摘要：
1 + (NSString *)uuidString2 {3 CFUUIDRef uuid_ref = CFUUIDCreate(NULL);4 CFStringRef uuid_string_ref= CFUUIDCreateString(NULL, uuid_ref);5 NSString *uuid = [NSString stringWithString:(__bridge NSString *)uuid_string_ref];6 CFRelease(uuid_ref);7 CFRelease(uuid_string_ref);8 re... 阅读全文
