解決潛在的內存泄漏

Question

我正在分析在Xcode

//Getting memeory leak warning here "Potential leak of an object allocated and stored into 'phones' 
ABMultiValueRef phones = ABRecordCopyValue(ref, kABPersonPhoneProperty); 

//Getting potential leak error for line below 
if (ABMultiValueGetCount(ABRecordCopyValue(ref, kABPersonPhoneProperty))!=0) 
{ 
    //Getting potential leak error for line below 
    CFStringRef pNumber = ABMultiValueCopyValueAtIndex(phones,0); 
    phoneNumber = [NSString stringWithFormat:@"%@", (NSString *)pNumber]; 
    NSString *contactFirstLast = [NSString stringWithFormat: @"%@ %@", firstName, lastName]; 
} 

工具，我怎樣才能解決這些泄漏後得到以下memeory泄漏？

Answer 1

ABMultiValueRef phones = ABRecordCopyValue(ref, kABPersonPhoneProperty); 

if (ABMultiValueGetCount(phones) != 0) 
{ 
    CFStringRef pNumber = ABMultiValueCopyValueAtIndex(phones,0); 
    phoneNumber = [NSString stringWithFormat:@"%@", (NSString *)pNumber]; 
    NSString *contactFirstLast = [NSString stringWithFormat: @"%@ %@", firstName, lastName]; 
    CFRelease(pNumber); 
} 
CFRelease(phones); 

Answer 2

由於pNumber已被複制，因此需要發佈它：CFRelease(pNumber)。

您需要重做您的if條件，以便它使用phones，然後釋放phones。