问题:

I've found a couple of libs (LiteZip and ZipArchive) that allow to unzip files on iPhone. But both of them require an input as a file. Is there a library that allows to directly unzip NSData containing zip-archived data without writing it to temporary file?
I've tried to adopt mentioned above libs for that, but with no success so far.

回答1:

In this answer to this question, I point out the CocoaDev wiki category on NSData which adds zip / unzip support to that class. This would let you do this entirely in memory.

回答2:

From what I understand, the zip format stores files separately and each stored file is compressed using a compression algorithm (generally it's the DEFLATE algorithm).

If you're only interested in uncompressing data that was compressed using the DEFLATE algorithm you could use this zlib addition to NSData from Google Toolbox For Mac
It doesn't need temporary files.