Question

Kindly bear if it is a very basic question. I tried to convert CFStringRef to NSString using __bridge, as i have enabled ARC.

mydevUUIDString = CFUUIDCreateString(NULL, peripheral.UUID);
 NSString *temp = (__bridge NSString *) devUUIDString;

I’m still getting the following error:

 Incompatible type casting 'CFStringRef' (aka 'const struct __CFString  **) to 'NSString' with _bridge cast.

Kindly advice, how to resolve this issue.

Answer 1

I think the problem is that when you create mydevUUIDString, you create it as a pointer to a CFStringRef. For example, when I enter the following code, Xcode gives me no errors:

CFStringRef mydevUUIDString = NULL;
NSString *temp = (__bridge NSString *)(mydevUUIDString); 

However, when I enter this code (which is most likely what you’ve done):

CFStringRef *mydevUUIDString = NULL;
NSString *temp = (__bridge NSString *)(mydevUUIDString);

I get the same error you get:

Incompatible type casting ‘CFStringRef’ (aka ‘const struct __CFString **) to ‘NSString’ with _bridge cast.