How can we zip and unzip a file through coding?
Adnan
Take a look at this SO questions.
And here is a library ziparchive
ziparchive An Objective C class for zip/unzip on iPhone and Mac OSX
Take a look at ZipKit also.
ZipKit is an Objective-C framework for reading and writing Zip archives in Mac OS X and iOS apps, it supports:
- the standard PKZip format
- files larger than 4GB in size using PKZip's zip64 extensions
- optionally, resource forks in a manner compatible with Mac OS X's Archive Utility (in the > Mac OS X targets only)
- clean interruption, so archiving can be cancelled by the invoking object (e.g., a NSOperation or NSThread).
来源：https://stackoverflow.com/questions/5029917/zip-and-unzip-a-file-programmatically-in-ios