Question

以下单例类（SharedManager）辅助方法可能导致保留周期。在静态分析器中获取警告：“在线路上分配的对象的潜在泄漏......”我该如何解决？

我确实尝试过使用ivar uuid __weak，但在分析时仍会出现警告。

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

由于

像在课堂上一样被召唤：

myUUID = [SharedManager generateUUID];



+ (NSString *)generateUUID
{

 CFUUIDRef uuidObject = CFUUIDCreate(kCFAllocatorDefault);
 NSString  *uuid =  (__bridge NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuidObject);
CFRelease(uuidObject);

  return uuid;

}

Answer 1

以下是释放它们的方法：

- (NSString *) uuid
{
    CFUUIDRef uuidRef = CFUUIDCreate(NULL);
    CFStringRef uuidStringRef = CFUUIDCreateString(NULL, uuidRef);
    CFRelease(uuidRef);
    NSString *uuid = [NSString stringWithString:(NSString *)
    uuidStringRef];
    CFRelease(uuidStringRef);
    return uuid;
}

_{来源：http://www.cocoabuilder.com/archive/cocoa/217665-how-to-create-guid.html}

Answer 2

NSString  *uuid =  (__bridge_transfer NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuidObject);

是否会删除警告？

修复ARC中潜在的内存泄漏

2 个答案: