修复ARC中潜在的内存泄漏

Question

以下单例类(SharedManager)帮助器方法可能会导致保留周期.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;

}

Answer 1

这是一种释放它们的方法:

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

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

Answer 2

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

这会删除警告吗？