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xcodecocoaautomatic-ref-counting

Xcode ARC (automatic reference counting), "release is unavailable"

For my first time using Xcode I was following a tutorial online. I did everything as the tutorial showed me, but I am afraid that it's too outdated.

The error I encounter is:

[font_attributes release];

'release' is unavailable: not available in automatic reference counting mode

ARC forbids explicit message send of 'release'

My knowledge on Cocoa and Xcode is limited, but I still wish to expand my learning.

How may I fix the ARC issue?

Solution

  • You have two options:

    1) Turn off ARC for this project. This is done by setting 'Objective-C Automatic Reference Counting' to NO in the 'Build Settings' tab of your target in the project page.

    2) Remove all retain release autorelease NSAutoReleasePools and retainCount calls, since ARC makes them for you. With the exception of NSAutoReleasePools They have been replaced by @autorelease{}.

    The second option has been automated by apple see this question to use the refactoring tool.