XCode的內存泄漏問題

Question

我接近我的項目結束，儘管它表明我的XCode分析我的項目有在該行內存泄漏後：

這裏是相關代碼的文字版：

- (void)displayPerson:(ABRecordRef)person 
{ 
    NSString* firstName = (__bridge_transfer NSString*)ABRecordCopyValue(person, kABPersonFirstNameProperty); 

    NSString *lastName = (__bridge_transfer NSString*)ABRecordCopyValue(person, kABPersonLastNameProperty); 


    NSMutableString *fullName = [NSString stringWithFormat:@"%@ %@", firstName, lastName]; 

    //NSLog(@"%@", fullName); 

    NSString* phoneNum = nil; 
    ABMultiValueRef phoneNumbers; 
    phoneNumbers = ABRecordCopyValue(person, 
                kABPersonPhoneProperty); 
    if (ABMultiValueGetCount(phoneNumbers) > 0) { 
     phoneNum = (__bridge_transfer NSString*) ABMultiValueCopyValueAtIndex(phoneNumbers, 0); 
    } else { 
     phoneNum = @"Unknown"; 
    } 

    NSLog(@"First name is %@ and last name is %@", firstName, lastName); 
    NSLog(@"Phone is %@", phoneNum); 

    phoneNum = [phoneNum stringByReplacingOccurrencesOfString:@"(" withString:@""]; 
    phoneNum = [phoneNum stringByReplacingOccurrencesOfString:@")" withString:@""]; 

任何人都可以幫我解決這個問題嗎？我不認爲這是癱瘓的，但我不想讓蘋果有理由拒絕我的應用程序從商店。謝謝。

最佳... SL

Answer 1

您正在使用__bridge_transfer無處不在，除了從ABRecordCopyValue的phoneNumbers返回值。

您需要將phoneNumbers的所有權轉讓給ARC或手動釋放內存。

UPDATE：看了這個問題後，我不確定您可以將所有權轉讓給ARC，請參閱__bridge_transfer and ABRecordCopyValue: and ARC瞭解更多詳情。

添加CFRelease(phoneNumbers)將手動釋放內存。

例如：

NSString* phoneNum = nil; 
ABMultiValueRef phoneNumbers; 
phoneNumbers = ABRecordCopyValue(person, 
               kABPersonPhoneProperty); 
if (ABMultiValueGetCount(phoneNumbers) > 0) { 
    phoneNum = (__bridge_transfer NSString*) ABMultiValueCopyValueAtIndex(phoneNumbers, 0); 
} else { 
    phoneNum = @"Unknown"; 
} 

CFRelease(phoneNumbers);