对象在目标C中泄露

Question

当我做＆＃34;构建和分析＆＃34; XCode给了我以下警告：

存储在＆＃39;字符串＆＃39;

中的对象的潜在泄漏

- (NSString *)getUUID
{
NSString *UUID = [EA_APP_CONSTANT getUserDefaultsValueForKey:@"uniqueID"];
if (!UUID) {
    CFUUIDRef theUUID = CFUUIDCreate(NULL);
    CFStringRef string = CFUUIDCreateString(NULL, theUUID);
    CFRelease(theUUID);
    UUID = [(__bridge NSString*)string stringByReplacingOccurrencesOfString:@"-"withString:@""];
    [EA_APP_CONSTANT setUserDefaultsValue:UUID forKey:@"uniqueID"];
}
return UUID;
}

我该如何解决这个问题？

Answer 1

您需要致电CFRelease(string);

- (NSString *)getUUID
{
NSString *UUID = [EA_APP_CONSTANT getUserDefaultsValueForKey:@"uniqueID"];
if (!UUID) {
    CFUUIDRef theUUID = CFUUIDCreate(NULL);
    CFStringRef string = CFUUIDCreateString(NULL, theUUID);
    CFRelease(theUUID);
    UUID = [(__bridge NSString*)string stringByReplacingOccurrencesOfString:@"-"withString:@""];
    [EA_APP_CONSTANT setUserDefaultsValue:UUID forKey:@"uniqueID"];

    CFRelease(string);
}
return UUID;
}