I have some code I am using for keychain management. The SecItemCopyMatching method returns the result in (CFTypeRef *) type called foundDict, which is passed as a reference to the SecItemCopyMatching method. Then I am using (__bridge_transfer NSData*) to bridge from the CFTypeRef* to an NSData* (into "result" variable). So I was expecting that the result variable will of course be of type NSData, because I declared it so, and used the bridge to convert CFTypeRef* to NSData*. But when I want to convert the NSData into a string using the NSString method: initWithBytes:length:encoding, I get a runtime error that tells me "[__NSCFArray bytes]: unrecognized selector set to instance.."
When I looked in the debugger in Xcode , I can see why it is complaining because the "result" variable was converted from NSData to __NSCFArray after the "bridge" statement. And since __NSCFArray is an array type it does not support a method called "bytes" and thus the runtime complains
So, I don't understand why internally this conversion is happening from NSData to __NSCFArray And most importantly, how is the proper way to convert the results returned by the "SecItemCopyMatching" which is of type CFTypeRef to NSData. The funny thing is that i am following the exact same code suggested by Apple in its keychain wrapper example at KeychainWrapper Sample code
Any thoughts?
I am attaching an image of the debugger:
