I hve some compressed Zlib NSData that I would like to unzip or ‘inflate’

Question

Asked: June 15, 20262026-06-15T17:44:12+00:00 2026-06-15T17:44:12+00:00

I hve some compressed Zlib NSData that I would like to unzip or ‘inflate’ etc but I am getting an error on the following code

NSData* originalData = [compressedData zlibInflate];

This bit of code gives me this error

No visible @interface for 'NSData' declares the selector 'zlibInflate'

I have no idea how to fix it, I have looked around but cannot find anything… Any help would be greatly appreciated.

FILES:

These are the two files you need to add to your project and reference where you need to use them.

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Editorial Team · Answer 1 · 2026-06-15T17:44:13+00:00

Editorial Team

Import the header that declares the function zLibInflate…It is probably something like NSData+zlib.h

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