CFAutoRelease() -like behavior on iOS6

问题:

I have a method that creates an ABRecordRef, sets its properties and returns the ref.

I'm encountering a crash when I use CFAutoRelease because I need to support iOS <7. how would I go about to properly releasing this?

-(ABRecordRef) myRecord{
 ABRecordRef newRecord = ABPersonCreate();
//some setting here
return CFAutoRelease(newRecord); //how to release here?
}

回答1:

For CoreFoundation references, I actually wouldn't release that reference in your myRecord method. Instead I would define the interface such that the caller of myRecord owns the reference and is responsible for releasing it.

回答2:

You should be able to build an own autorelease function for Core Foundation objects like this:

inline CFTypeRef MyAutorelease(CFTypeRef obj) { 
    id __autoreleasing result = CFBridgingRelease(obj); 
    return (__bridge CFTypeRef)result; 
}

With __autoreleasing, you force the object to end up in the autorelease pool.