我确实尝试过使用ivar uuid __weak但是当我分析时仍会出现警告.

NSString  *__weak uuid =  (__bridge NSString *)CFUUIDCreateString(kcfAllocatorDefault,uuidObject);

谢谢

像这样在课堂上被召唤：

myUUID = [SharedManager generateUUID];
 
 
 
+ (NSString *)generateUUID
{
 
 CFUUIDRef uuidObject = CFUUIDCreate(kcfAllocatorDefault);
 NSString  *uuid =  (__bridge NSString *)CFUUIDCreateString(kcfAllocatorDefault,uuidObject);
CFRelease(uuidObject);
 
  return uuid;
 
}