ObjC/Cocoa class for converting size to human-readable string?

Question

Is there a simple way to do something like..

[NSMagicDataConverter humanStringWithBytes:20000000]

..which would return \"19.1MB\"?

Answer 1

Starting in OS X 10.8 and iOS 6, you can use NSByteCountFormatter.

Your example would look like this:

[NSByteCountFormatter stringFromByteCount:20000000 countStyle:NSByteCountFormatterCountStyleFile];