How to generate UUID in ios

Question

How to get a UUID in objective c, like in Java UUID is used to generate unique random numbers which represents 128 bit value.

Answer 1

+ (NSString *)uniqueFileName
{
    CFUUIDRef theUniqueString = CFUUIDCreate(NULL);
    CFStringRef string = CFUUIDCreateString(NULL, theUniqueString);
    CFRelease(theUniqueString);
    return [(NSString *)string autorelease];
}