ARC and CFRelease?

Question

I\'m slightly confused. Everywhere I\'ve read, suggest that when using ARC, you still need to release core foundation objects which makes sense, ARC doesn\'t manage them. Ho

Answer 1

In generally speaking, I think you should try to comment the first CFRelease(mimeType) line, and uncomment the followed two lines: CFRelease(uti) and CFRelease(extension). You cast a toll-free bridge to input NSString and ARC will handle the release. But the uti and extension is created/copied as CFString. ARC will not know how to handle them (remember ARC is a compiler feature for NSObject), so you need to CF release them.