to extract data from a gzipped file (in SLSMolecule+PDB.m), but you should be able to get the basic concepts from that.
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